Very beautiful troïdia sapphire of nearly 5 carats with a deep blue between royal blue and petroleum blue which gives it great elegance.

Hexagonal crystals up to 4 mm, on manganese oxide (Psilomelane) with a thin layer of wad and limonite

Natural stone, with its certificate of authenticity. sYG tone (yellow-green), dark medium intensity, with very few inclusions, of "solid" type that do not alter the stone's durability or aesthetics; they are an integral part of this beryl, guaranteeing its natural authenticity.

Thickness: 2 cm. Bournonite: a mineral composed of lead, copper, and antimony sulfide, it contains approximately 42% lead, 13% copper, 25% antimony, and 20% sulfur. Crystalline system: orthorhombic.