$100.00
M817: South Dakota Chalcedony – Locality: South Dakota. Selection: Rough and polished specimen.
Appearance: A treasure found here in the Black Hills of South Dakota, a great piece of Chalcedony that was cut and polished in our very own Lapidary Department. It will fluoresce bright green color under a SW/UV light.
Please Note: display photos are shot under various light settings.
Approximate measurements: LxWxH – 6 1/4″ x 4″ x 3 3/4.
Availability: single specimen, exclusive.
In stock
Chalcedony is a cryptocrystalline form of silica, composed of very fine intergrowths of the minerals quartz and moganite. It has a waxy luster, and may be semitransparent or translucent. It can assume a wide range of colors, but those most commonly seen are white to gray, grayish-blue or a shade of brown ranging from pale to nearly black.
| Weight | 4.5 lbs |
|---|---|
| Dimensions | 6.25 × 4 × 3.75 in |
