Chalcedony

ChalcedonyA silicone based mineral closely related to quartz and agate, Chalcedony has a unique crystalline structure that gives it an enormously variable appearance. This mineral forms in a similar fashion to agates and geodes but due to heat and pressure at the time of formation results in a distinct look and almost silky texture. Chalcedony can be found in a range of colors but most often occurs in semitransparent or white. It has a long archaeological

They were recovered from deposits in Morocco and date back to the late Cretaceous Period

which over the course of millions of years becomes solid while retaining the semitransparent yellowish hue of tree sap

Each of these pieces contain remarkable aquamarine crystal formations - some gem quality - for the true collector

from the middle Miocene around 12-16 million years ago

with the largest known being over 10 feet in length and weighing over 3 tons

The “Benz” part of the name comes from the tip of some calcite crystals which have a clearly defined three-pointed star of pyrite

Flexycalymene Trilobite Geodes are approx

including feldspar

5" Weight- 16

Amethyst is a form of Quartz which gets its beautiful purple tint from the substitution of silicone for iron due to irradiation

Hyalite is unique in its own right

first on the surface and then from the glittering pyrite within