Golden sheen sapphire
Golden Sheen Sapphire: The Enigmatic Gemstone of Kenya
The Golden Sheen Sapphire is a fascinating gemstone variety of the mineral corundum, an aluminium oxide (α-Al2O3). Known for its captivating metallic golden hue, this unique sapphire also exhibits variations in color, including brass, copper, bronze, and occasionally metallic blue, green, or yellow. An exceptionally rare variation can even display a striking metallic red color.
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The name “Golden Sheen Sapphire” is often shortened to “Gold Sheen Sapphire,” and both terms are used interchangeably in the gemstone world. Unlike typical transparent sapphires, the Golden Sheen Sapphire is characterized by its mostly opaque appearance, which is the result of iron and titanium inclusions within the gemstone. These inclusions give it an opalescent quality, making it similar to opal rather than the clear, transparent nature of most sapphires.
The prominent inclusions found in Golden Sheen Sapphire are ilmenite, rutile, hematite, and magnetite. Hematite, in particular, often forms striking geometric hexagonal patterns within the gemstone crystal, adding to its aesthetic allure. These unique inclusions create the mesmerizing sheen effect that is characteristic of this type of sapphire.
Discovery and Origin
The Golden Sheen Sapphire was first identified and described by the GIA (Gemological Institute of America) testing laboratory in Bangkok in 2013. Testing confirmed that these gemstones were indeed genuine sapphires, and their color was described as brown with a distinctive golden sheen effect. This intriguing variety of sapphire has only been found in one known source: an undisclosed mine in the northeastern region of Kenya, close to the Somali border. The remote location adds an element of exclusivity to these rare gemstones.
Color Change Phenomenon
Golden Sheen Sapphires possess a remarkable color-changing property that varies under different lighting conditions. Depending on whether they are exposed to warm, cool, or direct sunlight, the gemstone’s hue can range from subtle to dramatic shifts in color, making it an attractive choice for jewelry that offers a dynamic visual experience. This unique feature further distinguishes it from more conventional types of sapphire.
Asterism and Cabochon Cuts
All Golden Sheen Sapphires that are cut en cabochon will exhibit some degree of asterism—a star-like pattern—when viewed under direct light. This natural optical phenomenon enhances the visual appeal of the gemstone and is another characteristic that draws collectors and gemstone enthusiasts to it. The asterism effect is more pronounced in gems with a high concentration of hematite or rutile inclusions.
Treatment and Care
Golden Sheen Sapphires are untreated, maintaining their natural beauty without the need for enhancement. Attempts to heat-treat these gemstones have been unsuccessful, often diminishing the distinctive golden sheen effect and reducing their aesthetic appeal. As such, these sapphires are typically left in their natural state to preserve their unique characteristics. Proper care should be taken to avoid harsh chemicals or extreme temperatures, which could damage the gemstone.
Corundum and Its Gem Varieties
Corundum, the mineral that forms Golden Sheen Sapphire, is a crystalline form of aluminium oxide that often contains trace amounts of iron, titanium, vanadium, and chromium. It is a rock-forming mineral that appears in two primary gem varieties: ruby and sapphire. Rubies are red due to the presence of chromium, while sapphires can exhibit a range of colors depending on the types of trace elements present in the crystal structure. The Golden Sheen Sapphire, with its unique metallic luster, represents an extraordinary addition to the family of corundum gemstones.
Golden Sheen Sapphire Jewelry
Golden Sheen Sapphires are increasingly popular for use in custom-made jewelry, including engagement rings, necklaces, stud earrings, bracelets, and pendants. Their natural opacity, striking patterns, and shifting colors make them an excellent choice for those looking for distinctive and eye-catching pieces. If you are interested in acquiring a bespoke piece of jewelry featuring this rare gemstone, please contact us for a quote. Our gem shop offers a range of natural sapphires and custom jewelry services to create the perfect accessory for any occasion.
Golden Sheen Sapphire, from Kenya
Our gem shop offers a selection of natural sapphires, including the rare Golden Sheen Sapphire. Whether you are a gemstone collector or looking for a unique addition to your jewelry collection, we provide a wide variety of sapphires, including custom-made pieces that cater to your specific needs and preferences.
