Yellow Calcite 10mm Round A Grade - 15-16 Inch bicone_beads orange and rust are due

orange and rust are due to traces of hematite within the stone

Ruby and Sapphire

near the Kennedy Ranges of Australia

It is mined under extremely harsh conditions and the high-grade specimens are more rare than diamonds

Crazy Lace Agate is often dyed to produce colors that do not naturally occur in the stone

Yellow Calcite 10mm Round A Grade - 15-16 Inch bicone_beads orange and rust are dueCalcite 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.