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Goshenite is the transparent, colorless, alkali-bearing pure beryl that was discovered in Goshen, Hampshire County, Massachusetts. The Lily Pond mine in a pegmatite near a small lake was the source of crystals accompanied by other pale greenish-blue, bluish-green, yellowish, pink, and white beryl crystals.... (1999) Complete Story
Yellow-green beryl has achieved 'desired gem' status with consumers just within the last few years. Museums were eager to acquire spectacular specimens, while connoisseurs sought it for their collections. However, fashion trendsetters ignored it. As in aquamarine, the iron incorporated into its chemical structure is responsible for the color..... (1999) Complete Story
Andalusite, kyanite, and sillimanite all contain identical amounts of aluminum, silicon, and oxygen, combined with other trace elements. I find it intriguing to note the differences in how the chemical formulas for these three minerals are expressed by many well-known authorities on gemstones. That list includes.... (2003) Complete Story
Staurolite! Why would one of the most ordinary, patently unattractive minerals, used as a religious talisman and a good luck charm for centuries, be, in its transparent faceted form, a much sought after collector's gem? Rarity! Seldom do the dark reddish-brown or yellowish-brown transparent crystals occur in sufficiently light tones and sizes to warrant faceting.... () Complete Story
Opal is a fascinating gemstone with an ancient history. Pliny the Elder gives an eloquent description of opal, comparing its many colors to that of the finest of ruby, emerald, sapphire, topaz, and amethyst. Romans prized opal so highly that one citizen of the highest rank suffered permanent exile for refusing to relinquish ownership of a magnificent hen-egg sized opal to the emperor..... (2000) Complete Story
