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Gemtype Color Shape Weight Size Clarity Price Origin
You Selected (296): Concave Cuts Clear All
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Purplish Pink Mystic Topaz Gem - 2.1ct Oval Concave Cut (ID: 482914)

Oval Pink Mystic Topaz

2.1ct
9.1 x 7.1 mm
$ 16.40
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1 pc
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Swiss Blue Topaz Gem - 20.9ct Trillion Concave Fantasy Cut (ID: 486089)

Trillion Blue Topaz

20.9ct
22.8 x 15.6 mm
$ 125.40
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Swiss Blue Topaz Gem - 22.4ct Trillion Concave Fantasy Cut (ID: 486096)

Trillion Blue Topaz

22.4ct
27.6 x 11.9 mm
$ 134.28
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Multicolor Mystic Quartz Gem - 4.9ct Oval Concave Cut (ID: 482604)

Oval Multicolor Mystic Quartz

4.9ct
14.1 x 10 mm
$ 16.27
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2 pcs
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Multicolor Mystic Quartz Gem - 5.3ct Oval Concave Cut (ID: 482729)

Oval Multicolor Mystic Quartz

5.25 ct (total 10.49ctw)
14.1 x 10 mm
$ 34.83
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Swiss Blue Topaz Gem - 10.2ct Pear Concave Cut (ID: 486029)

Pear Blue Topaz

10.2ct
18.6 x 12.8 mm
$ 101.59
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Purplish Pink Mystic Topaz Gem - 4.2ct Round Concave Cut (ID: 489914)

Round Pink Mystic Topaz

4.2ct
10.1 mm
$ 32.45
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Purplish Pink Mystic Topaz Gem - 10.6ct Oval Concave Cut (ID: 483030)

Oval Pink Mystic Topaz

10.6ct
16 x 12.2 mm
$ 84.80
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Lemon Quartz Gem - 38.3ct Oval Concave Cut (ID: 458215)

Oval Yellow Quartz

38.3ct
22.6 x 20.3 mm
$ 94.88
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Purplish Pink Mystic Topaz Gem - 11ct Oval Concave Cut (ID: 483020)

Oval Pink Mystic Topaz

11ct
16.2 x 12.2 mm
$ 87.60
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Purplish Pink Mystic Topaz Gem - 11.1ct Oval Concave Cut (ID: 483034)

Oval Pink Mystic Topaz

11.1ct
16 x 12.2 mm
$ 88.56
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2 pcs
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Purplish Pink Mystic Topaz Gem - 2.1ct Oval Concave Cut (ID: 482883)

Oval Pink Mystic Topaz

2.10 ct (total 4.19ctw)
9.2 x 7.2 mm
$ 33.52
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2 pcs
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Purplish Pink Mystic Topaz Gem - 3.1ct Oval Concave Cut (ID: 492940)

Oval Pink Mystic Topaz

3.13 ct (total 6.26ctw)
10.1 x 8.2 mm
$ 43.82
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2 pcs
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Multicolor Mystic Quartz Gem - 5.3ct Oval Concave Cut (ID: 482627)

Oval Multicolor Mystic Quartz

5.31 ct (total 10.62ctw)
14.1 x 10 mm
$ 35.26
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2 pcs
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Multicolor Mystic Quartz Gem - 5.3ct Oval Concave Cut (ID: 482669)

Oval Multicolor Mystic Quartz

5.29 ct (total 10.58ctw)
14.1 x 9.9 mm
$ 35.13
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2 pcs
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Purplish Pink Mystic Topaz Gem - 2.4ct Oval Concave Cut (ID: 482959)

Oval Pink Mystic Topaz

2.36 ct (total 4.71ctw)
9.1 x 7.2 mm
$ 37.68
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2 pcs
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Multicolor Mystic Quartz Gem - 5.3ct Oval Concave Cut (ID: 482630)

Oval Multicolor Mystic Quartz

5.28 ct (total 10.56ctw)
14.1 x 10 mm
$ 35.06
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Multicolor Mystic Quartz Gem - 5.4ct Oval Concave Cut (ID: 482618)

Oval Multicolor Mystic Quartz

5.35 ct (total 10.69ctw)
14.1 x 10 mm
$ 35.49
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2 pcs
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Multicolor Mystic Quartz Gem - 5.2ct Oval Concave Cut (ID: 482619)

Oval Multicolor Mystic Quartz

5.21 ct (total 10.42ctw)
14.1 x 9.9 mm
$ 34.59
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2 pcs
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Multicolor Mystic Quartz Gem - 5.2ct Oval Concave Cut (ID: 482626)

Oval Multicolor Mystic Quartz

5.20 ct (total 10.39ctw)
14.1 x 10.1 mm
$ 34.49
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2 pcs
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Multicolor Mystic Quartz Gem - 5.2ct Oval Concave Cut (ID: 482612)

Oval Multicolor Mystic Quartz

5.19 ct (total 10.37ctw)
14.1 x 10 mm
$ 34.43
Item in Stock
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Concave Cuts
Concave cutting involves cutting facets that are three dimensional (curved). The technology to cut concave facets was developed by the American inventor Douglas Hoffman around 1990. It allows conical-shaped, three dimensional facets to be cut, so that each facet has depth as well as length and breadth. The result is that more of the ambient light is refracted and returned to the eye in the form of brilliance.

In order to find the concave-cut gems that you require, filter the results further by using the left-hand menu. You can buy concave-cut gems by gem type, color and shape. By using the top menu, you can search by carat weight, size, price, origin and other factors, to enable you to find the exact concave-cut gems that you are looking for. All items are in stock and ready to be shipped.
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Better than what I expected. Beautifully cut gem!
Posted By in January, 2019
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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.
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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