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Gemtype Color Shape Weight Size Clarity Price Origin
You Selected (72): Huge Gems Clear All
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Gold Sheen Black Obsidian Gem - 123.4ct Oval Cabochon (ID: 447905)

Oval Black Obsidian

123.4ct
65.1 x 33.1 mm
$ 123.42
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Black Star Sapphire Gem - 27.3ct Oval Cabochon (ID: 350891)

Oval Black Star Sapphire

27.3ct
19.4 x 16.5 mm
$ 545.80
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Black Star Sapphire Gem - 20.3ct Oval Cabochon (ID: 350892)

Oval Black Star Sapphire

20.3ct
19.2 x 15.9 mm
$ 553.92
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Black Tourmaline Gem - 81.4ct Oval Facet (ID: 348201)

Oval Black Tourmaline

81.4ct
28.3 x 23.2 mm
$ 219.50
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Black Tourmaline Gem - 61.5ct Octagon / Scissor Cut (ID: 348844)

Octagon / Emerald Cut Black Tourmaline

61.5ct
33.6 x 15.8 mm
$ 169.07
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Black Tourmaline Gem - 27ct Baguette / Scissor Cut (ID: 365125)

Baguette Black Tourmaline

27ct
25.8 x 12.2 mm
$ 74.30
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Gold Sheen Black Obsidian Gem - 71.9ct Oval Cabochon (ID: 447906)

Oval Black Obsidian

71.9ct
43.1 x 31 mm
$ 71.86
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Black Gold Sheen Obsidian Gem - 71.3ct Cushion Cabochon (ID: 447899)

Cushion Black Obsidian

71.3ct
48.6 x 22.2 mm
$ 71.31
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Black Star Sapphire Gem - 32.7ct Oval Cabochon (ID: 350640)

Oval Black Star Sapphire

32.7ct
19.4 x 16.4 mm
$ 655.75
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Black Spinel Gem - 11ct Trillion Rose-Cut (ID: 328421)

Trillion Black Spinel

11ct
14.1 x 13.8 mm
$ 22.02
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Black Spinel Gem - 11.3ct Trillion Rose-Cut (ID: 328414)

Trillion Black Spinel

11.3ct
14.2 x 13.9 mm
$ 22.58
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Black Spinel Gem - 11ct Trillion Rose-Cut (ID: 328477)

Trillion Black Spinel

11ct
14.1 x 13.9 mm
$ 22.06
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Black Spinel Gem - 11ct Trillion Rose-Cut (ID: 328453)

Trillion Black Spinel

11ct
14.1 x 13.8 mm
$ 22.08
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Black Spinel Gem - 7.5ct Round Rose-Cut (ID: 438429)

Round Black Spinel

7.5ct
12 mm
$ 22.53
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Black Tourmaline Gem - 57.6ct Oval Checkerboard (ID: 347926)

Oval Black Tourmaline

57.6ct
25.7 x 22.7 mm
$ 158.45
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Black Tourmaline Gem - 26.1ct Oval Facet (ID: 348823)

Oval Black Tourmaline

26.1ct
19.2 x 16.6 mm
$ 71.89
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Black Tourmaline Gem - 52.9ct Oval Facet (ID: 348842)

Oval Black Tourmaline

52.9ct
25.7 x 21.4 mm
$ 264.45
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Black Spinel Gem - 7.3ct Round Rose-Cut (ID: 438862)

Round Black Spinel

7.3ct
11.9 mm
$ 21.99
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Black Tourmaline Gem - 32.6ct Octagon Checkerboard (ID: 362161)

Octagon / Emerald Cut Black Tourmaline

32.6ct
23.3 x 13.6 mm
$ 89.54
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Black Star Sapphire Gem - 32.3ct Oval Cabochon (ID: 350641)

Oval Black Star Sapphire

32.3ct
18.4 x 16.5 mm
$ 483.75
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Black Tourmaline Gem - 45.9ct Baguette / Scissor Cut (ID: 347936)

Baguette Black Tourmaline

45.9ct
26.7 x 16.3 mm
$ 125.20
Item in Stock
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Huge Gems
Choose from a large selection of giant gems, whether they are for a gemstone collection, ornaments or statement jewelry pieces. Shop for huge faceted gems and cabochons of various shapes, sizes and colors, including tourmaline, quartz, garnet and lesser-known gems, such as rhodochrosite. Large star and cat's eye gemstones are also available. From this page, you can filter by gem type, color, size, price, carat weight and several other factors to find the perfect big gemstone for your jewelry.
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Posted By RaeRae in January, 2019
Source: Bizrate
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Posted By BO in January, 2019
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Overall Rating -> 10 star ratings
As Always never disappointed in any gemstone I purchase from this site. I have never had a problem. Thank-You Gemselect for offering such a comprehensive variety . I will continue to order from this site.
Posted By Brian in January, 2019
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Easy to find what i'm looking for on website, very clear, like photos
Posted By Lifter in January, 2019
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Better than what I expected. Beautifully cut gem!
Posted By in January, 2019
Source: Bizrate
Overall Rating -> 10 star ratings
Gem select is the most trustworthy web site for gems. What I see in the picture is exactly what I get. Size is indicated by carat weight, and not the picture size, as they are trying to give an up close view of the gem I am hoping to buy. It was so easy to find the stones I was looking for at a price I could afford.
Posted By Nan in January, 2019
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Size and Weight

Gems are always measured in Millimeter (mm)

Dimensions are given as;
length x width x depth,
except for round stones which are;
diameter x depth

Select gems by size, not by weight!
Gem varieties vary in density, so carat weight is not a good indication of size

Note: 1ct = 0.2g

Size Comparison Chart