Rubino taglio ovale cabochon, 8,70 ct Ciottoli Opale nero

Opale nero

Beautiful indigo blue tanzanite

The cut with elongated proportions presents itself as a marquise whose crown faces are rhomboidal and triangular in shape

lost wax casting with Natural Ruby

Rubino taglio ovale cabochon, 8,70 ct Ciottoli Opale neroThe gem appears included when observed with a 10x lens: clearly visible evidence of lead glass filling treatment. The pleasant purple pink color adequately compensates for the quality of the original rough. Pleasant translucency effect; at the base of the cabochon the natural inclusions called "silk" are visible, which follow the growth planes of the crystal. Not perfect proportions.