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Buy Concave Cut Ametrine Gems

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ID: 670197
Weight: 9.15ct
Size: 13.4 x 11.7 mm
Clarity: VVS-VS
Content: 1 pc
Price: $ 158.17
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ID: 670191
Weight: 9.05ct
Size: 12.6 x 11.9 mm
Clarity: VVS-VS
Content: 1 pc
Price: $ 130.23
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ID: 676221
Weight: 19.18ct
Size: 20.9 x 12.9 mm
Clarity: VVS
Content: 1 pc
Price: $ 207.14
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ID: 670137
Weight: 9.72ct
Size: 16.4 x 10.1 mm
Clarity: VVS-VS
Content: 1 pc
Price: $ 167.84
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ID: 676227
Weight: 16.13ct
Size: 22.6 x 14.6 mm
Clarity: VVS
Content: 1 pc
Price: $ 174.20
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ID: 676454
Weight: 21.22ct
Size: 20.4 x 16.2 mm
Clarity: VVS
Content: 1 pc
Price: $ 229.18
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ID: 676219
Weight: 13.95ct
Size: 20.1 x 14.3 mm
Clarity: VVS
Content: 1 pc
Price: $ 150.66
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ID: 676449
Weight: 12.63ct
Size: 21.1 x 12.7 mm
Clarity: VVS
Content: 1 pc
Price: $ 136.40
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ID: 676452
Weight: 19.08ct
Size: 22.9 x 16.7 mm
Clarity: VVS
Content: 1 pc
Price: $ 171.72
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ID: 676223
Weight: 12.54ct
Size: 16.8 x 13 mm
Clarity: VVS
Content: 1 pc
Price: $ 112.86
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ID: 676450
Weight: 13.49ct
Size: 17.1 x 12.9 mm
Clarity: VVS
Content: 1 pc
Price: $ 145.69
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ID: 670188
Weight: 7.09ct
Size: 14 x 10 mm (calibrated)
Clarity: VVS-VS
Content: 1 pc
Price: $ 122.44
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Quartz which occurs in bands of yellow and purple has been given the name of ametrine (amethyst + citrine). It is sometimes referred to as trystine and is a natural bicolor combination of amethyst and citrine. Color band combinations in ametrine can range from pale-violet to deep-purple and from pale-yellow to gold-brown. Ametrine's color split is rather abrupt and is not a smooth blend of colors. Both the violet and yellow colors found in ametrine are from traces of iron. Initially cutters favored windowed emerald shapes with a 50/50 split of colors, and much of the rough is still cut this way. More recently, however, some cutters have begun to cut a variety of shapes, many of which create internal reflections that blend the yellow and purple into attractive shades of rosy gold and mauve, or create mosaic-like flashes of both yellow and purple.

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 ametrine gems that you require, filter the results further by using the left-hand menu. You can buy concave-cut ametrine gems by 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 ametrine gems that you are looking for. All items are in stock and ready to be shipped.
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Over 19 Years in the Gemstone Business!

Thank you for trusting us with your purchase!

Overall Rating -> 10 star ratings

It was easy and to the point

Posted By Victorius in May, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Helpselect accomplished all personal growth goals

Posted By Mike in October, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

Very professional site

Posted By JR in January, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Very surprised how quick and efficient it was to checkout and pay. Also found exactly what I was looking for no issues.

Posted By Watson in May, 2025
Source: Bizrate

Overall Rating -> 8 star ratings

everything was fine

Posted By Marc in January, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

When I need a specific stone, gem select is my go to shop. Always a good experience and a great product.

Posted By LeAnn in April, 2025
Source: Bizrate

Overall Rating -> 8 star ratings

Love the ease of access. Easy to find what you are looking for, and fair pricing.

Posted By NickBehnke in October, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

I love gemstones. My father was a jeweler & I used to shop for stones for him.

Posted By Andie in September, 2024
Source: Bizrate

Overall Rating -> 7 star ratings

Excited to see

Posted By Ss in December, 2024
Source: Bizrate
Enlarged Gemstone Image