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18.90 ct Green Opal Gemstone, Opal Gem in Oval Cabochon Shape for Sale.
Photos are of Actual Product for Sale
18.90 ct Green Opal Stone, Natural Opal in Oval Cabochon Shape for Sale Opal Gemstone in 18.9 x 15.8 mm Size for Sale, Opal Stone in Medium Green Color

18.90ct Natural Medium Green Opal, Oval Cut, 18.9x15.8 mm

9.7 out of 10
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Opal Product ID: 675197
Type: Opal
Opal Weight: 18.90 ct Opal 1 gem
Opal Size: mm calibrated Opal
Opal Size: 18.9 x 15.8 x 11.9 mm Opal
Opal Exact Size: 18.86 x 15.79 x 11.94 mm
Length x Width x Depth
Opal Shape: Oval Cabochon Opal
Opal Color: Medium Green Opal
Opal Clarity: Opaque Opal
Opal Treatment: Untreated
Opal Origin: Brazil Opal
Content: 1 pc
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Product Description

This is a 18.90 carat natural medium green Opal gem, 1 pc in oval shape with an exact size of 18.86 x 15.79 x 11.94 mm. This loose Opal gemstone was mined in Brazil and its clarity is Opaque. No treatment has been applied on this natural Opal stone

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Overall Rating -> 10 star ratings

I was able to find what I wanted very easily!

Posted By Lenny in January, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

It was fine . Wish there had been more round stones to select from

Posted By Emm in January, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

All these questions, and I don't have to give any blood. What a Deal... I absolutely enjoy the Gem Select emails every month. This one today was special. I always say, I'll know it when I see it. This stone today was the One. Odd and Intriguing. Thank You So Much for all that you do.

Posted By G.W. in June, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I am filling a small treasure chest and picked a nice amethyst.

Posted By VinnyD in August, 2025
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Overall Rating -> 10 star ratings

First time so this is an experiment! Shopping is so fun on this site, though!

Posted By Gem Delight in March, 2025
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Overall Rating -> 10 star ratings

Great prices!!! High quality gemstones.

Posted By Ricky in October, 2025
Source: Bizrate
Download Identification Report PDF
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ICA Brief Report $ 90.00
Turnaround Time: 8-12 working days Details
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