Turquoise
 
Turquoise was one of the first gemstones to be mined. Turquoise varies in color from sky-blue to green, depending on the amount of iron and copper it contains

Fossil
 
This most common fossil found is the plant that once lived in a sea or lake. Typically, after the organism dies, the soft parts decompose, leaving only hard-part the shell , or wood. Buried in layers of sediment, they grandually turn into stone.

Opal
 
Common opal in its various forms is widely mined for us as abrasives, insulation media, fillers, and ingredients in ceramic manufacture. Precious opals are usually finished en cabochon because their color play shows best on smoothly rounded surfaces.
Cinnabar
 
Cinnabar is mercury sulfide. Commonly  occurs associated with pyrite, marcasite, and stibnite in veins near recent volcanic rocks. and is also found in deposits around hot springs. The mining and use of cinnabar is implied. but not authenticated.

Aquamarine
 
Aquamarine, mearning "sea water." is almost universally found in cavities in pegmatites or in alluvial deposites, and forms larger and clearer crystals than emerald. In ancient times, aquamarine amulets engraved wit Poseidon were thought to proteck sailors.

Tiger's Eye
 
TIGER'S EYE QUARTZ, ALSO SPELLED tiger-eye, is a semiprecious variety of quartz exhibiting chatoyancy, a vertical luminescent band like that of a cat's eye. Unlike cat's-eye quartz, tiger's eye is formed when parallel veins of crocidolite (blue asbestos) fibers are first altered to iron oxides and then replaced by silica. As a result, it is more opaque and has a rich yellow to brown color. When cut en cabochon, the gem has a fine luster.