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13.04 ct Black Opal Gemstone, Opal Gem in Marquise Cabochon Shape for Sale.
Photos are of Actual Product for Sale
13.04 ct Black Opal Stone, Natural Opal in Marquise Cabochon Shape for Sale Opal Gemstone in 29.8 x 13.9 mm Size for Sale, Opal Stone in Black Color

13.04ct Natural Black Opal, Marquise, 29.8x13.9 mm

9.6 out of 10
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Product ID: 664567
Type: Opal
Weight: 13.04 ct 1 gem
Size: mm calibrated
Size: 29.8 x 13.9 x 7.3 mm
Exact Size: 29.79 x 13.90 x 7.30 mm
Length x Width x Depth
Shape: Marquise Cabochon
Color: Black
Clarity: Opaque
Treatment: Smoked
Origin: Ethiopia
Content: 1 pc
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$
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Product Description

This is a 13.04 carat natural black Opal gem, 1 pc in marquise shape with an exact size of 29.79 x 13.90 x 7.30 mm. This loose Opal gemstone was mined in Ethiopia and its clarity is Opaque.

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Overall Rating -> 9 star ratings

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Posted By Ray in November, 2025
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I've purchased things from GemSelect before. What you see is what you get, which is not always the case with gem sites online. You can find some good value with gem select, and I will buy from them again.

Posted By Meyeusername in March, 2026
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Overall Rating -> 10 star ratings

All items were delivered on time with all items meeting or exceeding my expectations. Cut, clarity and color were very close to the photos and description.

Posted By Bob D in December, 2025
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