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4.01 ct Multicolor Black Opal Gemstone, Black Opal Gem in Trillion Cabochon Shape for Sale.
Photos are of Actual Product for Sale
4.01 ct Multicolor Black Opal Stone, Natural Black Opal in Trillion Cabochon Shape for Sale Black Opal Gemstone in 12 x 12 mm (calibrated) Size for Sale, Black Opal Stone in Multicolor Color

4.01ct Natural Multicolor Black Opal, Trillion, 12.4x11.8 mm

9.6 out of 10
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Product ID: 746107
Type: Black Opal
Weight: 4.01 ct 1 gem
Size: 12 x 12 mm calibrated
Size: 12.4 x 11.8 x 6.4 mm
Exact Size: 12.39 x 11.80 x 6.38 mm
Length x Width x Depth
Shape: Trillion Cabochon
Color: Multicolor
Clarity: Opaque
Treatment: Smoked
Origin: Ethiopia
Content: 1 pc
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$
140.75
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Product Description

This is a 4.01 carat natural multicolor Black Opal gem, 1 pc in trillion shape with an exact size of 12.39 x 11.80 x 6.38 mm. This loose Black Opal gemstone was mined in Ethiopia and its clarity is Opaque.

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GemSelect Certified Store Reviews

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Overall Rating -> 10 star ratings

Love the precise descriptions and calibrations of hte loose gemstones. Would like to have seen more variety in the size gem I was looking for.

Posted By RenoRose in January, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Gem Select has a user friendly website and the product is very good as is the price. The gems are described accurately and I always get what I think I'm getting.

Posted By Happy Customer in June, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Easy and functional

Posted By Dessa in March, 2026
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Overall Rating -> 9 star ratings

Everything was good, the purchase was what I expected and what they show is what you get.

Posted By Mr. in March, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

I love the product and the details about each of them.

Posted By Love It! in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I feel Gemselect is a trustworthy company to buy from

Posted By Becky in October, 2025
Source: Bizrate
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