loose colored gemstones

Rarest Color of Gemstone

Gemstone colors play an essential part in their attraction and value, from how attractive a stone looks to its value. Read the Best info about loose colored gemstones.

Gems such as rubies, sapphires, and emeralds are increasingly more affordable, but some rarer colored gemstones remain. An amethyst with a specific depth and intensity of rose violet hue is a rare specimen.

Blue Sapphire

Sapphire is one of the world’s most coveted gemstones, second only to diamond in hardness. Sapphire can be found in various shades of blue ranging from cornflower and royal blue through to pale violet-blue and violet-blue; skilled cutters can orient sapphires to bring out its more vibrant tones while decreasing any greenish tones.

As with rubies, sapphires come in many colors and tones; only the finest and purest specimens qualify as authentic blue sapphires. Deliqa’s impressive collection of blue sapphires from Sri Lanka (known as Ceylon), Madagascar, and Burma meet this criterion.

Padparadscha sapphires are another rare variety of sapphires. As part of corundum, these gems exhibit a striking combination of pink and orange that echoes sunset hues; its name comes from this quality. The most desirable padparadschas combine vivid saturation with soft velvety tones for optimal appeal.

Other rare varieties of sapphire include alexandrite and red beryl. Alexandrite is a unique form of chrysoberyl that changes colors due to trace amounts of chromium; its hue can range from bluish-green in daylight lighting to red under incandescent illumination. On the other hand, red beryl was first discovered in Australia’s Musgrave Ranges.

Blue Tanzanite

Blue tanzanite was, until recently, a scarce gem. A variety of the zoisite mineral, it could only be found in Tanzania near Mount Kilimanjaro’s foothills.

Manuel d’Souza made this remarkable discovery during his search for a sapphire. According to legend, Masai herders led him directly to this spot when lightning strikes lit up their land and scattered gemstones across it – an account that Manuel recounts with great awe today.

Tanzanite is trichroic as emerald, ruby, amethyst, and quartz gemstones. This means it displays three colors simultaneously – most commonly deep blue with violet undertones or vivid lilac-purple hues caused by traces of vanadium and chromium in its chemical makeup. A well-cut tanzanite showing predominantly blue hues is more valuable than those with more prominent red and purple tints.

Tanzanite is a highly prized gemstone due to its rarity and unique qualities, with supply expected to decrease within 20 years, so now would be an opportune time to purchase this gemstone before its price increases further. Make sure an accredited gemologist professionally grades any prospective purchase; some grading charts may combine hue, saturation, and tone grades into one grade while others may provide more granular details about each characteristic separately; additionally, look out for one bearing an “heirloom” label to ensure its quality gemstone status.


California’s State Gem, benitoite, is an exceptional stone from only one location with its rare crystal structure and exceptional beauty. Discovered by an unknown farmer turned prospector from Benito County who later discovered Benitoite mining, it demonstrates American ingenuity and perseverance at work.

Benitoite was initially discovered in 1907 by a prospector near San Benito, California. Initial opinions regarding its identity ranged from volcanic glass to spinel and sapphire; later, it was established that its light dispersion index and refractive index distinguished it as its mineral species – benitoite was officially named and recognized.

Benitoite is an opaque blue-to-purple mineral with a hexagonal crystal structure. It displays color zoning and birefringence, while rough benitoite can be transformed into pink and orange tones by heat treatment.

Benitoite is mined at the Benitoite Gem Mine in San Benito County and is considered a precious stone. Gems cut from benitoite can range in size from tiny fractions of a carat up to several carats; the largest flawless benitoite found was seven carats, discovered in 2010.

Benitoite is revered for its powerful metaphysical properties, such as shielding, psychic development, and communication on both psychic and more mundane levels. Benitoite makes an excellent meditation stone and protecting stone for personal protection – its use may enhance one’s ability to manifest positive change.


Grandidierite is one of the rarest gemstones in existence. Ranging in color from greenish blue to dark blue hues with strong pleochroism – that means two or even three different hues depending on your viewing angle – Grandidierite makes an attractive and eye-catching stones, especially as its strong pleochroism makes it display two or even three hues depending on viewing angle – creating an intriguing gemstone! Grandidierite can also be quite hard, boasting a Mohs scale hardness rating of 7.5 that makes it resistant to scratching. In contrast, its two directions of cleavage can make cutting difficult due to being difficult for gem cutters when shaping.

Since 1902, most grandidierite discovered has been opaque, although gem-quality material may be translucent and cut into cabochons to look similar to jade when cut. Recent discoveries of transparent grandidierite in Sri Lanka and Madagascar have produced beautiful faceted pieces.

Grandidierite gemstones are rare and valuable commodities, commanding up to $500 per carat, depending on quality and size. While this might seem high initially, remembering its rare mineral properties requires extra caution when purchasing one of these gems. Do your research first to ensure it is genuine – try applying nail polish remover to cotton balls or Q-tips, then rub against your grandidierite; if any spots appear where acetone has rubbed onto it, it indicates the non-authenticity of this grandidierite stone!

Read Also: Gymshark Review – Flex High Waisted Leggings