$30.00
Here is a treasure found here in the Black Hills of South Dakota, a great piece of Chalcedony with a Calcite Crystal center. The unique specimen measures 2 3/4″ x 1 5/8″ x 1 1/4″. It will fluoresce bright green and under a SW/UV light while the Calcite will fluoresce orange. Make it part of your mineral collection!
In stock
Chalcedony is a cryptocrystalline form of silica, composed of very fine intergrowths of the minerals quartz and moganite. Chalcedony 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 | .25 lbs |
|---|---|
| Dimensions | 2.75 × 1.625 × 1.25 in |
