Good Price Very Beutiful Crinoid Fossile Coral 32,40 carat Oval Cabochon Nice Colour and Pattern from China Purchase Now!

Weight: 32,40 carat
Size: 30x23x4,9 mm
Shape: Oval Cabochon
Colour: Grey Black pattern with element of colours
Clarity: Opaque
Luster: 3-4 (Grading from 1-6)

Very nice natur design Fossile Coral. Fossile of different kind cut to a gemstone is normaly quarts of some kind. Quarts wich by miljons of years penetrate and replace the fossile but leave structures and pattern intact. This kind of material can be cut into interesting gemstones. Normaly this gemstones are cut into different form of cabochon.

Quartz is a mineral in a broad sense with similar chemical composition. Quartz can be divided into two main subsets. Crystalline (macro-crystalline), the variety is generally associated with quartz. This group includes Quartz, Amethyst, Smoky Quartz, and others. The second group are polycrystalline (micro-crystalline), and have in turn several subgroups. Here we find the groups Chalcedony, Jasper, Quartzites and silicate replacements. Known examples here are Agate, Carnelian and different varieties of jasper and Tiger’s eye.

Read/Learn more about Quarts under "Gemstoneinformation"