• Hardness

  10.0.

• Occurrence

  Worldwide, most notable locations are Australia, Africa, Brazil, Russia, India and most recently, Northern Canada. Diamond is the birthstone for the month of April.

• Appearance

  The normal range of colors in diamonds run from colorless to slightly yellow or brown. "Fancy colors" are those colors outside the normal range, and are found in all colors. The most sought after are colorless, and the more intense "fancy colors", blue, pink and red. Red diamonds are among the rarest of all gemstones, only two are known to exist.

• Enhancements

  Diamond is occasionally to commonly laser drilled to improve appearance. Surface cavities or fractures are occasionally filled with a hardened surface. Colored diamonds are occasionally irradiated and/or heat treated to induce "fancy" colors.

  More information on gemstone enhancements.

• Grading

  Diamonds are graded by carat weight, color, clarity and cut. These are known as the "four C's".

  • Carat weight
  • Color
    Color is usually graded using the GIA grading scale, which ranges from "D" to "Z". "D" color diamonds are colorless, and "Y" is the darkest yellow. "Z" indicates a fancy color.
  • Clarity
    Clarity is also graded using a GIA scale.
    • F, FL : Flawless
    • IF : Internally Flawless
    • VVS1, VVS2 : Very very slightly included, inclusions are very hard to see under magnification.
    • VS1, VS2 : Very slightly included, inclusions are hard to see under magnification.
    • SI1, SI2 : Slightly included, inclusions are easy to see under magnification, may be visible without magnification.
    • I1, I2, I3 : Imperfect, inclusions are visible to the naked eye.
  • Cut
    Grading Cut is not as standardize as the other C's, but is grading according to overall finish, proportions, brilliance and general appearance of the diamond.

• Some Famous Diamonds

  • The Hope Diamond in the Smithsonian Gem & Mineral Collection.
  • Smithsonian Canary Diamond in the Smithsonian Gem & Mineral Collection.
  • The Portuguese Diamond (127.01 carats) in the Smithsonian Gem & Mineral Collection.
  • Victoria-Transvaal Diamond in the Smithsonian Gem & Mineral Collection.
  • Napolean I Diamond Necklace in the Smithsonian Gem & Mineral Collection.
  • Marie Antionette Earrings in the Smithsonian Gem & Mineral Collection.

• Black Diamond

• Item #DIA164
  	0.04 ct.
  	2.2mm Round Brilliant Cut
  	Colorless
  	Slightly Included
  	[N] Not enhanced.
  	one of a kind
  Set in a unique 14 kt. yellow gold heart shaped pendant, includes a 14 kt yellow gold chain.
  Diamond	$ 649.99

Calibrated Gemstones
Calibrated Gemstones by Shape

Specify size, shape and quality when ordering. Prices are subject to change without notice. Actual carat weight may vary from the average carat weight listed.

• VS Very slightly included, G-I color, good cut, good polish (industry VVS).
• SI Slightly included, G-I color, good cut, good polish (industry VS).

