The diamond weighted 3106 carats (621 grams) and measured 4 by 2 ½ by 2 inches (10cm by 6.3 by 5 cm) Fred Wells with the diamond (Image: John Lincoln) An interesting fact is the source of the term carat.Metal. All Metal Types. Total Carat. 2.00-2.50. or Search by SKU. 2 Carat Round Diamond Engagement Ring - Viewable In 360° HD. 2 carat round diamond engagement rings are …For instance, a 2 carat marquise cut diamond has a surface area of 13.08×6.54 mm, while a trillion diamond has a surface area of 9.75×9.75 mm. On the other hand, a 2 carat Asscher cut diamond features a surface area of 7.07×7.07 mm, while the same 2 carat diamond measures 6.94×6.94 mm for princess cuts. From the data above, …Our round diamond size chart will help you convert millimeter (mm) size to carat size for round cut diamonds. Round MM Size. Round Carat Weight. 4 mm. 0.25 ct. 5.0 mm. 0.50 ct. 5.75 mm. 0.75 ct.1-carat emerald cut lab diamonds (and below) are less expensive than other popular diamond shapes of the same quality. Emerald cut lab diamond rings may make your fingers look longer and more slender. Emerald cut lab diamonds look more prominent than other shapes of the same carat weight.The weight in carats of an 8×6 mm oval diamond will be 1.071-carat, assuming a 3.6 mm depth. The exact answer will depend on the diamond depth, girdle thickness, and geometric irregularities. The exact answer will depend on the diamond depth, girdle thickness, and geometric irregularities.Which do you think would be better for a 0.5 carat diamond and are there much differences between a 4 prong and 6 prong setting for a small sized diamond? Paul Gian-March 8, 2019 at 9:28 pm. Diamond prong settings also enable more light to enter the gemstone to enhance the engagement ring’s brilliance. The prongs can also be easily …As of 2014, selling prices for commercial uncut diamonds are estimated to be around $1,850 per carat. Fine rough diamonds sell for more than $2,400 per carat. 2 Carat Diamond Rings. Our 2 carat diamond rings are a brilliant way to express your love. When choosing a 2 carat engagement ring, your ring setting is just as important as the cut. For a classic look, explore the solitaire setting, which highlights the cut of your diamond. If you’re looking to make both your cut and setting radiate, explore ... The 2-carat diamond ring price can range from $27,000 to upwards of $200,000. With such a wide price range, you can probably guess that carat alone doesn’t determine a diamond’s value. A 2.00 carat G SI2 round diamond with excellent cut, polish and symmetry will cost $40,000 (as of 10th Nov 2021). The price can go up from here to …Lab-Created 2.00 Carat F SI1 Ideal Cut round diamond. $3,100. Lab-Created 2.00 Carat E SI1 Ideal Cut round diamond. $3,300. Lab-Created 2.00 Carat D SI1 Excellent Cut round diamond. $3,600. Lab-Created 2.00 Carat G VS1 Ideal Cut round diamond. $3,670. Lab-Created 2.00 Carat F VS1 Ideal Cut round diamond.Round Diamond Size Chart (carat to mm) The following is a chart of actual Round diamond sizes (from 0.25 to 10 carats) with their corresponding face-up dimensions in millimeters (length×width). This will give you an approximate idea of how big a stone of a certain weight looks or should look.Nov 30, 2023 ... What would be a good value for a 2 Carat diamond ring? The 2 Carat diamond ring that we describe below is a great example of a good value; with ...If you are wondering how much a 2.5 ct diamond costs, there’s really no definite answer I can give you. This is because a diamond’s value is affected by a myriad of factors such as cut quality, color, clarity and fluorescence. As a general guideline, you can expect to pay between $10,000 (really low quality) to upwards of $100,000 (best ...A 2-carat diamond can cost as low as $7,000 and as high as over $60,000. The price depends on factors like diamond shape, color, clarity, and cut. A good value, good quality 2 carat diamond should cost you around $16,000 - $21,000. Here is a price chart based on an ideal cut, round 2-carat diamond:Learn how to calculate the value and price of a diamond based on the 4Cs and other factors. See actual and current prices of diamonds from 0.50 to 5.00 carats and get tips on how …Aug 17, 2022 · The following chart shows the price range of two-carat diamonds from a sample set of Ritani diamond inventory.