Zincite & Franklinite - New Jersey #1 sd with a reference card

with a reference card

This red Scapolite cabochon shows a rare cats eye effect under direct light

as they are both blue opals

as opposed to Olenite or Riebeckite

Size: 66mm x 56mm

Zincite & Franklinite - New Jersey #1 sd with a reference cardThis natural form of red Zincite with black Franklinite is from the famous Franklin Mining District in New Jersey, USA. Also present are Calcite, which fluoresces red under shortwave UV light, and Willemite, which fluoresces green under shortwave UV light. You will receive the exact Zincite crystal pictured. Most Zincite specimens on the market were formed over a number of years in the chimney of a zinc smelter, originally found in Poland but have