Diamond		Quality	VS	SI
Shape	Size	Avg. Weight	Price Each
Round	0.8mm	0.0025	$ 6	$ 5
	1mm	0.005	$ 11	$ 10
	1.2mm	0.0075	$ 17	$ 15
	1.3mm	0.01	$ 22	$ 19
	1.5mm	0.015	$ 32	$ 28
	1.7mm	0.02	$ 42	$ 37
	1.8mm	0.025	$ 50	$ 43
	2mm	0.03	$ 58	$ 51
	2.2mm	0.04	$ 75	$ 66
	2.4mm	0.05	$ 91	$ 80
	2.5mm	0.06	$ 105	$ 93
	2.7mm	0.07	$ 118	$ 105
	2.8mm	0.08	$ 132	$ 118
	3mm	0.10	$ 165	$ 144
	3.2mm	0.12	$ 190	$ 165
	3.4mm	0.15	$ 271	$ 235
	3.8mm	0.20	$ 398	$ 350
	4.1mm	0.25	$ 543	$ 469
	4.3mm	0.33	$ 920	$ 827
	4.5mm	0.37	$ 1,228	$ 1,073
	5mm	0.50	$ 2,548	$ 2,030
	5.5mm	0.75	$ 5,040	$ 4,442
	6mm	1.00		$ 9,730
Oval	4x3mm	0.16	$ 240	$ 229
	4.5x3.5mm	0.20	$ 374	$ 345
	5x3mm	0.27	$ 511	$ 483
	5x4mm	0.33	$ 843	$ 723
	6x4mm	0.37		$ 904
Pear	4x2.5mm	0.11	$ 183	$ 164
	4x3mm	0.14	$ 253	$ 209
	4.5x3mm	0.16	$ 281	$ 232
	5x3mm	0.21	$ 407	$ 355
	5.5x3.5mm	0.25	$ 539	$ 481
	6x4mm	0.33	$ 819	$ 759
Marquise	3x1.5mm	0.0352	$ 46	$ 38
	3.5x1.75mm	0.0505	$ 78	$ 66
	3.5x2mm	0.0605	$ 110	$ 77
	3.75x1.75mm	0.05	$ 78	$ 66
	4x2mm	0.078	$ 121	$ 103
	4.25x2.25mm	0.0927	$ 137	$ 125
	4.5x2.5mm	0.13	$ 197	$ 163
	5x2.5mm	0.15	$ 268	$ 213
	5x3mm	0.20	$ 412	$ 315
	6x3mm	0.25	$ 558	$ 437
	6x3.5mm	0.33	$ 855	$ 661
Emerald	3x2.3mm	0.10	$ 147
	3.75x2.5mm	0.16	$ 235	$ 218
	3.75x2.75mm	0.20	$ 318	$ 287
	4x3mm	0.25	$ 466	$ 375
	4.5x3mm	0.33	$ 583	$ 534
Square (Step)	1.25mm	0.015		$ 15
	1.5mm	0.025		$ 27
	1.75mm	0.0354		$ 40
	2mm	0.0506		$ 56
	2.25mm	0.071		$ 76
	2.5mm	0.0933		$ 113
	2.75mm	0.11		$ 135
	3mm	0.16		$ 209
	3.25mm	0.20		$ 272
	3.5mm	0.26		$ 372
	3.75mm	0.33		$ 511
	4mm	0.40		$ 776
	4.25mm	0.40		$ 781
	4.5mm	0.55		$ 1,286
	5mm	0.75		$ 2,484
Straight Baguette	1.25x0.5mm	0.005		$ 4
	1.25x0.75mm	0.01		$ 8
	1.25x1mm	0.0116	$ 13	$ 9
	1.5x0.75mm	0.01	$ 11	$ 8
	1.5x1mm	0.02	$ 22	$ 15
	1.5x1.25mm	0.02	$ 22	$ 15
	1.75x0.75mm	0.012	$ 13	$ 9
	1.75x1mm	0.022	$ 24	$ 11
	1.75x1.25mm	0.02	$ 22	$ 17
	1.75x1.5mm	0.03	$ 32	$ 18
	2x0.75mm	0.014	$ 17	$ 12
	2x1mm	0.02	$ 24	$ 17
	2x1.25mm	0.025	$ 30	$ 21
	2x1.5mm	0.037	$ 43	$ 23