*. The median price of these two-carat diamonds is $12,825. The high price of two-carat diamonds in this chart is $26,266, while the low price is $4,993. Data includes diamonds of all shapes, cuts, colors and clarity grades offered by ... Aug 17, 2022 · The price of a 2-carat diamond ring can vary greatly depending on its shape, cut quality, and other factors. On average, you can expect to pay anywhere from $5,000 - $60,000 or more for a 2-carat diamond. The price of your setting can range anywhere from $300 to $6,000 or more depending on the precious metal you choose, the amount of side ... As an example of the incredible value to be gained buying diamonds from Dubai Diamonds, a 2 carat, G colour, VS1 clarity, VG cut round diamond is currently for ...2.00 Carat Princess Diamond, G Color, Ideal Cut, SI2 Clarity. $14,650. Create Ring. 2 Carat Diamonds. Browse 2 carat diamonds with prices and view a 2 carat diamond on hand using our diamond search. Shop Diamonds. Platinum odessa halo. 2.20 Carat Princess Lab Diamond, J Color, Super Ideal Cut, VS2 Clarity. …Price Of 2 Carat Diamonds. On average, diamond buyers can expect to pay anywhere from $5500 to $60000 AUD for a 2-carat diamond. This will vary greatly when taking into consideration the multiple factors discussed above. For example, this 2-carat diamond ring in 18 carat rose gold (pictured below) is priced a lot higher than many of the other 2 ...Generally, prices can range from $18,000 to $50,000 and beyond. How much is a two carat diamond ring with a simple solitaire setting?Larger carat diamonds come from larger raw diamonds, which are much rarer. It’s easy to assume that a diamond would go up in price proportionally based on carat weight i.e. if a one-carat diamond is $2000, a 2-carat diamond would be $4000, a 3-carat diamond would be $8000, and so on. However, this …2.0ct. ---. cut. K. color. SI2. clarity.(Money-Saving Tips) Last Updated on July 22, 2023 by Juli "Jewels" Church. Want to know how much a 2 carat diamond costs? You're in the right place! In this … Compare prices on 2.00 to 2.99 carat diamonds from top online diamond retailers. Shop and save money on two carat and up loose natural diamonds. Free shipping available! But let’s give you a few examples to show how much the price can vary. And remember, if you want to be as clued-up as possible, feel free to have a look at our diamond buying guide. Here are a few examples taken from our 2 carat loose diamond search. Diamond ‘A’ … Get inspired by recently purchased 2 carat diamond rings. Find a design and perfect the look by choosing your own 2 carat diamond. All of our two carat diamond engagement rings have been photographed in stunning 360° so that you can see exactly what you're buying. A diamond's weight is measured in carats. The carat is subdivided into 100 equal parts called 'points.'. One point equals .01 carat or 1/100 carat. A half‐carat diamond is 50 points. A one carat diamond equals 100 points. Carat weight may be expressed in both fractions and in decimal numbers. Diamond weight fractions …Insurance is great to have, especially for an item that has high monetary and sentimental value. For an engagement ring that costs between £3000 - £4000, insurance could cost as little as £50. It all depends on how much each 2-carat diamond engagement ring is. Read our handy 2-carat diamond engagement ring insurance guide for more information.Get inspired by recently purchased 2 carat diamond rings. Find and perfect an engagement ring design with your own 2 carat diamond, all in 360° HD. 24/7 CUSTOMER SERVICE; LIFETIME WARRANTY; FREE SHIPPING; FREE 30-DAY RETURNS; ABSOLUTELY ICONIC | 30% OFF* Ends in . 0 0: 0 0: 0 0: 0 0. DAYS HRS. MIN. SEC.Carat TW stands for carat total weight. It is the combined weight of all the gemstones in a piece of jewelry. A carat is a unit of weight used to measure gemstones. A gemstone is a... A 2 Carat Lab Grown Diamond can cost anywhere between $1,000 and $34,000 depending on the 4 cs. The median price is $3,500. The median price is $3,500. How much does a 2 carat diamond weigh? Aug 17, 2022 · The following chart shows the price range of two-carat diamonds from a sample set of Ritani diamond inventory.