Natural Rainbow Obsidian – 42.42 Carat

Discover the captivating beauty of natural rainbow obsidian, a volcanic glass prized for its hidden iridescent colors and distinctive patterns.

This striking 42.42-carat gemstone features an unusual pentagon shape with a beautifully sculpted, faceted pyramid-style dome. Its deep black surface reveals subtle flashes of emerald green, violet purple, and blue as light moves across its polished facets.

The geometric design creates an intriguing interplay of light and shadow, giving this gemstone a bold, architectural appearance.

Unlike traditional rounded cabochons, this stone’s angular silhouette and raised facets make it particularly appealing for contemporary jewelry designs and one-of-a-kind artisan creations.

Gemstone Details

• Gemstone: Natural Rainbow Obsidian
• Origin: Not independently verified
• Weight: 42.42 carats
• Height: 28.24 mm
• Width: 29.90 mm
• Depth: 12.20 mm
• Shape: Pentagon / Five-Sided Geometric
• Cut: Faceted Pyramid-Style Cabochon
• Base Color: Deep Black
• Iridescence: Green, Purple, and Subtle Blue
• Finish: Polished
• Back: Flat
• Condition: Loose, Undrilled Gemstone

A Unique Expression of Nature

Rainbow obsidian forms when volcanic lava cools rapidly, creating natural volcanic glass. Microscopic internal structures interact with light to produce the beautiful iridescent colors for which this material is known.

The combination of its substantial 42.42-carat weight, unusual five-sided shape, and geometric faceting gives this gemstone a distinctive presence.

Ideal For:

• Custom statement pendants
• Contemporary jewelry designs
• Artisan wire wrapping
• Bespoke silver or gold settings
• Gemstone and mineral collections

You will receive the exact gemstone shown in the original photographs.