	2x1.75mm	0.045	$ 51	$ 27
	2.25x0.75mm	0.02	$ 24	$ 17
	2.25x1mm	0.023	$ 27	$ 19
	2.25x1.25mm	0.03	$ 35	$ 24
	2.25x1.5mm	0.044	$ 50	$ 27
	2.25x1.75mm	0.0529	$ 59	$ 42
	2.5x0.75mm	0.02	$ 28	$ 19
	2.5x1mm	0.022	$ 30	$ 21
	2.5x1.25mm	0.039	$ 52	$ 25
	2.5x1.5mm	0.0435	$ 60	$ 36
	2.5x1.75mm	0.0609	$ 80	$ 42
	2.5x2mm	0.0747	$ 95	$ 43
	2.75x1mm	0.03	$ 42	$ 28
	2.75x1.25mm	0.04	$ 55	$ 28
	2.75x1.5mm	0.055	$ 73	$ 53
	2.75x1.75mm	0.0728	$ 93	$ 45
	2.75x2mm	0.08	$ 100	$ 61
	2.75x2.25mm	0.09	$ 110	$ 80
	3x1mm	0.03	$ 50	$ 34
	3x1.25mm	0.044	$ 70	$ 34
	3x1.5mm	0.06	$ 91	$ 52
	3x1.75mm	0.08	$ 114	$ 62
	3x2mm	0.09	$ 125	$ 79
	3x2.25mm	0.11	$ 142	$ 93
	3x2.5mm	0.13	$ 175	$ 109
	3.25x1mm	0.03	$ 50	$ 34
	3.25x1.25mm	0.0512	$ 80	$ 37
	3.25x1.5mm	0.067	$ 100	$ 74
	3.25x1.75mm	0.0858	$ 120	$ 65
	3.25x2mm	0.10	$ 134	$ 80
	3.25x2.25mm	0.12	$ 157	$ 113
	3.25x2.5mm	0.14	$ 182	$ 115
	3.5x1mm	0.041	$ 67	$ 33
	3.5x1.25mm	0.056	$ 87	$ 44
	3.5x1.5mm	0.06	$ 99	$ 73
	3.5x1.75mm	0.0936	$ 130	$ 79
	3.5x2mm	0.082	$ 159	$ 95
	3.5x2.25mm	0.13	$ 177	$ 130
	3.5x2.5mm	0.15	$ 200	$ 126
	3.75x1mm	0.0383	$ 63	$ 34
	3.75x1.25mm	0.0572	$ 89	$ 50
	3.75x1.5mm	0.0783	$ 114	$ 60
	3.75x1.75mm	0.0989	$ 142	$ 84
	3.75x2mm	0.11	$ 193	$ 115
	3.75x2.25mm	0.14	$ 206	$ 122
	3.75x2.5mm	0.17	$ 245	$ 166
	4x1.25mm	0.0575	$ 97	$ 60
	4x1.5mm	0.0612	$ 115	$ 101
	4x1.75mm	0.11	$ 158	$ 135
	4x2mm	0.091	$ 216	$ 120
4x2.25mm	0.16	$ 264	$ 168
4x2.5mm	0.19	$ 306	$ 186
4x2.75mm	0.20	$ 322	$ 234
4x3mm	0.23	$ 466	$ 285
4.25x1.25mm	0.0635	$ 105	$ 70
4.25x1.5mm	0.0848	$ 130	$ 107
4.25x1.75mm	0.11	$ 158	$ 119
4.25x2mm	0.14	$ 221	$ 136
4.25x2.25mm	0.15	$ 280	$ 181
4.25x2.5mm	0.19	$ 311	$ 218
4.25x2.75mm	0.25	$ 394	$ 253
4.25x3mm	0.23		$ 186
4.5x1.25mm	0.0721	$ 130	$ 56
4.5x1.5mm	0.09	$ 156	$ 87
4.5x1.75mm	0.13	$ 225	$ 119
4.5x2mm	0.15	$ 262	$ 143
4.5x2.25mm	0.17	$ 318	$ 208
4.5x2.5mm	0.19	$ 353	$ 234
4.5x2.75mm	0.22	$ 396	$ 271
4.5x3mm	0.30	$ 513
4.75x1.5mm	0.0948	$ 169
4.75x2mm	0.17	$ 322
4.75x2.5mm	0.21	$ 397
5x2mm	0.19	$ 449
5x2.5mm	0.25	$ 586
