Sonoran Dendritic Rhyolite PAIR, 22.70 ctw

Soft bluish-gray with stark white and deep maroon delicate dendrites. Somewhat shiny satin finish. Flat back with beveled edge for ease of setting. You will receive the exact gemstone shown in the pictures.

Weight: 22.70 carats total weight
35.16 L x 12.09 W x 3.78 H mm
35.31 L x 12.06 W x 3.76 H mm

Species: Rhyolite
--Variety: -
Trade Name(s): Sonoran Dendritic Rhyolite, Sonoran Dendritic Jasper*
Origin: Mexico
Enhancement(s): (N) Natural

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* Using the term "jasper" to describe Rhyolite is deceptive and a punishable crime under US Federal Trade Commission regulations.  Jasper is an opaque form of cryptocrystalline quartz known as chalcedony with a completely different chemical make-up.
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American Gem Trade Association Gemstone Enhancement Codes

Enhancement: Any treatment process other than cutting and polishing that improves the appearance (color/clarity/phenomena), durability, or availability of a gemstone.

(N) Natural
No modification; natural stones which are not currently known to be enhanced (or currently has no known modification process).