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Home Gemstones Chalcedony
20.79 ct Blue Chalcedony Gemstone, Chalcedony Gem in Oval Cabochon Shape for Sale.
Photos are of Actual Product for Sale
20.79 ct Blue Chalcedony Stone, Natural Chalcedony in Oval Cabochon Shape for Sale Chalcedony Gemstone in 19 x 16.1 mm Size for Sale, Chalcedony Stone in Lavender Blue Color

20.79ct Natural Blue Chalcedony, Oval Cut, 19x16.1 mm

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Product ID: 306794
Type: Chalcedony
Weight: 20.79 ct 1 gem
Size: mm calibrated
Size: 19 x 16.1 x 9.4 mm
Exact Size: 18.99 x 16.14 x 9.42 mm
Length x Width x Depth
Shape: Oval Cabochon
Color: Lavender Blue
Clarity: Translucent
Treatment: Untreated
Origin: Brazil
Content: 1 pc
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Product Description

This is a 20.79 carat natural lavender blue Chalcedony gem, 1 pc in oval shape with an exact size of 18.99 x 16.14 x 9.42 mm. This loose Chalcedony gemstone was mined in Brazil and its clarity is Translucent. No treatment has been applied on this natural Chalcedony stone

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Overall Rating -> 10 star ratings

Although the stones are smaller than I thought, I really don't think in millimeters, they are perfect. I plan to put one into a ring and the other into a necklace. Ordering was easy, contact kept me aware of how shipping was going, and delivery was sooner than expected. The quality of stones I have ordered in the past and this recent order is outstanding and stones I will be proud to wear.

Posted By Ktreva52 in June, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

GemSelect offers excellent choices, prices & service- highly recommended! Unfortunately, prior to ordering a replacement gemstone, my jeweler neglected to mention it needed to be one that was a'cushion cuta' to fit the existing mount. Have yet to return/exchangea'

Posted By CJ in March, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

No problems. I had a minor address issue in the past and someone got back to me very quickly and we resolved the issue satisfactorily. I appreciated the quick, concerned response. So important when buyer/seller are so far apart in distance. Thank you Gem Select. Keep up the good work!

Posted By Orphanboy in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

They have a wonderful selection of gems of all sorts, shapes, cuts, and quality. I am very particular about the quality of stones I buy, and found many with VVS clarity and excellent cut and polish. I am thrilled with each of the stones I purchased, and would definitely recommend GemSelect to everyone.

Posted By Debsarabs in February, 2026
Source: Bizrate

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

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

Posted By VinnyD in August, 2025
Source: Bizrate
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