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20.70 ct Green Opal Gemstone, Opal Gem in Oval Cabochon Shape for Sale.
Photos are of Actual Product for Sale
20.70 ct Green Opal Stone, Natural Opal in Oval Cabochon Shape for Sale Opal Gemstone in 23.7 x 17 mm Size for Sale, Opal Stone in Medium Green Color

20.70ct Natural Medium Green Opal, Oval Cut, 23.7x17 mm

9.6 out of 10
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Product ID: 675223
Type: Opal
Weight: 20.70 ct 1 gem
Size: mm calibrated
Size: 23.7 x 17 x 9.9 mm
Exact Size: 23.72 x 16.97 x 9.88 mm
Length x Width x Depth
Shape: Oval Cabochon
Color: Medium Green
Clarity: Opaque
Treatment: Untreated
Origin: Brazil
Content: 1 pc
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Product Description

This is a 20.70 carat natural medium green Opal gem, 1 pc in oval shape with an exact size of 23.72 x 16.97 x 9.88 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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GemSelect Certified Store Reviews

GemSelect: Over 22 Years in the Gemstone Business! Thank you for trusting us with your purchase!

Overall Rating -> 9 star ratings

Always a good quality stone. Priced fairly and shipped promptly. Answers emails quickly

Posted By Ron T in November, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I have been very happy with my prior purchases and enjoy the website experience.

Posted By Trouble in November, 2025
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Overall Rating -> 10 star ratings

I needed a very specific color of tourmaline and Gem Select had it. I had to get the client to agree and then ordered the stone. It arrived better than pictured and we all were very happy.

Posted By Tim W in February, 2026
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Overall Rating -> 10 star ratings

the selection is good as are the prices

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

I have a beautiful emerald I purchased from a company names gemselect and they are awesome! You should try them out?

Posted By Lynn in September, 2025
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Overall Rating -> 10 star ratings

IT WAS GREAT SIMPLE I WAS ABLE TO MAKE AN ACCOUNT EASY AND WAS ABLE TO FAVORITE ALL OF MY FINAL SELECTED GEMS, I JUST LOVE IT.

Posted By YE in October, 2025
Source: Bizrate
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