Parti Sapphire

Physical Properties

Hardness: 9.0 on Mohs scale; Color: Multi-colored (green, blue, yellow in one stone); Luster: Adamantine to vitreous; Crystal structure: Trigonal; Specific gravity: 3.98-4.06

Formation & Geological History

Formed in metamorphic or igneous rocks (such as basalt-related deposits) under high pressure and temperature. Colors are created by trace elements like iron and titanium in variable concentrations within a single crystal.

Uses & Applications

Primary use is in high-end jewelry and as a gemstone for collectors; sapphire varieties are also used in industrial abrasive applications and watch crystals.

Geological Facts

Parti sapphires are unique because they cannot be replicated by synthetic processes to look natural; each stone's color zoning is as unique as a fingerprint.

Field Identification & Locations

Identify by 'color zoning' (visible bands of different colors), extreme hardness, and lack of cleavage. Commonly found in Australia (Queensland and NSW), Nigeria, and Madagascar.

Identified on: 5/3/2026

Mode: Standard