*. The median price of these two-carat diamonds is $12,825. The high price of two-carat diamonds in this chart is $26,266, while the low price is $4,993. Data includes diamonds of all shapes, cuts, colors and clarity grades offered by ... Thus, a 0.88-ct diamond would cost $880 and a 0.89-ct diamond would cost $890. At the 0.90-ct marker, however, the price per carat will increase. Let's say it jumps to $1,200 a carat. That means the 0.90-ct stone would cost $1,080 — much more than the $890 for the 0.89-ct stone, even though the two diamonds look roughly the same size.The price of a 9 carat diamond of decent quality will fall somewhere between $20, 000 and $39, 000, taking into account all of the factors discussed above. Depending on quality, a stone as large as a carat can cost up to $55,000.(Money-Saving Tips) Last Updated on July 22, 2023 by Juli "Jewels" Church. Want to know how much a 2 carat diamond costs? You're in the right place! In this …Because a 2-carat diamond tends to be quite large, you must inspect the diamond carefully before purchasing. That's because if you compare a 1-carat diamond ...Depending on the shape and cutting style of the diamond, the physical face up view of the diamond would differ. For round cut diamonds, a 0.60 carat ideal cut diamond would be roughly 5.4mm by 5.4mm in size. Here’s how a 0.622 carat diamond would look like when worn on a US size 4.5 finger (fyi, it’s the ring I … 2 Carat Diamond Rings. Explore our collection of 2 carat diamond rings, designed with the precision and expert craftsmanship that makes Tiffany & Co. diamonds exceptional. Our 2 carat engagement rings are offered in an array of cuts to complement the beauty of each stone. Our 2 carat diamond rings are a brilliant way to express your love. For instance, a 2 carat marquise cut diamond has a surface area of 13.08×6.54 mm, while a trillion diamond has a surface area of 9.75×9.75 mm. On the other hand, a 2 carat Asscher cut diamond features a surface area of 7.07×7.07 mm, while the same 2 carat diamond measures 6.94×6.94 mm for princess cuts. From the data above, …6.46 ct. 18 x 11 mm. 8.14 ct. 18 x 12 mm. 9.35 ct. 18 x 13 mm. 10.21 ct. *Estimated carat weight and millimeter size may vary depending on the depth measurement for diamond for all shapes and sizes. Learn how to measure a diamonds size and how size co-related to diamonds carat weight.Nov 7, 2023 · The price of a 2 carat diamond ring costs on average between $8,000 and $15,000. For a 2 carat lab-grown diamond, the minimum price is $6,000 with a simple ring setting. A high-quality 2 carat diamond ring, meaning a natural earth-grown diamond with a high cut, color, and clarity grades, and an elaborate setting, can cost over $72,000. Diamond Price Calculator: How Much Are Diamonds Worth? By Mike Fried, Updated September 5, 2023. A diamond price calculator is a convenient online tool that …Conflict Free Diamonds - Conflict free diamonds come from large parts of Africa, as well as Canada and other parts of the world. Find out how to get conflict free diamonds. Adverti...So how much is a 2 carat diamond really? 2 carat diamonds cost anywhere from $8,000 – $50,000 for the loose diamond. This doesn’t include the price of the ring …Diamonds wholesale are priced on a per carat basis, and the loose diamonds prices jump at every full carat. This means buying a 2.9 carat diamond instead of a 3.1 carat can save you hundreds if not thousands. Compare the 2 carat diamond price list with the 3 carat diamond price list to see the difference in price and size.For example, the price per carat rises from 6,000 to 18,000. However, the total value of a diamond increases dramatically as its size increases. This means that a 0.50 carat diamond costs about $1500 ($0.50 x 3000 $), whereas a 2 carat diamond costs 16 times as much ($2.00 x 12000 $). The larger a diamond is, the more valuable it is.Carat simply refers to the weight of the diamond. 1 carat equals 200 milligrams, or 0.2 grams. To put it in perspective, a 1 carat diamond weighs roughly the same as a quarter of a raisin. All diamonds are priced per carat. For example, a 1/2 carat diamond may have a price of $1,400 per carat. Get inspired by recently purchased 2 carat diamond rings. Find a design and perfect the look by choosing your own 2 carat diamond. All of our two carat diamond engagement rings have been photographed in stunning 360° so that you can see exactly what you're buying. Now that we fully understand what carat means in diamonds, we can fully grasp what to expect in a 2-carat diamond. So, using measurement value, a 2-carat diamond weighs 400 milligrams (0.4 grams). To put it in a more familiar term, a 2-carat diamond would be roughly the weight of half a raisin. 