Prehnite 12x16-18x25mm Jagged Rough Collar hps_07252024 or color-enhanced

or color-enhanced

African Turquoise is not actually Turquoise

Labradorite is usually gray to green

light tans and earthtones

it is formed through the combination of carbonated water

Prehnite 12x16-18x25mm Jagged Rough Collar hps_07252024 or color-enhancedPrehnite was the first mineral to be named after a person: its discoverer, Dutch Colonel Hendrik Von Prehn. Von Prehn discovered the stone in South Africa in 1774. Prehnite is translucent to transparent, in colors from light green to yellow green to olive, with occasional inclusions of Black Tourmaline that crisscross the stone in fibrous patterns. It is a phyllosilicate composed of silicon, calcium and aluminum with trace amounts of iron.