Opal-AN (Hyalite Opal) (fluorescent)

Item Description

Please note that for a long time this material was referred to as "Hyalite" Opal, but is now listed as a variety of Opal called Opal-AN. It is specifically an amorphous (often colorless) form of Opal that is found in spherical aggregates, that are often intergrown or stacked with a "bead"-like appearance. The listing on mindat.org states that "The "A" in the name stands for amorphous; the subscript "N" is to imply its structure is network-like similar to silica glass; however, it still contains about 3-8% water". One of the great aspects of this specific material is that unlike a lot of other Mexican Opals (and Opal in general for that matter), this particular Opal is incredibly durable and strong, and doesn't fall apart, crumble or chip apart when cut and / or polished. This is significant because these gems will make great centerpieces for jewelry! Lastly, like most Hyalites this piece shows a brilliant green fluorescence under SW UV light as you can see in the second photo. Don't miss out on this beautiful and rare gem of this well-known Opal variety. The stone is completely colorless with an "Oval Brilliant" cut and near eye-clean clarity.