0.50 carat diamond size chart. The cut quality can also affect the size of the diamond. A poorly cut 1/2 carat round diamond can have a diameter of 4.80mm while an ideal cut diamond will have a diameter of 5.10. Even though their weight and everything else may be the same, the well-cut diamond will look 5% larger.Two carat diamonds vary widely in price. The chart below should help you understand how diamond shape impacts price. H color, VS2 diamonds will appear white and eye-clean for any diamond shape, so they're a good choice for price comparison. Prices are based on Blue Nile's diamond inventory. 2021 prices are comparable to the 2019 data.Get inspired by recently purchased 2 carat diamond rings. Find and perfect an engagement ring design with your own 2 carat diamond, all in 360° HD. 24/7 CUSTOMER SERVICE; LIFETIME WARRANTY; FREE SHIPPING; FREE 30-DAY RETURNS; ABSOLUTELY ICONIC | 30% OFF* Ends in . 0 0: 0 0: 0 0: 0 0. DAYS HRS. MIN. SEC.Diamonds wholesale are priced on a per carat basis, and the loose diamonds prices jump at every full carat. This means buying a 2.9 carat diamond instead of a 3.1 carat can save you hundreds if not thousands. Compare the 2 carat diamond price list with the 3 carat diamond price list to see the difference in price and size.Among PriceScope’s vetted vendors the average 1 carat diamond price for a 2.00 K color SI2 clarity princess cut is $8,995*, while the average 2 carat diamond price for an all bells and whistles 2.00 D …Our princess cut diamond size chart shows you the millimeter (mm) size for princess cut diamonds. Princess MM Size. Princess Carat Weight. 3.25 mm. 0.25 ct. 4.5 mm. 0.50 ct. 5 mm. 0.75 ct.In short – points are fractions of a carat. When a diamond weighs 0.5 carats, it’s a 50-point diamond. Following that logic, a 100-pointer diamond refers to a 1 carat stone, 150-points means it’s a 1.5 carat stone, and so on. You’re most likely to hear this trade and wholesaler term when purchasing jewelry – especially engagement …2-Carat Diamond. Courtesy of The Clear Cut. This particular size is often the sweet spot for brides-to-be, explains Landau (at The Clear Cut, most fiancées envision something between 1.5–2.5 carats). But the biggest mistake an engagement ring shopper could make, she says, is getting bogged down by the weight.Diamonds wholesale are priced on a per carat basis, and the loose diamonds prices jump at every full carat. This means buying a 2.9 carat diamond instead of a 3.1 carat can save you hundreds if not thousands. Compare the 2 carat diamond price list with the 3 carat diamond price list to see the difference in price and size.Jul 20, 2021 ... 2-carat diamond rings can cost anywhere between $6,000+ to $50,000+. The main driver of the price is the quality of the diamond. 2-Carat ...1-carat emerald cut lab diamonds (and below) are less expensive than other popular diamond shapes of the same quality. Emerald cut lab diamond rings may make your fingers look longer and more slender. Emerald cut lab diamonds look more prominent than other shapes of the same carat weight. How much is a .25 carat diamond worth? between $275 to $440. A 0.25 Carat diamond is worth between $275 to $440.05 Sept 2017. Diamond price chart 1 carat diamond price Diamond price per gram Diamond prices 2021 Rough diamond prices 2021 Diamond price history chart 2021 Diamond price calculator 0.1 carat diamond price 2 carat diamond price Jul 20, 2021 ... 2-carat diamond rings can cost anywhere between $6,000+ to $50,000+. The main driver of the price is the quality of the diamond. 2-Carat ...The following chart shows the price range of two-carat diamonds from a sample set of Ritani diamond inventory.*. The median price of these two-carat diamonds is $12,825. The high price of two-carat diamonds in this chart is $26,266, while the low price is $4,993. Data includes diamonds of all shapes, …Dec 20, 2022 · A 2-carat diamond would cost between $10,120 and $96,800 if certified by the Gemological Institute of America. Tiffany’s 2.07 carat Round brilliant cut diamond, I color, VVS2 clarity grade is comparable to a $26,800 ring. The value of a diamond is determined by the quality of its four grades: clarity, cut, color, and hardness. Use our diamond size chart to understand the millimeter (mm) size of each diamond shape. Round MM Size. Round Carat Weight. 