The Black Star of Queensland, named after its nature and place of origin, is a 733-carat (146.6 g) black sapphire, and was the world's largest gem quality star sapphire until The Star of Adam was discovered. The stone was reportedly discovered by 12-year-old Roy Spencer in the mid-1930s in the Queensland gem fields known as the Reward Claim near Anakie, Queensland.
Roy showed the stone to his father, Harry Spencer, one of the pioneering miners of the central Queensland gem fields, who assumed that it was merely a large black crystal. Not realising the value of the stone with its rough exterior, the family used it as a doorstop in their home for over a decade, until Harry took a closer look and discovered the gem hidden within.
The Black Star sapphire is an oval-shaped gemstone cut as a cabochon like all other star sapphires. The center of the star is much bigger and brighter than normal star sapphires. The bright six-rayed star is set in a completely black background. The beauty of the stone is further enhanced by its white gold setting. The large black stone is surrounded by a row of 35 pear shaped smaller white diamonds.
As with all star sapphires the star moves with changing angles of illumination and observation and belongs to the group of minerals known as corundum, a crystalline form of aluminum oxide (Al2O3).
The star effect in star sapphires is caused by microscopic inclusions, mainly Rutile, aligned in a threefold pattern inside the stone that reflects the light entering the stone through its dome shaped face into a six-rayed star pattern.
In 1947, Harry Spencer agreed to sell the stone to Armenian-born jeweler Harry Kazanjian for $18,000, with which Spencer built a new house for his family. Harry Kazanjian spent two months studying the stone before making the decision to cut it, sacrificing over 400 carats to reveal the six pointed star.
The stone was renowned for bringing its owners luck. Since the purchase in 1947, the business of the Kazanjian family boomed. The Kazanjian family held the black gemstone for many years in spite of offers to purchase the stone.
The gemstone was loaned to the Natural History Museum of the Smithsonian Institution in Washington DC, in 1969 and in 1971 some brief television fame when the stone featured around the neck of Cher. Since this time in spite of a small number of charity events the stone has rarely been seen in public.
Eager to fulfill a childhood dream, with an overwhelming desire to own the stone, jeweler and artist Jack Armstrong, along with his wealthy girlfriend Gabrielle Grohe, convinced the Kazanjian family to sell the stone to fund a scholarship at the gemological institute.
A lengthy, controversial, bitter, international ownership battle ensued. Marked by the New York Post, which ran a story with the headline "Heavyweight Gem $cuffle." The legal dispute quietly ended outside of court in a confidential agreement. According to court documents, Armstrong agreed to pay $500,000 within three months to buy out Grohe.
Failing to come up with the money, a judge entered a final ruling in favor of Grohe and Armstrong lost his ownership rights. The Black Star of Queensland once again sits in obscurity, with its owner in Switzerland.
Video Black Star of Queensland
References
Source of article : Wikipedia
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