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Fancy Colored Sapphire belongs to corundum, which is the hardest natural mineral on earth besides diamond, the basic chemical composition is alumina, and the hardness is 9, second only to diamond.
Because the colors are so rich that people feel like they have entered a dreamy fairy tale world, Hong Kong people like to call them fancy sapphires.
However, there are also troubles with many colors, such as colored gemstones of the same color and shape all look similar, which makes people always wonder and cannot be identified. Today I will teach you how to distinguish a colored sapphire from other gemstones.
Pink sapphire vs pink spinel
Pink sapphire
The biggest difference between pink sapphire and spinel is the pleochroism. Natural sapphires are all dichroic and pink sapphires will appear different shades of pink when viewed from the front and side of the gemstone with a beamsplitter, while spinel is not pleochroic and therefore the color is the same regardless of which direction you look at.
Pink sapphire ring
Pink spinel ring
Differentiation: The beamsplitter looks at the different directions of the front and side of the gemstone, whether there are multiple colors.
Yellow sapphire vs yellow diamond
The biggest difference between diamonds and sapphires is the index of refraction, so turning the gemstone to see if the gemstone pavilion will sparkle with colorful fire is the key to identifying them.
Yellow sapphire ring
Yellow diamonds
Distinguishing method: Turn the gemstone left and right under the light source to see if it flashes fire.
Purple sapphire vs amethyst
The biggest difference between purple sapphire and amethyst is that natural amethyst often shows bands of yellow color, which is definitely not the case in purple sapphire.
Purple sapphire ring
Amethyst ring
Differentiation: Look inside the gemstone with a tenx magnifying glass to see if there is a color band.
Green sapphire vs green tourmaline
The biggest difference between green sapphire and green tourmaline is that tourmaline has a strong birefringence, and obvious faceted angular ghosting can be seen when viewed with a magnifying glass, while green sapphire has no birefringence, so it cannot be seen no matter how you look at it.
Green sapphire
Green tourmaline earrings
Differentiation: Look inside the gemstone with a tenfold magnifying glass to see if there is a faceted double shadow.
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