4.5" Colombian Lemurian Crystal TC1741 quartz is also called birefringence and

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

5x8 inches

Unlike typical smooth-faced aquamarine

Tharsis Mines

29-million-year-old translucent

4.5" Colombian Lemurian Crystal TC1741 quartz is also called birefringence and4. 5" Colombian Lemurian Crystal Approx. Dimensions: 4. 5x1. 75x1. 25 inches Approx. Weight: 178 grams Locality: Santander, Colombia All of our Colombian quartz is completely natural and has had no polishing done. Colombian optical quartz crystals are also referred to as Colombian Lemurians. It has been theorized that this particular variety of quartz gets its unique luster and optical clarity from the addition of Aluminum in its chemical composition.