Tanzanite 5 Carat

Specifications and Characteristics

Here are a few ways to identify an authentic tanzanite gemstone:

• Color: Violet blue to blue-violet to violet purple, colors can change based on the lighting and angle in which the stone is viewed from. 

• Crystal structure: Zoisite (calcium aluminum hydroxyl sorosilicate) containing vanadium

• Luster: Vitreous, pearly on cleavage surfaces

• Transparency: Transparent with deep color

• Refractive index: 1.69-1.70

• Density: 3.35

• Cleavage: Perfect {010} and Imperfect {100}

Tanzanite stones are chemically composed of three primary elements: calcium, aluminum, and silicate. The complex composition makes tanzanite difficult to find even within the country of Tanzania. What is a tanzanite gemstone used for? Let’s explore how people have discovered and cherished this fine jewel.