Opal on Sepentine with Magnetite, UV. San Benito, California. 213 grams.
USD 89.99 USD
Specifications
| Shape | Natural |
| Country Of Origin | United States |
There are other minerals including tiny micro Magnetite crystals/partial crystals which are black, very reflective and attracted to a magnet. From Clear Creak, San Benito, California. Fluoresces nicely under 365nm long wave UV light and little to no reaction under 254nm short wave.