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Red color diamonds indicate fire, intensity, and passion. Such fiery stones resembling rubies are mostly spinels that are categorized in the top four fine jewel sections, where the Hope Spinel sale for US$1.55 million, in 2015 created a record at Bonham’s auctions. These are the most pre-eminent colored diamonds known for incomparable luster, hardness, and resolution. Expert gemologists claim some of the most brilliant rubies are actually spinels, which can be found in the European state crowns, rings or rare classic pieces of jewelry.
The Hope Spinel is ranked as exceptional and was bought from Tajikistan. It is a 50.13 carat stone that was part of Henry Philip collection, who died in 1839. Most such large gemstones are transparent. The Russian imperial crown held the 398.72-carat spinel, which was acquired through the trade negotiations with China, in 1676. It became a part of the crown in 1762. Even the Australian empire's imperial crown had spinel embedded, which was made in 1602 for the Roman Emperor.
Comparison of the chemical composition and color variants with rubies and other gemstones
Chemically, it contains MgAl?O? (rubies are just Al?O?). Some of the unusual types of stones have the cubic structure, which can be found in other colors like rare blues, violets, and black. The refraction property of the stone is distinctive in comparison to many other gemstones, which leads to special luminance.
The pinkish red variety has a tremendous demand in the engagement rings, where they can be recognized for the unique delicate beauty that is different from pigeon red ruby tone.
Basically, the stone is characterized by an octahedral structure having a single refractive index that offers clarity. Dramatic colors can be found in the category at affordable prices. Velvety blue hues resemble the Sri Lankan sapphires and are some of the most affordable alternatives to Kashmir sapphires.
Intense pink is in demand as it has the same color tone as sapphires. Other colors include steely grey and purple-blue. These can be found in the form of a round pebble.
Christie Red Gemstone sale in 1997
In October 1997, Christie started the Indian jewelry sale in London where the luxury traditional gemstones were exhibited, and the sale featured over 100 lots, which included stones from the Mughal Empire, where spinels were the most expensive. Some such stones had names of emperors engraved to symbolize their eminence. The large rubies and spinels with special tones were either joined in beads or embedded in the precious metals. The exhibition included some of the pieces from the Mughal treasure which was, in 1739, looted by the Persian ruler. The 877.23 carats 11-bead spinel set held by Mughal Emperors had names of Mughal emperors Jehangir, Akbar, and Shah Jahan engraved, and the set was sold for $1,428,030.
To find out more about spinel investment, check 99 Alternatives at (http://www.99alternatives.com).
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