Orange Calcite 8mm Round AAA Grade - 15-16 Inch Overstock Garnet meaning that their facets were

meaning that their facets were cut using industrial grade diamond

The blue colors are photosensitive and may fade when exposed to excessive light or heat

Natural topaz colors include rare and valuable yellow

Dog Teeth Amethyst has a purple and white striped appearance due to its combination of Amethyst and White Quartz

However in some regions

Orange Calcite 8mm Round AAA Grade - 15-16 Inch Overstock Garnet meaning that their facets wereCalcite is a rock forming mineral that is extremely common and found throughout the world in sedimentary, metamorphic, and igneous rocks. Calcite is the principal constituent of limestone and marble. These rocks are extremely common and make up a significant portion of Earth's crust.