Price of Diamonds Home
Price of Diamonds
Diamond Listings
Diamond Buying Checklist
Diamond Glossary
Other Gemstones
Diamond Prices Lists and Charts
GIA and IGI Diamond Prices
Diamond Price List
Diamond Charts
Weight Categories
Carat Weight & Size Charts
Calibration Charts
Proportions of Diamonds
Appraising Diamonds
American Gem Society
European Gemological Laboratory
Gemological Institute of America
Diamond Certification Laboratory of Australia
Diamond Appraisal
Diamond Appraisers
ATGA Codes
Laboratory List
Diamond Testing
Diamond Broker
Appraisal abbreviations
Diamond Basic Information
Diamond Facts
Diamond Ring Tension Setting
DeBeers Diamonds
Diamond Formation
The 4 C's of Diamonds
Buy Diamonds
Diamond Clarity
Diamond Color
Diamond Cut
Diamond Weight
Diamond Flaws
Harmonized System Codes
Additional Information
How to Buy Loose Diamonds
Diamond Selling
Diamonds in Canada
Diamonds - How to Clean
Da Vinci Diamond Cut
Diamond Fakes
Diamond Archives
How to Sell Your Diamond
Famous Diamonds
Diamond Formation
Diamond Properties
Diamond Cutting
Diamond Substitutes
The main reason that diamonds are sold in specific calibrated sizes is that it is economically easier to produce gemstones that fit into standard settings. Custom made setting involve more labor and therefore a higher cost and expense. This should be kept in mind when buying a loose diamond or loose stones for settings. Having said that, a diamond, or any other gemstone, does not need to be exactly the right size. A professional jeweler can ensure a setting fits by modifying it slightly to accomodate the gemstone. Variations such as .1 imm for under a carat and .2 mm for over a carat can be accommodated easily.
The weights given here are a guide only. They are for diamonds cut to specific proportions. You will find that colored gems are usually cut slightly larger than diamonds. and so will weight a bit more than is shown on the charts below. The density of a gemstone also affects the weight of course with diamonds being the heaviest.
The list is very much a guide and is made available to give one an idea of the type of weights one would have for each setting.
Size in mm |
5x3 | 6x4 | 7x5 | 8x6 | 9x7 | 10x8 | 11x9 | 12x10 | 14x12 |
---|---|---|---|---|---|---|---|---|---|
Amethyst
|
.23 | .45 | .85 | 1.25 | 1.75 | 2.40 | 3.20 | 4.50 | 6.50 |
Diamond
|
.25 | .50 | .75 | 1.40 | 2.00 | 3.00 | 4.00 | 5.00 | 8.00 |
Emerald
|
.25 | .52 | .85 | 1.26 | 1.90 | 2.60 | 3.75 | 5.00 | 7.50 |
Opal
|
.16 | .28 | .47 | .78 | 1.10 | 1.65 | 2.15 | 3.00 | 4.00 |
Peridot
|
.28 | .50 | .95 | 1.35 | 2.00 | 2.50 | 3.50 | 4.00 | 6.00 |
Ruby
|
.35 | .60 | 1.06 | 1.55 | 2.20 | 3.15 | 3.80 | 6.00 | 7.25 |
Sapphire
|
.35 | .60 | 1.00 | 1.55 | 2.20 | 3.15 | 3.80 | 6.00 | 7.25 |
