1.87ct Emerald Cut Green & Pink Bi-Colour Tourmaline

Bi-colour tourmaline represents a geological phenomenon so rare it borders on the miraculous — a single crystal that shifted its chemical composition mid-growth, producing two distinct, harmonious hues within one stone. This 1.87 cts Bi-Colour Tourmaline of Green & Pink hue from Brazil was selected for the Skyjems Archive not as an afterthought, but as a deliberate acquisition. It is entirely unheated and untreated — a distinction that places it in the top fraction of the global Bi-Colour Tourmaline supply and is the single most important value driver in the collector market. Brazil's geological diversity — from Minas Gerais to the Amazon basin — has made it the world's most prolific producer of collector gemstones.

• Species: Natural Bi-Colour Tourmaline
• Weight: 1.87 cts
• Dimensions: 8.80 x 5.94 x 3.82 mm
• Shape & Cut: Emerald Cut, Step Cut
• Color & Saturation: Green & Pink / Green: 5 Medium / Pink: 3 Light
• Clarity & Transparency: Eye Clean
• Treatment: None / Unheated & Untreated
• Origin: Brazil
• Archive Reference: TR0138