Fluoborite 4.18 ct.
Fluoborite 4.18 ct.
Fluoborite
is a magnesium boron fluorine mineral with formula Mg3(BO)(F,OH)3 and hardness of 3.5.
It is pale fluorescent in cream white at short wave embedded as small granules in non fluorescent calcite matrix. It comes from Franklin Quarry,Franklin Marble,Franklin Mining District, Sussex County, New Jersey,USA.
Size: 12.3x8.3x5.4mm.
Weight: 4.18 ct.
CODE#9071