DatoliteDatolite is a not a very common gem, as most localities do not produce gem material for cutting stones of any size. This gem is a very attractive stone with good brilliance and excellent cutting. The stone is very slightly included, which is not uncommon for Datolite, especially from this locality! The rough from which this stone was cut came from a specimen collected by my father, Richard A. Kosnar in 1964 at the famous Prospect Park Quarry in New

This is a classic example of what a "Spinel"-twinned Copper should look like

but large cubes are not terribly common

Specimen # WWMIX112225

Specimen # BOL711B181

but they are certainly gemmy

Christopher J

you'll see the central "core" of the crystal is a dark green (virtually black) hue

A curious and unusual Beryl crystal for anybody who collects gem crystals

which is rare in most colored Diamonds

I could see only a faint blue tone

Nearly impossible to find in today's market

A large percentage of the Cassiterites from this mine are rarely found with any associated minerals