Aragonite with Sulfur from Giumentaro Mine DX3449 obsidian creating layered internal landscapes that

creating layered internal landscapes that are visible within the crystal

The blue color can be observed when the quartz is illuminated with a strong light or direct sunlight

Calcite and Chalcoyprite from Kazakhstan

longer wavelengths are transmitted more while shorter wavelengths are diffusely reflected by scattering

Aragonite with Sulfur from Giumentaro Mine DX3449 obsidian creating layered internal landscapes thatAragonite with Sulfur from Giumentaro Mine Approx. Dimensions: 2x2x2 inches Approx. Weight: 159 grams Locality: Giumentaro Mine, Capodarso, Enna Province, Sicily, Italy This aragonite specimen from the Giumentaro Mine features well formed crystals with a warm, natural luster, and in some pieces, striking associations with native sulfur. The contrast between aragonite and bright yellow sulfur adds visual interest, while the minerals structure gives the