Rainbow Obsidian - Oval

This mesmerizing Rainbow Obsidian cabochon is cut into a substantial 30mm by 22mm oval with a dramatic, extra-high 10mm dome. At first glance, the stone appears to be a sleek, sophisticated black, but when caught in the right light, it reveals its hidden magic: shimmering concentric layers of iridescent color. These subtle "rainbow" rings—often appearing in hues of violet, green, and gold—are caused by tiny inclusions of magnetite or air bubbles trapped during the volcanic cooling process.

The deep 10mm dome is specifically designed to enhance the depth of the iridescent "eye," making it a spectacular choice for a high-profile statement ring or a focal pendant that commands attention.

Key Properties & Care

Obsidian is a natural volcanic glass. While it is incredibly smooth and holds a mirror-like polish, its glassy nature means it should be handled with specific care:

• Mohs Hardness: Rainbow Obsidian has a hardness of approximately 5 to 5.5 on the Mohs scale. Being a volcanic glass, it is softer than quartz and can be scratched by everyday materials or harder gemstones.

• Cleaning: Gently clean with lukewarm water and a very soft, lint-free cloth. Avoid any abrasive cleaners. A mild soap solution is safe, but ensure the stone is dried carefully to prevent streaks on its reflective surface.

• Maintenance:

  • Avoid Chemicals: Keep the stone away from harsh household chemicals, detergents, and perfumes, which can affect the surface luster.

  • Avoid Impact: Obsidian is brittle and has a conchoidal fracture (similar to glass). It can chip or shatter if dropped on a hard surface or subjected to a sharp blow. Protective settings are highly recommended.

  • Storage: Always store your Rainbow Obsidian separately in a soft silk or velvet pouch to protect the polished dome from being scratched by harder stones or metal jewelry components.

All photos are for indication only. We cannot guarantee that your screen is displaying the actual colour or refraction of the gemstone.