Locality: Namibia

Description: Prehnite is a calcium aluminium silicate mineral, here in pale to yellowish green, often with dark inclusions. These pieces are tumbled and polished smooth.

Chemical Composition: Ca₂Al(AlSi₃O₁₀)(OH)₂

Approximate Size of 1 piece: 2.5cm x 2cm x 1.5cm 
Approximate Weight of 1 piece: 12g

Quantity: 1pc or 1lb (Approx. 40-50pcs)

We do our best to buy quality products- although not every rock is the same. If you choose to purchase the "staff pick option", we will select the best of the batch for you. Otherwise, it will be at random from the larger batch we have in stock.