5x3mm	0.30	$ 708
5.5x2.5mm	0.26	$ 629
5.5x3mm	0.37	$ 884
6x3mm	0.45	$ 1,112
Tapered Baguette	1.25x1x0.75mm	0.01		$ 8
	1.5x1x0.75mm	0.0112	$ 14	$ 6
	1.5x1.25x1mm	0.015	$ 19	$ 11
	1.75x0.75x0.5mm	0.01	$ 13	$ 8
	1.75x1x0.5mm	0.01	$ 13	$ 8
	1.75x1x0.75mm	0.086	$ 17	$ 60
	1.75x1.25x1mm	0.0152	$ 19	$ 11
	1.75x1.5x1mm	0.02	$ 24	$ 15
	1.75x1.5x1.25mm	0.026	$ 32	$ 19
	2x1x0.5mm	0.0093	$ 23	$ 8
	2x1x0.75mm	0.01	$ 24	$ 9
	2x1.25x1mm	0.02	$ 26	$ 17
	2x1.5x1mm	0.024	$ 30	$ 20
	2x1.5x1.25mm	0.0274	$ 34	$ 21
	2.25x1x0.5mm	0.017	$ 22	$ 8
	2.25x1.25x0.75mm	0.0211	$ 27	$ 17
	2.25x1.25x1mm	0.025	$ 32	$ 21
	2.25x1.5x1mm	0.027	$ 34	$ 22
	2.25x1.5x1.25mm	0.027	$ 44	$ 22
	2.25x1.75x1.25mm	0.03	$ 47	$ 24
	2.25x1.75x1.5mm	0.0497	$ 60	$ 29
	2.25x2x1.5mm	0.0516	$ 62	$ 39
	2.5x1x0.5mm	0.02	$ 30	$ 19
	2.5x1x0.75mm	0.0208	$ 31	$ 20
	2.5x1.25x1mm	0.022	$ 33	$ 21
	2.5x1.5x1mm	0.029	$ 51	$ 27
	2.5x1.5x1.25mm	0.03	$ 60	$ 28
	2.5x1.75x1mm	0.036	$ 63	$ 33
	2.5x1.75x1.25mm	0.05	$ 70	$ 33
	2.5x2x1.5mm	0.0611	$ 83	$ 45
	2.75x1x0.5mm	0.023	$ 35	$ 21
	2.75x1.25x0.75mm	0.025	$ 37	$ 23
	2.75x1.25x1mm	0.03	$ 44	$ 28
	2.75x1.5x1mm	0.041	$ 59	$ 26
	2.75x1.5x1.25mm	0.03	$ 67	$ 28
	2.75x1.75x1.25mm	0.04	$ 71	$ 36
	2.75x1.75x1.5mm	0.048	$ 74	$ 43
	2.75x2x1.5mm	0.052	$ 83	$ 46
	3x1.25x0.75mm	0.03	$ 51	$ 34
	3x1.25x1mm	0.038	$ 63	$ 31
	3x1.5x1mm	0.0433	$ 71	$ 35
	3x1.5x1.25mm	0.04	$ 83	$ 45
	3x1.75x1mm	0.043	$ 90	$ 48
	3x1.75x1.25mm	0.06	$ 94	$ 54
	3x2x1mm	0.0622	$ 96	$ 55
	3x2x1.5mm	0.0738	$ 110	$ 67
	3x2x1.75mm	0.082	$ 119
	3x2.5x1.75mm	0.0962	$ 134	$ 84
	3.25x1x0.5mm	0.03	$ 51	$ 34
	3.25x1.25x0.75mm	0.038	$ 63	$ 30
	3.25x1.25x1mm	0.04	$ 66	$ 34
	3.25x1.5x0.75mm	0.0437	$ 71	$ 42
	3.25x1.5x1mm	0.0408	$ 79	$ 45
	3.25x1.5x1.25mm	0.043	$ 83	$ 48
	3.25x1.75x1mm	0.0468	$ 92	$ 52
	3.25x1.75x1.25mm	0.0631	$ 97	$ 59
	3.25x1.75x1.5mm	0.0673	$ 103	$ 61
	3.25x2x1mm	0.052	$ 113	$ 57
	3.25x2x1.25mm	0.066	$ 107	$ 70
	3.25x2x1.5mm	0.0821	$ 119	$ 69
	3.25x2.5x1.75mm	0.11	$ 149	$ 90
	3.5x1.25x1mm	0.034	$ 73	$ 41
	3.5x1.5x1mm	0.0546	$ 86	$ 52
