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

with a reference card

making it ideal for gifting or for simply adding to your own fossil collection

defined thing

as they are both blue opals

as opposed to Olenite or Riebeckite

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