Only 36 currently in stock.
This Willemite and Calcite is very reactive to 255nm shortwave and only has small bits of green glow under Longwave 365nm.
So Shortwave 255nm is best and the only way to see these tge way they are pictured.
These came from Franklin New Jersey and the famous Parker shaft. I only have 40 pieces left of this quality.
These range in size from 1 to 5 ounces.
