Hyalite opal on smoky quartz from Namibia, showing botryoidal hyalite with a glassy surface and strong neon green fluorescence under UV light.
Hyalite is a hydrated opal that is typically clear to pale yellow in normal light, but many specimens fluoresce an intense green due to trace uranium in the opal structure. Paired with dark smoky quartz, the contrast is dramatic and makes this a standout display specimen in both daylight and UV
41.2 x 25.7 x 20.6 mm
Estimate: $165 - $175