Dalmatian Quartz 15.75 ct
Round Cabochon
19.20 mm
Brazil
max10611

Dalmatian quartz

this is a light smoky quartz with brown patches /clouds like cotton balls.

These features are not completely explained,

but it seems they are due to natural earth irradiation that cause the deformation

of the crystal lattice and changed the electrons orbits,

From Brazil.