Sugar Quartz With Calcite

Sugar Quartz With CalciteOne of the most common minerals on earth, Calcite is a form of Calcium Carbonate and is one of the primary components in limestone. It is found in a vast array of forms, from prismatic crystals to fibrous wisps. Calcite is clear naturally but it can be found in a variety of brilliant colors due to the presence of chemical impurities during formation. These large, showy specimens contain chunky calcite crystals of exceptional shape draped within a

Barite is often found in conjunction with Cerussite

Depending on the minerals present during fossilization

Grape Agate is a unique and distinctive mineral known from only a few locations on earth

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

have a high degree of clarity and cover the majority of the quartz surface

depending on the presence of minerals like manganese or iron during the formation of the crystals

with some internal damage causing a rattling sound

silky and lustrous texture of these fibrous Malachite specimens from Congo combined with the incredibly rich color make them deservedly popular among collectors

There are 5 on this plate for reference of what they look like

Not technically an agate

Harpes (Scotoharpes) Trilobite

Chalcedony has a number of forms that are also considered gems of their own