Daylight fluorescent hyalite opal from Zacatecas, Mexico. This specimen fluoresces brilliantly under UV light as well as in natural daylight! The daylight fluorescence is not as intense as under a UV light, but it still brings out the beautiful green color! It's best in diffused/shaded sunlight. This gem specimen measures 1 3/8" x 1 1/8" x3/4" and weighs 16.54 grams.
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