Some have relief areas. Insurance included in price. Truly a unique material.
Very collectible and very desirable stone for jewelry making or collect as a polished specimen.. Electric Opal ™ a Hyalite Opal that is photochromic ( UV sensitive). When it meets Sun light it turns a lime green color that is a marvel to experience since it Pops-on. From a one time find is Zacatecas Mexico cabochon 14- 32x49x10mm Thicker opal coverage, all fluorescent in variations shown under UV light. The view is through all opal top surface.. All is hyalite, some area are fluorescent in sunlight.
Some have relief areas. Insurance included in price. Truly a unique material.