And a natural Precious Australian Black (blue body) Opal with a fire play of colors (opal mined at Lightning Ridge, Australia). The Opal is vividly glowing and exhibits brilliant flash. The blue matrix displaying electric play-of-color invoke images of flame of cobalt-blue. And bright neon splashes of intensive green with. Of all the hues of the rainbow. That can be seen as the opal moves. (refer to the video). This item came from an estate’s private collection. Size: 7 (on a ring mandrel). Face of the ring height/width: 14×12 mm. Not large, exquisite pinky ring. Weight: 4.5 grams. Stone: 100% Natural Australian Black Fire Opal. (verified solid Sterling Silver). Markings: Signed/ Hallmarked (old/ illegible). Excellent vintage condition with warm vintage patina to the silver. The photos were enlarged to present this item to you in the highest details, Items will appear larger than what they are. Please refer to size, weight, and measurements. Also, to realize the size, please see the pictures. On the hand and next to a dime coin.