4 mm. 0.25 ct. 5.0 mm. 0.50 ct. 5.75 mm. 0.75 ct. 2 Carat Diamond Rings. Our 2 carat diamond rings are a brilliant way to express your love. When choosing a 2 carat engagement ring, your ring setting is just as important as the cut. For a classic look, explore the solitaire setting, which highlights the cut of your diamond. If you’re looking to make both your cut and setting radiate, explore ...For captivating brilliance, discover our range of 2 carat diamond jewellery. Shop earings, necklaces, rings, bracelets, and engagement rings featuring 2 carat diamond solitaires, and multi-stone pieces with 2 carats total weight. How much does a diamond cost? The average price of a natural diamond ranges from $1,000 for a 0.50-carat diamond to $20,000 for a 2-carat diamond. However, the truth is that the price of a diamond varies depending on its cut, clarity, color, carat, and fluorescence. Well, given that the average carat weight for a diamond ring is around 0.9 carat, yes, a 2-carat diamond is most certainly considered big. With 2-carat diamond rings, the gemstone is much more noticeable and eye-catching than rings with 1-carat diamond. In the end, you should always choose a diamond based on the wearer’s taste and style.A 2 carat diamond is considered as a large diamond, and a great carat size. 2 carats diamond rings are considered an excellent diamond size among many. Remember that the bigger the fingers, the ring size will …1456 Results ... A 2 carat diamond ring is a statement of both style and promised loyalty. Start by selecting your ideal 2 carat diamond, but not before you've ...The price for an SI1 clarity diamond depends on many additional factors, including its diamond cut, carat weight, shape and diamond color. Well-cut 1 carat round diamonds with SI1 clarity and a G-I color can range from $4,000-$5,500. You can expect the diamond price per carat to be bigger or smaller …The brighter the sparkle, the more expensive the stone will be. Half-carat diamonds are priced at $1,000 to $1,500, although lower prices may represent a lower-quality diamond. A half-carat diamond measures 5.1mm in diameter. Some diamond shapes are larger in appearance, such as the oval, pear, and marquise.As an example of the incredible value to be gained buying diamonds from Dubai Diamonds, a 2 carat, G colour, VS1 clarity, VG cut round diamond is currently for ...Use our diamond size chart to understand the millimeter (mm) size of each diamond shape. Diamond Carat Size Chart - MM to Carats - Diamond Nexus 3/15/2024, 7:29:58 AM---buildKey__9272565219__92725652192 Carat Diamond Rings. Our 2 carat diamond rings are a brilliant way to express your love. When choosing a 2 carat engagement ring, your ring setting is just as important as the cut. For a classic look, explore the solitaire setting, which highlights the cut of your diamond. If you’re looking to make both your cut and setting radiate, explore ...
For instance, a 2 carat marquise cut diamond has a surface area of 13.08×6.54 mm, while a trillion diamond has a surface area of 9.75×9.75 mm. On the other hand, a 2 carat Asscher cut diamond features a surface area of 7.07×7.07 mm, while the same 2 carat diamond measures 6.94×6.94 mm for princess cuts. From the data above, …. Fossil vs fossil outlet
Thus, a 0.88-ct diamond would cost $880 and a 0.89-ct diamond would cost $890. At the 0.90-ct marker, however, the price per carat will increase. Let's say it jumps to $1,200 a carat. That means the 0.90-ct stone would cost $1,080 — much more than the $890 for the 0.89-ct stone, even though the two diamonds look roughly the same size.Clarity. Metal. How To Save Money When Buying A 2 Carat Diamond Ring. The Best Place To Buy A 2 Carat Diamond Ring. What Does a 2-Carat Diamond Ring Look Like? 2 …Shape, color, cut, clarity, and carat all affect a final diamond price. You can spend anywhere from $5,000 to $60,000 or more on a 2 carat diamond, depending on the …Aug 21, 2023 · While we’ve discussed carat weights at length, it is also important to understand how the weight of a diamond affects the cost. As a rule of thumb, as carat weight increases, so doe s the cost of the diamond. A 2-carat diamond can run you anywhere between $1,461 and $6,011 at Clean Origin. Looking at engagement rings for that special someone? Shop the selection of 2 carat engagement rings at Peoples Jewellers today.A 2 Carat Cushion Cut Diamond can cost anywhere between $4,300 and $75,000 depending on the 4 cs. The median price is $15,300. The median price is $15,300. How much does a 2 carat diamond weigh? 