	3.5x1.5x1.25mm	0.047	$ 93	$ 55
3.5x1.75x1mm	0.07	$ 106	$ 61
3.5x1.75x1.25mm	0.0695	$ 105	$ 60
3.5x2x1mm	0.0973	$ 135	$ 67
3.5x2x1.25mm	0.06	$ 117	$ 68
3.5x2x1.5mm	0.075	$ 124	$ 83
3.5x2.5x1.5mm	0.12	$ 168	$ 99
3.75x1.25x1mm	0.036	$ 78	$ 43
3.75x1.5x1mm	0.056	$ 100	$ 64
3.75x1.75x1.25mm	0.08	$ 119	$ 62
3.75x2x1.25mm	0.071	$ 141	$ 79
3.75x2x1.5mm	0.0964	$ 145	$ 97
3.75x2.25x1.75mm	0.096	$ 163	$ 101
4x1.25x1mm	0.04	$ 102	$ 60
4x1.5x1mm	0.05	$ 99	$ 73
4x1.75x1.25mm	0.0785	$ 125	$ 86
4x2x1mm	0.0918	$ 139	$ 93
4x2x1.5mm	0.10	$ 155	$ 109
4x2.5x1.5mm	0.14	$ 207
4x2.5x1.75mm	0.14	$ 210	$ 144
4.25x2x1.5mm	0.091	$ 165	$ 120
4.25x2.25x1.5mm	0.11	$ 195	$ 132
4.25x2.5x1.5mm	0.14	$ 214	$ 130
4.25x2.75x1.75mm	0.17	$ 260
4.5x1.5x1.25mm	0.0864	$ 133
4.5x2x1mm	0.0926	$ 167
4.5x2x1.5mm	0.13	$ 221
4.5x2.25x1.5mm	0.14	$ 244
4.5x2.5x1.5mm	0.15	$ 255
4.5x2.5x1.75mm	0.17	$ 293
4.5x2.75x1.5mm	0.17	$ 223
4.5x2.75x1.75mm	0.18	$ 315
4.75x1.75x1.5mm	0.11	$ 198
4.75x2x1.5mm	0.13	$ 234
4.75x2.5x1.5mm	0.17	$ 306
4.75x2.5x2mm	0.17	$ 306
4.75x3x2mm	0.24	$ 424
5x2.25x1.25mm	0.14	$ 336
5x2.25x1.75mm	0.17	$ 405
5x2.75x2mm	0.23	$ 543
5.5x2.5x1mm	0.17	$ 405
5.5x2.5x2.25mm	0.25	$ 598
5.5x3x2.25mm	0.29	$ 693
6x2x1.5mm	0.18	$ 456
6x3x2.25mm	0.30	$ 760
6.5x3x2.25mm	0.33	$ 614
7x2.25x1.5mm	0.24	$ 654
Princess	1.25mm	0.015	$ 16	$ 15
	1.5mm	0.025	$ 29	$ 27
	1.75mm	0.0354	$ 43	$ 40
	2mm	0.0506	$ 62	$ 56
	2.25mm	0.071	$ 83	$ 76
	2.5mm	0.0933	$ 121	$ 113
	2.75mm	0.11	$ 145	$ 135
	3mm	0.16	$ 226	$ 209
	3.25mm	0.20	$ 294	$ 272
	3.5mm	0.26	$ 431	$ 372
	3.75mm	0.33	$ 627	$ 511
	4mm	0.40	$ 835	$ 776
	4.5mm	0.55	$ 1,567	$ 1,286
	5mm	0.75	$ 3,087	$ 2,484
	5.5mm	1.05	$ 6,454	$ 5,351

Trielle® Brand Trillion Cut Diamonds, Cut exclusively in the U.S.A.

GIA Credentials

Andre' Hut, one of the owners of Gem Hut is also a holder of a GIA Diamonds Certificate, and is currently working towards the Graduate Gemologist certificate. Next Page

Last updated April 2, 2012
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