[ Home ] [ Our Stores ] [ Our Services ] [ Jewelry ] [ Learning Center ] [ Links ] [ Contact Us ]
Tables & Charts
Diamond
Sizes : Millimeters
|
Carat Size
|
Round
MM |
Marquise
MM |
Pear
MM |
Emerald
MM |
Oval
MM |
Heart
MM |
Triangle
MM |
Approx
CZ wt |
| .005 |
1.0 |
|
|
|
|
|
|
|
| .01 |
1.3 |
|
|
|
|
|
|
|
| .015 |
1.5 |
|
|
|
|
|
|
|
| .02 |
1.7 |
|
|
|
|
|
|
|
| .025 |
1.8 |
|
|
|
|
|
|
|
| .03 |
2.0 |
|
|
|
|
|
|
|
| .035 |
2.1 |
|
|
|
|
|
|
|
| .04 |
2.2 |
|
|
|
|
|
|
|
| .05 |
2.4 |
|
|
|
|
|
|
|
| .06 |
2.5 |
|
|
|
|
|
|
|
| .07 |
2.7 |
|
|
|
|
|
|
|
| .08 |
2.8 |
|
|
|
|
|
|
|
| .09 |
2.9 |
|
|
|
|
|
|
|
| .10 |
3.0 |
4x2 |
|
|
|
|
|
|
| .11 |
3.1 |
|
|
|
|
|
|
|
| .12 |
3.2 |
|
|
|
|
|
|
|
| .14 |
3.3 |
|
|
|
|
|
|
|
| .15 |
3.4 |
|
|
|
|
|
|
|
| .16 |
3.5 |
|
|
|
|
|
|
|
| .17 |
3.6 |
|
|
|
|
|
|
|
| .18 |
3.7 |
|
|
|
|
|
|
|
| .20 |
3.8 |
|
4x2 |
|
|
|
|
|
| .22 |
3.9 |
|
|
|
|
|
|
|
| .23 |
4.0 |
|
|
|
|
|
|
|
| .25 |
4.1 |
5x2.5 |
|
5x3 |
5x3 |
4x4 |
|
|
| .30 |
4.2 |
6x3 |
5x3 |
|
|
|
|
|
| .33 |
4.4 |
|
|
|
|
|
|
|
| .38 |
4.6 |
7x3.5 |
|
|
|
|
|
|
| .40 |
4.8 |
|
|
|
|
|
|
|
| .47 |
5.0 |
|
|
|
|
|
|
|
| .50 |
5.2 |
8x4 |
6x4 |
6x4 |
6x4 |
5x5 |
4x4x4 |
.85ct. |
| .60 |
5.4 |
|
|
|
|
|
|
|
| .65 |
5.6 |
|
|
|
|
5.5x5.5 |
|
|
| .75 |
5.8 |
9x4.5 |
7x5 |
6.5x4.5 |
|
6x6 |
5x5x5 |
1.25ct. |
| .80 |
6.0 |
|
|
|
|
|
|
|
| .95 |
6.4 |
|
|
|
|
|
|
|
| 1.00 |
6.5 |
10x5 |
8x5 |
7x5 |
7x5 |
6.5x6.5 |
6x6x6 |
1.70ct. |
| 1.10 |
6.6 |
|
|
|
|
|
|
|
| 1.17 |
6.8 |
|
|
|
|
|
|
|
| 1.25 |
7.0 |
|
|
|
7.5x5.5 |
|
|
|
| 1.33 |
7.2 |
|
|
|
|
|
|
|
| 1.50 |
7.4 |
11x5.5 |
9x6 |
8x6 |
8x6 |
7x7 |
7x7x7 |
2.55ct. |
| 1.60 |
7.6 |
|
|
|
|
|
|
|
| 1.75 |
7.8 |
|
|
|
|
|
|
|
| 1.90 |
8.0 |
|
|
|
|
|
|
|
| 2.00 |
8.2 |
12x6 |
10x7 |
8.5x6.5 |
8.5x6.5 |
8x8 |
8x8x8 |
3.40ct. |
| 2.15 |
8.4 |
|
|
|
|
|
|
|
| 2.25 |
8.6 |
|
|
|
|
|
|
|
| 2.50 |
8.8 |
13x6.5 |
12x7 |
9x7 |
9x7 |
8.5x8.5 |
9x9x9 |
4.25ct. |
| 2.85 |
9.2 |
|
|
|
|
|
|
|
| 3.00 |
9.4 |
14x7 |
12x8 |
10x8 |
10x8 |
9x9 |
10x10x10 |
5.10ct. |
