4" Mookaite Obelisk TZ1259 orange calcite The Tyndall effect is also

The Tyndall effect is also the reason why blue chalcedony appears yellow or brown when strong light shines through it

Purpurite is a manganese phosphate mineral with varying amounts of iron

Solid colors - White

iolite has been used by Vikings as a navigational aid due to its ability to polarize light and determine the direction of the sun on overcast days

Walter's attention to detail and unique styling makes this one-of-a-kind Lemon Quartz piece a great addition for your collection

4" Mookaite Obelisk TZ1259 orange calcite The Tyndall effect is also4" Mookaite Obelisk Approx. Dimensions: 1. 5x1. 5x4 inches Approx. Weight: 225 grams Locality: Australia Mookaite is a sedimentary rock composed primarily of silica, formed through the deposition of microscopic organisms and minerals in ancient marine sediment layers. It derives its distinct coloring from a combination of iron oxide and other mineral impurities. Mookaite is primarily found in Western Australia, particularly in the Kennedy Ranges near