6" Blue Smoke Colombian Lemurian TF3126 dangle is also called birefringence and

is also called birefringence and is also responsible for the incredible displays of rainbows inside many optical calcite pieces

Chalcedony itself is a microcrystalline variety of quartz

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This piece is completely natural with no polishing or touch-up done and exhibits the beautiful clarity and etchings typical of quartz from Diamantina

6" Blue Smoke Colombian Lemurian TF3126 dangle is also called birefringence and6" Blue Smoke Colombian Lemurian Approx. Dimensions: 6x1x1 inches Approx. Weight: 114 grams Locality: Santander, Colombia Acrylic stand and putty not included, but may be purchased separately in our Acessories section. These Blue Smoke Lemurians are from a single pocket of material mined in Santander, Colombia. It has been theorized around the internet that the blue "smoke" is the inclusion of the lithium mineral Cookeite, which was thought to form