This agate is found in caverns near San Carlos, Chihuahua, Mexico.We have kept the natural crystal surface on top and there are two rings in the back to accommodate a chain. Total height – 34 mm x 34 mm wide. Weight – 26.3 grams. Lapidary work – John DeLong. Please note that this item does not qualify for free shipping due to its depth. Tracked and insured shipping will be added, unless total purchase is $250 or over before tax.