Rare Large Crystal Opal Mintabie, South Australia, Australia The opal deposits of Mintabie have long been depleted with no new production emerging. The present example was set aside many years ago by the miner who could not bear to part with it earlier. Simply contour polished to reveal its beauty, a vibrant electric green blue pinpoint play-of-color are seen to dance across the surface. Such a notable piece would, no doubt, create a fine pendant.
Rhodolite garnets should be differentiated from its darker cousins red-like almandine and pyrope. The mixture of red and violet in rhodolites is highly desirable and popular. Purple or purple-red is the most expensive and sought color for rhodolite and large clean transparent stones are uncommon and valuable. More @ www.multicolour.com and #gemstones
Very Fine Black Opal from Lightning Ridge, Australia. Vivid and very "present", this fine gem opal displays predominantly red play-of-color with spectral broad flashes of green, orange, yellow and blue, with true black potch to the reverse of the oval cabochon. This is as fine a stone for the serious collector as can be desired. Weighing approximately 10.39 carats and measuring 16.5 x 13.0 x 6.5mm Estimate: US$ 60,000 - 80,000 (£39,000 - 52,000/€46,000 - 62,000)
Tanzanite, one of December's birthstones, is relatively new to the colored stone galaxy. As the most common story of the tanzanite mining boom goes, in 1967 a Masai tribesman stumbled upon a cluster of highly transparent, intense blue crystals weathering out of the earth in Merelani, an area of northern Tanzania. He alerted a local fortune hunter named Manuel d’Souza, who quickly registered four mining claims.