The Mineral agate Agate is the banded form of the mineral Chalcedony, which is a microcrystalline variety of Quartz. Agate is the most varied and popular type of Chalcedony, …

Agate is a banded form of finely-grained, microcrystalline Quartz. The lovely color patterns and banding make this translucent gemstone very unique. Agates can have many distinctive styles …

Detailed gemstone and jewelry information guide about the gemstone chalcedony, including blue, agate, jasper, carnelian, & chrysoprase.

Chalcedony is not scientifically its own mineral species, but rather a form of Quartz in microcrystalline form. However, the name is an old name, and almost all mineral reference …

Carnelian is the red, orange, or amber variety of Chalcedony. Though often a solid color, it may also be banded, in which case it would be jointly classified as both Agate and Carnelian. …

Agate is a banded form of finely-grained, microcrystalline Quartz. The lovely color patterns and banding make this translucent gemstone very unique. Agates can have many distinctive styles …

Interactive guide to hundreds of rocks and minerals.

Moss Agate - The Mineral and Gemstone KingdomChalcedony containing dense inclusion s of green Hornblende that cause the pattern to resemble moss. Moss Agate is technically not a …

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Onyx is an ancient gemstone, having been used in jewelry and as an ornamental gemstone for carvings since antiquity. Onyx has traditionally been one of the most important engraving and …