| 3.15 |
9.6 |
|
|
|
|
|
|
|
| 3.35 |
9.8 |
|
|
|
|
|
|
|
| 3.50 |
10.0 |
14x7.5 |
13x8 |
|
10x8.5 |
9.5x9.5 |
|
5.95ct. |
| 3.75 |
10.2 |
|
|
|
|
|
|
|
| 4.00 |
10.4 |
16x8 |
14x8 |
11x9 |
11x9 |
10x10 |
|
6.8ct. |
| 4.25 |
10.6 |
|
|
|
|
|
|
|
| 4.50 |
10.8 |
|
14.5x9 |
|
11x9.5 |
|
10.5x10.5 |
|
| 5.00 |
11.2 |
16x8.5 |
15x9 |
12x10 |
12x10 |
11x11 |
|
8.5ct. |
Melting Point of Platinum, Gold & Silver
|
PLATINUM
|
3224
|
1773
|
|
15%IRIDIUM PLAT.
|
3310
|
1821
|
|
10% IRIDIUM PLAT.
|
3250
|
1788
|
|
5% IRIDIUM PLAT.
|
3235
|
1779
|
|
RHODIUM
|
3571
|
1966
|
|
24K GOLD
|
1945
|
1063
|
|
18K YELLOW
|
1700
|
927
|
|
18K WHITE
|
1730
|
943
|
|
18K PINK
|
1655
|
902
|
|
14K YELLOW
|
1615
|
879
|
|
14K WHITE
|
1825
|
996
|
|
14K PINK
|
1715
|
935
|
|
10K YELLOW
|
1665
|
907
|
|
10K WHITE
|
1975
|
1076
|
|
10K PINK
|
1760
|
960
|
|
SILVER, PURE
|
1761
|
961
|
|
STERLING SILVER
|
1640
|
893
|
|
COIN SILVER
|
1615
|
879
|
Troy
System
Metric
Conversions to Troy System
|
1 gram |
15,4324 grains |
|
1 gram |
.642 penny weights |
| 1 gram |
.03215 troy ounce |
| 1.5517 grams |
1 pennyweight |
| 31.1048 grams |
1 troy ounce |
| 1000 grams |
1 kilogram |
| 1 kilogram |
32.15076 troy ounces |
| 1 pennyweight |
24 grains |
| 1 pennyweight |
.05 troy ounces |
| 20 pennyweight |
480 grains |
| 20 pennyweight |
1 troy ounce |
| 14.5833 troy ounces |
1 pound avoir |
| 12 troy ounces(5760 grains) |
1 troy pound |
| 16 avoid ounces(7000 grains) |
1 avoid pound |
| avoir weight x .823 |
troy weight |
Weight
Conversion Factors
| Convert From: To: |
Weight Multiplied by Factor |
|
10k to Alloy |
Wt. X .77 |
|
10k to SS |
Wt. X .88 |
| 10k to 14k |
Wt. X 1.14 |
| 10k to 18k |
Wt. X 1.30 |
| 14k to Alloy |
Wt. X .66 |
| 14k to SS |
Wt. X .77 |
| 14k to 10k |
Wt. X .88 |
| 14k to 18k |
Wt. X 1.14 |
| 14k to PT |
Wt. X 1.75 |
| 18k to 10k |
Wt. X .77 |
| 18k to 14k |
Wt. X .88 |
| 18k to PT |
Wt. X 1.42 |
| PT to 14k |
Wt. X .57 |
| PT to 18k |
Wt. X .70 |
| SS to Alloy |
Wt. X .88 |
| SS to 10k |
Wt. X 1.14 |
| SS to 14k |
