Materials

 

Jim's protfoli, Kate's Pic 013 Mendocino, cannon 007 Mendocino 065 Mendocino 050

 

Mendocino 062

 

 

 

 

 

 

 

 

 

 

 

 

 

Tiffany Stone

Opal fluorite is a very rare stone of aesthetic and colorful patterns. These come from only one place on earth, the Brush Wellman beryllium mines area near Delta, Utah. This area is now closed to collectors.

Tiffany Stone is composed of predominantly Opalized Fluorite (blues, purples and whites) often mixed with many other minerals such as quartz, chalcedony, dolomite, rhodonite, manganese oxides (blacks), bertrandite (white, yellow or pink) that contains the mineral beryllium {which is what the miners were looking for to make missile nose cones as the material does not heat up at high speeds}, beryl, solid white or translucent-yellowish opal and many other surprises.

Not only are the Tiffany Stones rare because of their single source location, but also because so few ever made it out of the mines without being crushed for their beryllium content.

Obsidian

Natural glass of volcanic origin that is formed by the rapid cooling of viscous lava. It has a glassy lustre and is slightly harder than window glass. It is typically jet black, but the presence of hematite (iron oxide) produces red and brown varieties (mahogany), and tiny gas bubbles may create a golden sheen. , the inclusion of small, white, radially clustered crystals of cristobalite in the black glass produce a blotchy or snowflake pattern (snowflake obsidian). It is sometimes used as a semiprecious stone. Obsidian was used by American Indians and others for weapons, implements, tools, and ornaments, and by the ancient Aztecs and Greeks for mirrors.