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Source: Rob Lavinsky, – CC-BY-SA-3.0 Purple Spinel In astrology, tourmaline is a birthstone for Leo. Though the pink variety was specified, all colored tourmalines are commonly regarded as birthstone for October. These purple crystals come from the species of tourmaline called elbaite, including the highly valuable Paraiba tourmaline. Source: Rob Lavinsky, – CC-BY-SA-3.0 Purple TourmalineĪ gemstone found in all the colors of the rainbow, tourmaline also occurs as purple stones. In astrology, sapphire is the birthstone of Taurus. While a traditional birthstone for April, sapphire in general is the modern birthstone for September. There also exists a color-change variety of sapphire, which shifts from blue or green outdoor, to a violet stone under an incandescent light indoor. This purple jewel comes from the mineral corundum, all varieties of which are called sapphire except for red, which is known as ruby. Though most popular in blue, sapphire also occurs as purple stones.

Source: Rob Lavinsky, – CC-BY-SA-3.0 Purple Sapphire

In astrology, opal is a birthstone for Libra. Opal in general is the birthstone for October. When cut to include only this play of colors, the opal stone can appear entirely purple. The purple is found mostly in the flash or play of colors found on the body. While most valuable in black and most common in white, opal also occurs as purple stones. Source: Rob Lavinsky, – CC-BY-SA-3.0 Purple Opal In astrology, garnet is Aquarius birthstone. Garnet in general is the birthstone for January. This color-changing garnet is among the most expensive of purple gemstones with prices of up to $3,000 a carat. Blue garnet, the rarest of all garnets, itself turns purple under an incandescent light. The purple crystals come from the varieties of garnet called pyrope and spessartine. While most popular in red, garnet also occurs as purple stones. Source: WesternDevil via Wikimedia Commons Purple Garnet Formerly mistaken to have been a variety of spinel, the purple stone was identified to be a different mineral by Richard Taaffe, after whom the gemstone was named. Taaffeite is one of the rarest gemstones in the world, and is accordingly among the most valuable of purple gemstones at around $6,000 a carat. Source: Rob Lavinsky, – CC-BY-SA-3.0 Taaffeiteīeside red, taaffeite is the first and only mineral that was discovered after the stone was cut and faceted. Alexandrite is a traditional birthstone for June. A rare mineral, the color-changing gemstone is the most valuable of purple gemstones next to diamond with prices of up to $45,000 per carat. Beside red or pink, alexandrite can also turn into a purple stone at night under an incandescent light, while appearing green at daytime. Source: The Hope Diamond via Wikimedia Commons An alexandrite crystal at night AlexandriteĪlexandrite is a color-changing gemstone from the mineral chrysoberyl. In astrology, diamond is the birthstone of the Aries zodiac sign. Diamond in general is the birthstone for April. Like the rest of their kind, these violet and purple rocks are the hardest of minerals, and display extraordinary brilliance owing to their high refractive index, making them the most expensive of purple gemstones, with prices of up to $1.5M a carat. While most popular for its white variety, diamond also occurs as violet and purple jewels, which are among the rarest of diamonds.