Diamond Prices | Check & Calculate with yourself 2021

How To Calculate Diamond Price

Diamond prices in the diamond market are normally based on the diamond’s characteristics. The Rappaport diamond report, called as Rap list, is the global standard table price for diamond price.

The Basic Step To Calculate The Diamond Price With Rap List:

  1. 1. Check diamond’s shape on the Rap list (Round or Fancy shapes). Make sure you’re using the correct & updated Rap list.
  2. 2. Check the table title to get the correct diamond’s carat range.
  3. 3. Check the diamond’s color range on alphabets in row
  4. 4. Check the clarity of a diamond in columns
  5. 5. Check multiplication of step 3 and 4
  6. 6. Get the number from step 5 & times 100. For example, you get 130X100=13,000 ( This amount is in US$)
  7. 7. Get the final rate after discount percent 13000-60% = 5,200 US$
  8. 8. Multiple units with exchange rates; for instance, 5,200 X 31.10 = 161,720 Baht per Carat
  9. 9. Per carat X (multiply) the actual carat of the diamond will give you Total Amount of the diamond 161,720 x 1.01 cts = 163,337.20 Baht

Although the diamond price is standardly calculated with Rap list, however, some sellers provide a discount rate, or some diamond price could be higher than Rap list calculation, depending on the diamond characteristics and sellers.

Firstly, carats refer to the unit weight of the diamond, strongly affecting the diamond price. The higher weight of diamonds, the higher the price of diamonds.

Secondly, colours of diamonds naturally contain various shades of colours. People are normally interested in colourless diamonds, however, the more colourless a diamond looks, and the higher the diamond price they have.

Thirdly, clarity refers from flawless (FL) to imperfect (I1/ I2/ I3). Flawless diamond mainly affects the higher diamond price because it is the most attractive diamond without any scratch visible even with 10x magnification.

Lastly, cuts refer to the proportion of the diamond. The depth, width, symmetry, and facet are factors affecting the diamond price. In the cut process, maintaining the weights and beauty of diamonds makes a diamond valuable.

How To Calculate Diamond 1 Carat

In order to calculate the diamond price based on the Rapaport price, the diamond’s carat is needed to be defined.

To calculate 1 carat diamond, firstly place the diamond on the sensitive weighing scale, grams unit.

Secondly, calculate diamond carat by receiving grams unit divided by 0.2 grams. For instance, diamonds weighing 0.1 grams resemble 100 milligrams, then, divide by 0.2 grams which is equal to 0.5 carat or 50 points

Clarity Rating For 1 Carat Diamond Ring

Clarity rating of diamond is a part of 4Cs components, affecting on 1 carat diamond price.

As a rule, clarity rates mostly impact on the diamond’s price estimation. Diamond naturally comes along with blemishes more or less, depending on the diamonds themselves. Flawless diamonds are rares and invaluable than others.

The clarity rates are categorised into 5 rates from best to worst, including Internally Flawless (IF), Very Very Small Inclusion 1-2 (VVS1, VVS2), Very Small Inclusion 1-2 (VS1, VS2), Small Inclusion 1-2 (SI1, SI2), and Inclusion 1-3 (I1, I2, I3).

The GIA Clarity Charts Guides Diamond’s Clarity Into 6 Steps:

  1. 1. FL - (Flawless - No inclusions and no blemishes visible under 10x magnification)
  2. 2. IF – (Internally Flawless - No inclusions visible under 10x magnification)
  3. 3. VVS1 & VVS2 (Very, Very Slightly Included (VVS1 and VVS2) - Inclusions so slight they are difficult for a skilled grader to see under 10x magnification)
  4. 4. VS1 - VS2 (Very Slightly Included (VS1 and VS2) - Inclusions are observed with effort under 10x magnification, but can be characterized as minor)
  5. 5. SI1 - SI3 (Slightly Included (SI1 and SI2)- Inclusions are noticeable under 10x magnification)
  6. 6. I1- I3 (Included (I1, I2, and I3) - Inclusions are obvious under 10x magnification which may affect transparency and brilliance.)

How Big Is 1 Carat Diamond Ring ? (Size)

According to the ideal proportions, a 1 carat diamond approximately sized into these size chart:

  1. 1 Carat Round cut diamond average size is 6.5 mm.
  2. 1 Carat Princess cut diamond average size is 5.5 mm.
  3. 1 Carat Heart shaped diamond average is 6.5 mm.
  4. 1 Carat Oval diamond average size is 7.5 X 5.5 mm.
  5. 1 Carat Cushion cut diamond average size is 7.3 mm.
  6. 1 Carat Marquise diamond average size is 10.4 X 5.2 mm.
  7. 1 Carat Pear shaped diamond average is 8.4 X 5.6 mm.
  8. 1 Carat Emerald cut diamond average is 6.9 X 4.6 mm.
  9. 1 Carat Asscher diamond average is 5.5 mm.
  10. 1 Carat Radiant cut diamond average is 6.9 X 5.2 mm.

The diamond ring’s size depends on the diamond's cut and a person’s finger size. Since 1 carat diamond is cut differently with diverse depth and shapes, affecting the differentiation of 1 carat diamond size.

Considering based on reality there are no static values of 1 carat diamond ring size. The average scale size of 1 carat diamond shape above refers to the average numbers. Therefore, there could be bigger or smaller 1 carat diamond within alike shapes.

In conclusion, buying a 1 carat diamond ring should be knowledge-based as it is important to make a decision. Overall, you can calculate the 1 carat diamond correctly and understand the importance of the diamond’s clarity.

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