5.2g Dioptase Crystal on Matrix zacatecas mexico but this piece is very

but this piece is very fine cutting material that will have a great yield and would even look good faceted

It appears that the opal only has a thin coating of the host rock that covers this piece and is almost all opal

Measurement: 73mm x 54mm x 42mm

neat looking ludwigite inclusions

Measurements: 73mm x 58mm x 43mm

5.2g Dioptase Crystal on Matrix zacatecas mexico but this piece is veryThis is an amazing thumbnail sized dioptase crystal . This piece has a beautiful deep blueish green color and great crystal structure. The crystal terminations are fairly gemmy, too (when back lit). The color is slightly different than what the images and videos show, as the camera cant quite capture the actual color. We consider this piece to be a Thumbnail (TN) sized mineral specimen. Locality: Congo Measurements: 21mm x 21mm x 21mm Weight: 5. 2