Mexican hyalite opal nodule with a soft honey color and strong UV reaction. Hyalite is a transparent to translucent form of opal, and material like this is especially popular with collectors for its fluorescence under ultraviolet light. From an old collection of important roughs
4.536 grams / 22.680 carats / 17.9 x 16.3 x 14.1 mm / clean
Estimate: $250 - $275
