Zeolite Minerals / 2-3" AVG - 1 KILO LOT Jewelry Oco geodes form when groundwater

Oco geodes form when groundwater deposits sediment and other minerals like quartz inside basalt pockets

which tends toward fan-like blades

white topaz

Pieces measure approximately 1-5 kg (AVERAGE SIZE)

Emerald is a variety of beryl

Zeolite Minerals / 2-3" AVG - 1 KILO LOT Jewelry Oco geodes form when groundwaterQuantity: 1 kilogram Average size range: 2 to 3 inches Zeolites are aluminum and silicon rich minerals that form when volcanic rocks react with groundwater that contains alkali metals like lithium or sodium. They are named from the Greek word z, meaning to boil, as they can release large amounts of steam from trapped water when heated. There are over 40 kinds of natural zeolites, with heulandite, stilbite, and natrolite being among the most common.