This stone is something I purchased in a small rock and mineral shop in southern Utah. These stones are native to Utah, and was mined pretty much in the owners backyard. The yellow portion of the rock is calcite and the brown portion is Aragonite. Stone is set in a handmade bezel. The back of the stone is visible. Bail is also handmade.
Size is measured from top of bail to bottom of pendant, 2.2 inch long by 1.2 inch wide, comes with an 18 inch sterling snake chain.