Bb: Hyalite Opal From Colorado - Bright Green Fluorescent
Item History & Price
| Reference Number: Avaluer:5270914 |
Species: Opal var. Opal-AN (Hyalite), ChalcedonyLocality: Del Norte Thunder-egg Beds, Saguache Co., ColoradoSize: Miniature/small cabinet - 5.7 x 3.9 x 1.9 cmWeight: 38.2 gNumber: 1430Details: From a noted thunderegg locality in southernColorado, this specimen brings lots of charm The hyalite occurs as a thin, pearly-iridescent layer over botryoidal chalcedony on rhyolite. It fluoresces a beautiful bright lime green under shortwave UV, and ...deep green with a Convoy/Nichia 365nm longwave lamp.
NOTES ON ULTRAVIOLET:The higher quality the UV source, the better fluorescent minerals look. Key factors include lamp wattage, UV spectrum and filtration, as well as distance from lamp to specimen. For best results with any UV source, observe against a dark, non-fluorescent, non-reflective background, in complete darkness with eyes adapted. The photos here are taken using UV Systems SuperBright II (shortwave, midwave, longwave-350) and Philips BLB (longwave-370) lamps, metered and exposed to show fluorescent response to best advantage.
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International customers: * US Post Office policy makes economical shipping a challenge. Price increments for packages are as follows: First class up to 225 g, then 225-900 g, then 900-1350 g (Canada only). Higher weights require Priority Mail. I always try to make shipping as cost-effective as possible. Please send a message so we can work things out.* Please note that import duties, taxes or charges are not included in the item price or shipping fees and are the buyer’s responsibility. While most countries do not charge duty on mineral specimens, you should check in your own country to be sure before bidding.
