Sonolite 5.04 ct.
Sonolite 5.04 ct.
Sonolite
Is manganese fluoro silicate with formula Mn9(SiO4)4(OH,F)2 and hardness of 5.5.
It comes from Llyn du Bach Mine, Moel Ysgyfarnogod, Harlech, Gwynedd, Wales / UK; waxy dark orange-brown vein-like banded aggregates in Tephroite-Rhodochrosite-Spessartine-matrix.
Size: 15.8x6.5x4.8 mm.
Weight: 5.04 ct.
CODE#9397