Gem Silica slab with sagenite inclusions from the Ray Mine, Arizona. The vivid blue-green color is characteristic of chrysocolla chalcedony, considered the rarest and most valuable variety of chalcedony. Sagenite inclusions create unique patterns within the translucent body, giving each piece individuality. The Ray Mine is one of the most famous American sources for gem silica, producing material that is highly sought after by cutters and collectors.
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Shown damp to simulate polish
74.12 grams / 103 x 59 x 7 mm
Estimate: $300 - $325
