Arizona Horizon Gem Silica Chrysocolla Ring

Gem silica chrysocolla is a rare, prized, and breathtaking treasure found mostly in the deserts of North America. The color comes from copper oxide, the mineral matrix is microcrystalline chalcedony, meaning that these are only found in near copper deposits. It's a vivid, color saturated stone with just enough translucence to show light through. It has a Mohs hardness of 7 and is a durable, long wearing stone.

This piece of Gem silica was mined in Arizona in the 1990s, and hand cut by our late founder, Angelo Roncari. It features a wide band of intense greenish blue and a smaller band of swirly teal, separated by a ribbon of clear, looking very much like the endless blue skies it was formed beneath.

Angelo loved these stones, so anytime Sarah works on sculpting a design for them, she tries to create a piece that her mentor dad would be proud of. Sharp angles and sweeping curves of yellow gold meet to create a bezel for both stones.

Chrysocolla weighs 1.59 carats and measures 12.8 x 6.1mm. The natural diamond accent is a tapered baguette weighing 0.16ct. Handcrafted in 14k yellow gold, one of a kind piece. Design 2025 Sarah J Christenson