Marcasite is the “sister stone” to pyrite (often referred to as fool’s gold). They have the same chemical makeup but pyrite has a more sturdy, cubic crystalline formation while Marcasite is often found incased in other materials, like this agate, to help stabilize and make it suitable for jewelry.
If you love gold but not the price tag, this material is for you!
Its got all the glimmer without putting too much pressure on the pocket book.
Please allow for +/- 0.25mm discrepancy as these are all hand made pieces of art.