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Demantoid is the green gemstone variety of the mineral andradite, a member of the garnet group of minerals. Andradite is a calcium- and iron-rich garnet.

MdMaya Gemsfrom MdMaya Gems

Fine Blue Aquamarine. Oval cut. 5.87 ct

Genuine Aquamarine Gemstone . Fine Aquamarine, stunning color and cut, medium rich blue color, maximum brilliance, perfect clarity, excellent proportions and symmetry. Oval cut. 5.87 ct.

Demantoid Garnet Jewelry Sale | Vintage Russian Demantoid Pendant - Brooch

Marcus & Co., Necklace, 1900 • Gold, natural pearls, demantoid garnet, enamel • Courtesy of Siegelson, New York

An opal, demantoid garnet and half pearl braclet. The bracelet designed as five rows of collet-set cabochon opals, between square openwork

Spectrolite is a trade name referring to a rare variety of labradorite, a member of the plagioclase feldspar group.

An Impressive Antique Russian Siberian Amethyst and Demantoid Garnet Rose Gold Pendant Necklace made in Moscow between 1908 and 1917