Topaz
|
.28 | .57 | 1.10 | 1.60 | 2.50 | 3.50 | 4.50 | 6.00 | 8.80 |
Size in mm |
2 | 3 | 4 | 5 | 6 | 6.5 | 7 | 8 | 10 |
Amethyst | .04 | .10 | .20 | .40 | .70 | 1.10 | 1.30 | 1.80 | 3.30 |
---|---|---|---|---|---|---|---|---|---|
Diamond | .03 | .10 | .23 | .47 | .80 | 1.00 | 1.25 | 1.90 | 3.50 |
Emerald | .04 | .12 | .27 | .48 | .80 | 1.26 | 1.70 | 2.50 | 6.10 |
Opal | .02 | .09 | .16 | .34 | .57 | .75 | .83 | 1.30 | 2.00 |
Peridot | .05 | .12 | .26 | .50 | .85 | 1.11 | 1.25 | 2.00 | 5.25 |
Ruby | .05 | .15 | .34 | .65 | 1.05 | 1.41 | 1.60 | 2.25 | 4.50 |
Sapphire | .05 | .15 | .34 | .65 | 1.05 | 1.41 | 1.60 | 2.25 | 4.50 |
Topaz | .04 | .11 | .30 | .56 | 1.00 | 1.36 | 1.55 | 2.50 | 5.75 |
Size in mm |
5x3 | 6x4 | 7x5 | 8x6 | 9x6 | 10x7 | 12x8 | 14x9 |
---|---|---|---|---|---|---|---|---|
Amethyst
|
.20 | .35 | .65 | .85 | 1.25 | 1.70 | 4.00 | 5.00 |
Diamond
|
.25 | .50 | .75 | 1.00 | 1.50 | 2.00 | 3.50 | 5.00 |
Emerald
|
.25 | .45 | .70 | 1.05 | 1.70 | 2.60 | 4.15 | 6.10 |
Opal
|
.13 | .22 | .35 | .50 | .70 | 1.03 | 1.40 | 2.45 |
Peridot
|
.25 | .45 | .70 | .80 | 1.10 | 1.40 | 3.40 | 4.75 |
Ruby
|
.30 | .50 | .75 | 1.00 | 1.85 | 2.50 | 4.75 | 7.90 |
Sapphire
|
.30 | .50 | .75 | 1.00 | 1.85 | 2.50 | 4.75 | 7.90 |
Topaz
|
.25 | .50 | 1.00 | 1.10 | 2.00 | 3.50 | 6.50 | 8.50 |
Size in mm |
5x3 | 6x4 | 7x5 | 8x6 | 9x7 | 10x8 | 11x9 | 12x10 | 14x12 |
---|---|---|---|---|---|---|---|---|---|
Amethyst
|
.35 | .55 | 1.10 | 1.60 | 2.25 | 2.90 | 4.20 | 5.60 | 7.25 |
Diamond
|
.25 | .50 | 1.00 | 1.50 | 3.00 | 4.00 | 5.00 | 7.80 | 8.80 |
Emerald
|
.30 | .60 | .90 | 1.80 | 2.31 | 3.15 | 4.50 | 5.25 | 5.80 |
Peridot
|
.35 | .60 | 1.00 | 1.70 | 2.25 | 3.80 | 5.25 | 6.25 | 8.80 |
Ruby
|
.55 | .75 | 1.15 | 1.60 | 2.30 | 2.75 | 4.00 | 6.25 | 9.00 |
Sapphire
|
.55 | .75 | 1.15 | 1.75 | 2.30 | 2.75 | 4.00 | 6.25 | 9.00 |
Topaz
|
.40 | .65 | 1.25 | 2.40 | 3.40 | 4.00 | 5.75 | 8.00 | 9.50 |
Size in mm |
4x2 | 5x3 | 6x3 | 7x3.5 | 8x4 | 10x5 | 12x6 | 14x7 |
---|---|---|---|---|---|---|---|---|
Amethyst
|
.10 | .15 | .20 | .34 | .48 | .90 | 1.59 | 2.45 |
Diamond
|
.12 | .18 | .25 | .37 | .50 | 1.00 | 2.00 | 3.00 |
Emerald
|
.09 | .19 | .30 | .45 | .60 | 1.40 | 1.80 | 2.80 |
Opal
|
.09 | .13 | .17 | .27 | .37 | .59 | 1.00 | 1.25 |
Peridot
|
.10 | .17 | .25 | .37 | .50 | 1.00 | 2.00 | 2.55 |
Ruby
|
.13 | .24 | .35 | .55 | .75 | 1.15 | 2.20 | 3.00 |
Sapphire
|
.13 | .24 | .35 | .55 | .75 | 1.15 | 2.20 | 3.00 |
Topaz
|
.07 | .17 | .30 | .50 | .70 | 1.20 | 2.00 | 3.40 |
Top
Copyright © 2006-2020 ALL RIGHTS RESERVED. Technical Author Services Pty Ltd.
ACN. 126 773 126. ABN 62 122 488 508 A private limited company incorporated in Victoria, Australia.
Webmaster: Technical Author Services Pty Ltd