Prehnite 4mm Round AAA Grade - 15-16 Inch hps_03272025 The Madagascar agate has the

The Madagascar agate has the ability to encourage positive thoughts

Brazilian Amazonite is an opaque blue-green to light green stone

thought to be derived from trace amounts of titanium

Chakra: Throat

Indigo gabbro is a color variant of the igneous mineral

Prehnite 4mm Round AAA Grade - 15-16 Inch hps_03272025 The Madagascar agate has thePrehnite 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.