Ruby and Zoisite Slab from Tanzania

Ruby in Zoisite Polished Slab with UV Fluorescence – Tanzania | 513 g

This striking Ruby in Zoisite slab from Tanzania features a beautiful natural combination of vibrant green zoisite, deep black mineral inclusions, and rich raspberry-red ruby crystals. The polished surface reveals an intricate pattern of contrasting colors and textures, creating a dramatic display of this fascinating mineral association.

The lush green zoisite forms the foundation of the specimen, while scattered ruby crystals appear as reddish-purple patches and elongated streaks throughout the stone. Dark mineral inclusions, commonly hornblende, add bold contrast and highlight the unique natural patterns.

Under ultraviolet light, the ruby crystals come alive with brilliant red-pink fluorescence! The vivid fluorescent areas stand out dramatically against the darker, non-fluorescent matrix, revealing the distribution of ruby throughout the slab. This remarkable transformation makes the specimen especially appealing to collectors of UV-reactive minerals.

With its substantial size, polished face, and distinctive natural coloration, this slab makes an impressive display piece and a wonderful addition to any collection of ruby-bearing minerals.

Minerals: Ruby (Corundum) in Zoisite, with dark mineral inclusions
Origin: Tanzania
Dimensions: 10 cm wide × 14 cm long × 1.5 cm thick (3.94 × 5.51 × 0.59 inches)
Weight: 513 g (18.10 oz)
Mineral Class: Oxides (Ruby/Corundum) and Silicates (Zoisite)
UV Reaction: Bright red-pink fluorescence in the ruby crystals
Finish: Polished slab