2 Carat Yellow Diamond Rings. Explore our collection of 2 carat diamond rings, designed with the precision and expert craftsmanship that makes Tiffany & Co. diamonds exceptional. Our 2 carat engagement rings are offered in an array of cuts to complement the beauty of each stone. Home. Naturally black diamonds are extremely rare and can have a very high value, depending on the cut, color, clarity and carat size of the diamond. The most accurate way to learn the v... How much is a .25 carat diamond worth? between $275 to $440. A 0.25 Carat diamond is worth between $275 to $440.05 Sept 2017. Diamond price chart 1 carat diamond price Diamond price per gram Diamond prices 2021 Rough diamond prices 2021 Diamond price history chart 2021 Diamond price calculator 0.1 carat diamond price 2 carat diamond price The price of a 2 carat diamond in the UK can range from around £16,000 to over £60,000, depending on the shape, quality and where you buy it from. If you choose an online retailer like Taylor & Hart you should expect to pay around £30,000 for a 2 carat round diamond ring with excellent cut quality and good …How much is a .25 carat diamond worth? A 0.25ct diamond will be worth around $400-$600, depending on its other characteristics, such as color, clarity, cut quality, and shape. Is a 2 carat diamond considered to be big? A 2 carat diamond is quite a bit above average, and can certainly be considered a big diamond. The average diamond … But, since the reality is that 1 carat diamond prices range from $1,900 to $16,000 and 2 carat diamond prices range from $8,000 to $84,000 which is a HUGE difference so as a general rule of thumb, in today’s market, my recommendation for best value for money diamond would be G color, SI1 clarity, no fluorescence and at least very good cut ... Diamonds have long been considered a symbol of luxury and elegance. From engagement rings to anniversary gifts, these precious gemstones hold a special place in our hearts and wall... 30-Carat Diamond. $7,600,000*. 40-Carat Diamond. $8,366,500**. *In 2009, a 32-carat emerald-cut Annenberg diamond was sold for $7.6 million at a New York auction. **The latest sale of 40-carat Polar Star diamond took place in November 1980 in Geneva. At today’s exchange rate, its price would equal $8,366,500. A diamond's weight is measured in carats. The carat is subdivided into 100 equal parts called 'points.'. One point equals .01 carat or 1/100 carat. A half‐carat diamond is 50 points. A one carat diamond equals 100 points. Carat weight may be expressed in both fractions and in decimal numbers. Diamond weight fractions …Round Diamond Size Chart (carat to mm) The following is a chart of actual Round diamond sizes (from 0.25 to 10 carats) with their corresponding face-up dimensions in millimeters (length×width). This will give you an approximate idea of how big a stone of a certain weight looks or should look.Also, how much does a 2 carat diamond cost if it is purchased loose by itself? Paul Gian-May 10, 2016 at 9:39 am. This is a pretty common question I get asked about the prices and cost of buying a diamond ring locally. In general, prices in Europe are very high because of value added taxes and overheads. I believe …30-Carat Diamond. $7,600,000*. 40-Carat Diamond. $8,366,500**. *In 2009, a 32-carat emerald-cut Annenberg diamond was sold for $7.6 million at a New York auction. **The latest sale of 40-carat Polar Star diamond took place in November 1980 in Geneva. At today’s exchange rate, its price would equal $8,366,500.Looking at engagement rings for that special someone? Shop the selection of 2 carat engagement rings at Peoples Jewellers today.Princess Cut 2 Carat Diamond Rings. Explore our collection of 2 carat diamond rings, designed with the precision and expert craftsmanship that makes Tiffany & Co. diamonds exceptional. Our 2 carat engagement rings are offered in an array of cuts to complement the beauty of each stone. Home.6.46 ct. 18 x 11 mm. 8.14 ct. 18 x 12 mm. 9.35 ct. 18 x 13 mm. 10.21 ct. *Estimated carat weight and millimeter size may vary depending on the depth measurement for diamond for all shapes and sizes. Learn how to measure a diamonds size and how size co-related to diamonds carat weight..