Dow Harris

Mon, 20 Mar 2017 22:15:09 +0000

The 14.02-carat Spinel from Sri Lanka is exceptional for its intense violet-blue color. Spinel is a magnesium aluminum oxide and forms when impure limestone is altered by heat and pressure. They are commonly found in occurrence with corundum (ruby and sapphire) and have historically been confused with each other due to their many similarities. Both minerals are hard, yield durable gems, and form in a range of colors.The major sources of spinel gemstones are Burma, Sri Lanka, and Thailand.

    Gem quality sphalerite is a rare collector stone. The mineral is usually nearly black in color but is occaisionally found in transparent pieces of an orange or yellowish brown hue. Clean pieces are extremely rare. More @ www.multicolour.com and #gemstones

    Red Sapphire (Berylium treatment), 1.94cts, Oval, Songea, Tanzania. Beautiful color, excellent cut.

    Outstanding Trillion Tanzanite Gemstone (4.35) 12x12 mm Tri-Cut Rated: 5 / 5 based on 5 customer reviews $760 In stock Product description: The deep blue of the tanzanite is fantastic, and runs from u

    Purple Red Sapphire, 1.34cts, Oval, Madagascar. More @ www.multicolour.com and #sapphire 1 repin

    13 2 Ct 16 4x12 5mm VVS Natural Bi Color Oval Ametrine | eBay

    Yellow sapphire weighing 193.86 carats.

    Pure spinel is colorless, but impurities give rise to a range of colors, most typically pink or red, but also purple, green and blue. Spinel is a magnesium aluminum oxide and forms when impure limestone is altered by heat and pressure. They are commonly found in occurrence with corundum (ruby and sapphire) and have historically been confused with each other due to their many similarities.

    Interestingly enough, distinguishing spinel from ruby actually gave birth to the science of gemology. But spinel is not only the greatest ruby imposter, it also comes in a range of beautiful pastel shades, including pink, purple, orange and blue. And here we have for you a seductive lavender Spinel cushion weighing 2.41 cts from Tunduru, Tanzania. With a hardness of 8 and no cleavage planes, spinel is a tough and durable gemstone suitable for any kind of jewelry.

    Benitoite - In 2007, the owner of the Benitoite Gem Mine discovered a near flawless crystal weighing just over 34 carats. The crystal was faceted into 4 gemstones, the largest of which is this beauty. This is the 4th largest faceted VVS or better Benitoite for the species. Weight: 8.06 ct., Origin: San Benito County, California USA, Size: 13.82 mm x 10.44 mm x 7.35 mm, Color: Dark Blue, Violet, Shape: Oval, Modifed Brilliant Cut, Treatment: None, 100% natural

    Dazzling Cambodian Precious Blue Zircon Faceted Gemstone, Pear Cut, 6.2 carats on Etsy, $2,302.00

    An amazing Indicolite Tourmaline weighing 3.13cts from the Malapa mine in Tanzania.

    Indian Alexandrite under sunlight. , Superior brilliance, and excellent clarity and although the color change is not strong, alexandrites from Andrapradesh are well known for their beautiful daylight color. More @ www.multicolour.com and #gemstones #alexandrite