Buy Loose Concave Cut Gemstones at Affordable Prices from GemSelect

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.

Gemstone Information

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Overall Rating -> 10

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Overall Rating -> 10

I love the variety of stones available, and especially that I'm not buying from a stock image -- the stone I see online is the actual one I'm getting.

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So many stones, so little time and money. Easy to fill up the cart when the stones are beautifully pictured. I hope the real items are as beautiful.

Posted By Wen in January, 2023

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Overall Rating -> 10

Bought my first set of gemstones of gemselect to start off my collection. Everything is what it says it is, 100% legit. They even send u a pamphlet for every gem you order even the $1 ones lol. Good store.

Posted By SuperBee in March, 2023

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Overall Rating -> 10

I was looking for ammolite for my husband. Other websites are not always clear about whether they have genuine ammolite or simulated ammolite. I have purchased from GemSelect before and trust that the stones are genuine. Finding the stones I want is easy, and I love all of the search filter options!

Posted By Ana in September, 2023

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Overall Rating -> 10

Excellent gemstones- bought two Demantoids and two Malaya Garnets

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Overall Rating -> 10

After working with and polishing low-grade, rough fire-agate, only to be disappointed, this shop was nirvana. The costs of some gems might seem high, but I have easily spent the same amount rough polishing lousy material only to get a few hints of fire. If you want Fire-agates, BUY the agates you want. These are excellent specimens and are worth considering.

Posted By Jim in October, 2022

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I have loved GemSelect for years; and have ordered many pretty and special gems for my personal use and for handmade gifts. Now I am going in a new direction and plan to design and build some lovelies for sale on the web.

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Overall Rating -> 10

I’ve enjoyed purchasing stones from this site. It’s convenient and fairly priced.

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Overall Rating -> 9

Everything was good but since I am still new I was surprised at how small the stones where.

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Overall Rating -> 10

Excellent experience!

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Overall Rating -> 10

This is only the second time I have ordered from GemSelect. I am a prolific gemstone collector and I wish I had found this site sooner!

Posted By Beachcomber in September, 2023

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Overall Rating -> 10

Easy to find the stones I was looking for. Always good quality stones

Posted By Erin in June, 2023

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Overall Rating -> 10

The website was very easy to navigate. We appreciated the details about each gem, and the sort and search features of the website were helpful and easy to use.

Posted By AV in May, 2023

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Selected Gemstones

Gemstones A-Z

Buy Concave Cuts Gems

5.36 ct Bi-color Ametrine, 14.5 x 8 mm Octagon Concave Cut From Brazil

8.84 ct Bi-color Ametrine, 13.1 x 11.3 mm Octagon Concave Cut From Brazil

16.63 ct Round Concave Cut Smoky Quartz, 18 mm From Brazil

16.69 ct Round Concave Cut Smoky Quartz, 14.1 mm From Brazil

18.31 ct Yellow Quartz, 18.2 x 18.1 mm Octagon Concave Cut From Brazil

82.38 ct Loose Swiss Blue Topaz, 31.7 x 23.6 mm Oval Concave Cut From Brazil

8.58 ct Octagon Concave Cut Smoky Quartz, 13.9 x 13.8 mm From Brazil

12.85 ct Yellow Quartz, 16.1 mm Round Concave Cut From Brazil

75.76 ct Loose Blue Topaz, 28.7 x 24.1 mm Oval Concave Cut From Brazil

13.08 ct Octagon Concave Cut Smoky Quartz, 16.1 x 16 mm From Brazil

6.15 ct Yellow Quartz, 12 x 12 mm Octagon Concave Cut From Brazil

15.63 ct Yellow Quartz, 16.7 x 16.6 mm Octagon Concave Cut From Brazil

8.65 ct Round Concave Cut Smoky Quartz, 14.1 mm From Brazil

13 ct Octagon Concave Cut Smoky Quartz, 15.7 x 15.6 mm From Brazil

12.78 ct Octagon Concave Cut Smoky Quartz, 16.1 x 16 mm From Brazil

11.59 ct Octagon Concave Cut Smoky Quartz, 15.3 x 15.2 mm From Brazil

27.8 ct Yellow Quartz, 20.6 x 17.8 mm Oval Concave Cut From Brazil

12.44 ct Yellow Quartz, 16.2 mm Round Concave Cut From Brazil

78.13 ct Loose Swiss Blue Topaz, 32.3 x 22.5 mm Oval Concave Cut From Brazil

9.72 ct Bi-color Ametrine, 16.4 x 10.1 mm Octagon Concave Cut From Brazil

9.05 ct Bi-color Ametrine, 12.6 x 11.9 mm Octagon Concave Cut From Brazil

12.79 ct Bi-color Ametrine, 15.7 x 13.5 mm Oval Concave Cut From Brazil

70.69 ct Yellow Quartz, 27.1 x 25 mm Oval Concave Cut From Brazil

69.73 ct Loose Swiss Blue Topaz, 31.4 x 20.9 mm Oval Concave Cut From Brazil

11.12 ct Yellow Quartz, 12.1 mm Round Concave Cut From Brazil

5.16 ct Yellow Quartz, 12 mm Round Concave Cut From Brazil

8.63 ct Octagon Concave Cut Smoky Quartz, 14.1 x 14 mm From Brazil

18.5 ct Octagon Concave Cut Smoky Quartz, 18 x 17.9 mm From Brazil

8.48 ct Oval Concave Cut Smoky Quartz, 12.1 x 10.1 mm From Brazil

13.45 ct Oval Concave Cut Smoky Quartz, 14.1 x 12.1 mm From Brazil

11.45 ct Yellow Quartz, 15.7 x 15.5 mm Octagon Concave Cut From Brazil

8.27 ct Bi-color Ametrine, 12.6 x 11.5 mm Octagon Concave Cut From Brazil

Concave Cuts

Gemstone Information