Wt. X 1.30 |
| SS to 18k |
Wt. X 1.48 |
| Alloy to SS |
Wt. X 1.14 |
| Alloy to 10k |
Wt. X 1.30 |
| Alloy to 14k |
Wt. X 1.48 |
| Alloy to 18k |
Wt. X 1.69 |
| Wax to Brass |
Wt. X 8.50 |
| Wax to 14k |
Wt. X 14.0 |
| Gemstone |
Refractive Index |
Specific Gravity |
Hardness |
| Alexandrite |
1.746-1.755 |
3.73 |
8.5 |
| Amethyst |
1.544-1.553 |
2.66 |
6.5 |
| Apatite |
1.634-1.638 |
3.18 |
5 |
| Aquamarine |
1.577-1.583 |
2.67-2.84 |
7.5 to 8 |
| Black Onyx |
|
|
6.5 to 7 |
| Black Star Sapphires |
|
|
9 |
| Bloodstones |
|
|
6.5 to 7 |
| Blue Lace Agate |
|
|
6.5 to 7 |
| Blue Sapphires |
|
|
9 |
| Blue Topaz |
|
|
8 |
| Cameo (Shell) |
|
|
3 to 4 |
| Carnelian |
|
|
6.5 to 7 |
| Catseye |
|
|
7 |
| Chatham Emeralds |
|
|
7.5 to 8 |
| Chrysophrase |
|
|
6.5 to 7 |
| Citrine |
1.544-1.553 |
2.66 |
7 |
| Coral |
|
|
3 to 4 |
| Cubic Zirconia |
2.15 |
2.66 |
8.75 |
| Diamond |
2.417 |
3.52 |
10 |
| Emerald |
1.577-1.583 |
2.67-2.84 |
7.5 to 8 |
| Garnet |
1.72-1.875 |
3.30-4.18 |
6.5 to 7.5 |
| Hematite |
|
|
5.5 to 6.5 |
| Iolite |
1.53-1.55 |
2.58-2.66 |
7 to 7.5 |
| Ivory |
|
|
2 to 3 |
| Jade-Jadeite |
1.654-1.667 |
3.30-3.36 |
6.5 to 7 |
| Jade-Nephrite |
1.60-1.627 |
2.90-3.02 |
6 to 6.5 |
| Jasper |
|
|
6.5 to 7 |
| Kunzite |
1.666-1.676 |
3.18 |
6 to 7 |
| Lapis Lazuli |
1.5 |
2.40-2.90 |
5 to 6 |
| Malachite |
|
|
3.5 to 4 |
| Marcasite |
|
|
6 to 6.5 |
| Moonstone |
1.520-1.525 |
2.56-2.62 |
6 to 6.5 |
| Opal |
1.45 |
1.25-2.22 |
5.5 to 6.5 |
| Pearls-Cultured |
1.52-1.66 |
2.60-2.78 |
3 to 4 |
| Peridot |
1.654-1.690 |
3.31-3.48 |
6.5 to 7 |
| Rhodalite |
|
|
7 to 7.5 |
| Rose Quartz |
|
|
7 |
| Ruby |
1.762-1.770 |
4.00 |
9 |
| Sapphire |
1.762-1.770 |
4.00 |
9 |
| Smokey Quartz |
|
|
7 |
| Sodalite |
|
|
5 to 6 |
| Spinel |
1.718 |
3.57-3.90 |
8 |
| Tanzanite |
1.691-1.704 |
3.30 |
6.5 |
| Tigereye |
|
|
7 |
| Topaz |
1.619-1.627 |
3.53 |
8 |
| Tourmaline |
1.624-1.644 |
3.01-3.21 |
7 to 7.5 |
| Turquoise |
1.61-1.65 |
2.60-2.80 |
5.6 |
| Zircon |
1.810-1.984 |
3.93-4.73 |
6 to 6.5 |
JEWELERS