Rubino grezzo 14,90 ct ciuccio visibili inclusioni a specchio tipiche

visibili inclusioni a specchio tipiche della specie mineralogica

5 cm and includes a chain

Beautiful pair of blue topazes with light secondary green tints

Not perfect proportions

Rubino grezzo 14,90 ct ciuccio visibili inclusioni a specchio tipicheThe gem appears included when observed with a 10 magnifying glass. The glassy appearance of its surface is caused by the heating treatment in the presence of fluxing materials, such as borax, in which the rough stones are immersed. These fluxes allow the recrystallization and internal fractures of the ruby, but having a lower melting point than the gem, they dissolve to form a glassy patina that remains on the surface of the rough stone and that will