53 results for sheen

Quartz can have several phenomena including phantom crystals, rainbows or asterism (star effect). In Part 1 of my All About Macrocrystalline Quartz series we discussed the basics of Macrocrystalline ...

Belief in the spiritual healing properties of rocks and crystals goes back beyond recorded history. You can read more about the actual use of rocks in minerals in ancient times for medicinal purposes ...

Silver Sheen Obsidian or Gold Sheen Obsidian are chatoyant stones. When the semiprecious stone material is held in bright light it has a flash of sparkling silver or gold colored chatoyance or lig ...

Mahogany Obsidian is semiprecious stone that is a deep black with blood red streaks. The red coloration is likely the result of trapped hematite or iron. Mahogany Obsidian was probably named that ...

Moonstone is a member of the Feldspar mineral group, containing the feldspar species albite and orthoclase.  It is named for its blue-white sheen which is caused by lamellar structure (alter ...

Mexico is another country rich in rock and mineral resources. Unfortunately a lot of those resources remain unexplored. There is a great Trans-Mexican Volcanic Belt, which crosses the entire count ...

Rainbow Obsidian is black, but when rotated in light it shows flashes of rainbow colors! Rainbow Obsidian comes from the La Revoltosa Mine, San Andreas, Mun. de Magdalena, Jalisco, in Mexico. Ob ...

Chatoyancy is a lustrous, cat's eye effect seen in some gemstones. In a chatoyant material, light is reflected in thin bands within the mineral or stone. Chatoyancy arises either from the fibro ...

Obsidian is a natural volcanic glass. It is actually not a mineral, but a mineraloid.  This glassy, lustrous mineral is found in lava flows. Obsidian is produced when lava cools very quickly. T ...