Post by account_disabled on Mar 12, 2024 9:15:16 GMT
One of the most valuable varieties of zircon, and certainly the most popular, is blue zircon . In some cases, this variety of zircon may be known as "starlite", a trade name originally proposed by George Fredrick Kunz, an American mineralogist and vice president of gemology at Tiffany & Co, although the name was never generally adopted and is used with more frequently than before. Other trade names of zircons include "stremlite" and the recently proposed name "cambolite" specifically for blue Cambodian zircon, the world's largest source of zircon variety zircon. Despite the popularity and predominance of blue Zircon vs. other variety Zircon, blue Zircon is rarely found in nature; Overwhelmingly blue Zircon gemstones are unearthed as brown crystals and then heat treated under reducing conditions to produce the beautiful blue hue they are known for. Not all brown Zircon turns blue when heated, only those Zircon crystals with the correct chemical characteristics undergo this change when heated.
Zircons and Zirconiums Zircons and almost all Cambodian blue zircons currently sold on the jewelry market come from the Cambodian province of Ratanakiri in the northeast of the country, an area where a large number of gems are mined; Fittingly, the name "ratanakiri" comes from the Khmer words for "gem" and "mountain," giving a possible English interpretation of "gem mountain" or "land of gems and mountains." Blue zircon has been popular since Victorian times, but large-scale zircon mining in Ratanakiri did not begin until the 1930s, with some of the most productive deposits in Ratanakiri's capital, Banlong, and the Phone Number List nearby settlement of Bae. Srak and its surroundings. from Bo Keo, about 25 kilometers east of the capital. Several zircon mines in Ratanakiri province produce of untreated blue zircon crystals as part of raw material production consisting mainly of zircons of other colors, but these reports are small and therefore not known.
Considered particularly important in the context of the gem trade, these gemstones have never been found to be part of a complete "deposit" of blue zircon; The only place where sufficiently high concentrations of untreated blue zircon have been found is considered a natural blue zircon deposit. The site is in Campania, Italy, among syenite rocks that were once ejected by volcanic activity on Mount Vesuvius. Unheated brown samples, heated rough and faceted gemstones. blue heating Zircon crystals (left) and gemstones (center) from Malawi and raw untreated crystals (right); image: Gemological Institute of America In the final part of the series, learn about the mysterious blue zircon deposits on Mount Vesuvius and recent examinations of stones found there. brown zircon, which turns blue when heated, but the Bae Srak mine is particularly associated with blue zircon, the richest color, while gems from other sources in Cambodia tend to appear lighter when processed with a blue dye; Mining operations at Bae Srak have never reported natural blue crystals.
Zircons and Zirconiums Zircons and almost all Cambodian blue zircons currently sold on the jewelry market come from the Cambodian province of Ratanakiri in the northeast of the country, an area where a large number of gems are mined; Fittingly, the name "ratanakiri" comes from the Khmer words for "gem" and "mountain," giving a possible English interpretation of "gem mountain" or "land of gems and mountains." Blue zircon has been popular since Victorian times, but large-scale zircon mining in Ratanakiri did not begin until the 1930s, with some of the most productive deposits in Ratanakiri's capital, Banlong, and the Phone Number List nearby settlement of Bae. Srak and its surroundings. from Bo Keo, about 25 kilometers east of the capital. Several zircon mines in Ratanakiri province produce of untreated blue zircon crystals as part of raw material production consisting mainly of zircons of other colors, but these reports are small and therefore not known.
Considered particularly important in the context of the gem trade, these gemstones have never been found to be part of a complete "deposit" of blue zircon; The only place where sufficiently high concentrations of untreated blue zircon have been found is considered a natural blue zircon deposit. The site is in Campania, Italy, among syenite rocks that were once ejected by volcanic activity on Mount Vesuvius. Unheated brown samples, heated rough and faceted gemstones. blue heating Zircon crystals (left) and gemstones (center) from Malawi and raw untreated crystals (right); image: Gemological Institute of America In the final part of the series, learn about the mysterious blue zircon deposits on Mount Vesuvius and recent examinations of stones found there. brown zircon, which turns blue when heated, but the Bae Srak mine is particularly associated with blue zircon, the richest color, while gems from other sources in Cambodia tend to appear lighter when processed with a blue dye; Mining operations at Bae Srak have never reported natural blue crystals.