Top Results for Rare Gems

Harlequin opals are gemstones characterized by a distinctive, irregular play-of-color. These patterns appear as a mosaic of vividly colored patches—typically reds, oranges, yellows, and blues—within the opal’s body. The unique formation process makes harlequin opals exceptionally rare and valuable....

Pink diamonds are rare fancy-color diamonds whose hues can range from faint blush tones to stronger pink, sometimes with purple or orange modifiers. Their color is generally associated with distortion of the crystal structure rather than boron impurities. The former Argyle mine in Australia is close...

Blue diamonds belong to the fancy-color diamond category, with natural colors ranging from pale blue to stronger tones and sometimes including gray or greenish modifiers. Boron incorporated into the crystal structure causes the color in many natural blue diamonds. Their rarity and their combination...

Laurence Graff is a British jeweler and the founder of Graff Diamonds, established in London in 1960. His business is centered on diamond jewelry and includes the sourcing, cutting, and setting of large and rare stones; the house also operates retail boutiques and remains a family business. Graff is...

A Padparadscha sapphire is a unique variety of corundum distinguished by its delicate pink-orange hue resembling a lotus flower. This gemstone’s rarity stems from specific geological conditions during formation, primarily found in Sri Lanka's river valleys. It is valued within the jewelry market for...

Chrysoberyl Cat's Eye, also known as cymophane, is a gemstone variety of the mineral chrysoberyl that exhibits a distinct optical phenomenon called chatoyancy. This effect creates a narrow, bright band of light across the surface of the stone, resembling a feline eye, which is caused by parallel inc...

Green diamonds are highly unusual gemstones formed within regular diamonds through irradiation. This process, typically involving cobalt or beryllium, induces a lasting green color. These rare stones are notable for their unique origin and intense hue. Green diamonds are primarily of interest to col...

Red beryl, also known as bixbite, is a rare variety of beryl distinguished by its intense red color. This gemstone’s coloration arises from trace amounts of manganese within the crystal structure. Primarily found in the Wah Wah Mountains of Utah, it represents one of the world's scarcest gemstones....

Paraiba tourmaline is a rare variety of tourmaline distinguished by its intense neon blue to green coloration. This color arises from copper impurities within the crystal structure and was originally found in Brazil’s Paraiba state during 1989. It's valued for this unique hue, making it desirable fo...

Alexandrite is a rare chrysoberyl gemstone notable for its intense color change. The stone shifts from green to red-purple hues depending on light conditions. This effect, caused by beryllium’s interaction with specific wavelengths, makes it highly sought after in jewelry. It's primarily valued by c...

A conch pearl originates from the Queen conch mollusk found in the Caribbean Sea. These rare gemstones are notable for their unique non-nacreous structure and characteristic flame patterns, which appear as shades of pink. They are primarily sought after by jewelry designers and collectors appreciati...

Demantoid garnet is a rare gemstone belonging to the andradite group. It’s notable for its exceptionally high dispersion, creating brilliant flashes of color when light passes through it. This intense fire makes Demantoid highly sought after by jewelry collectors and gem enthusiasts who appreciate u...

Cat’s Eye Chrysoberyl is a rare gemstone exhibiting cymophane, producing a luminous effect when viewed in darkness. This phenomenon creates a distinct cat's eye appearance, resembling a vertical slit reminiscent of an animal's eye. Historically sourced primarily from Sri Lanka, it’s valued for its u...

Glenn Spiro designs exceptional jewelry blending traditional haute-joaillerie techniques with contemporary approaches. He specializes in incorporating rare gems alongside novel materials such as titanium, creating distinctive pieces. His work is primarily for discerning collectors and individuals se...

Andradite is a calcium-iron nesosilicate mineral species belonging to the garnet group. It forms in contact metamorphic rocks and occurs in several distinct gemstone varieties, including green demantoid, yellow topazolite, and black melanite. The demantoid variety is particularly noted by mineralogi...

Grandidierite is a borosilicate gemstone notable for its intense blue-green color and unique pleochroism – displaying different hues depending on the viewing angle. Primarily found in Madagascar, this rare mineral is highly valued by collectors and gem enthusiasts. It’s often used in fine jewelry wh...

A color-change sapphire is a rare variety of corundum exhibiting a distinctive optical phenomenon. The gemstone’s hue shifts between shades of blue and purple depending on the lighting conditions. This effect, known as the Alexandrite effect, results from vanadium absorption within the stone. It's p...

Color change spinel is a rare variety of the spinel gemstone that exhibits a distinct shift in its primary hue depending on the ambient light source. In natural daylight, the stone typically appears blue or grayish-blue, but it transitions to a deep purple or violet under incandescent indoor lightin...

Benitoite is a rare blue barium titanium cyclosilicate mineral that was first discovered in 1907 in San Benito County, California. It crystallizes in a rare hexagonal crystal system, typically forming distinct, triangular, sapphire-blue gemstones that exhibit strong dichroism. Designated as the offi...

Color change garnet is a rare variety of the garnet mineral group that exhibits a distinct alteration in hue when transitioned from daylight to incandescent lighting. Typically, these stones shift from bluish-green or grayish tones in natural daylight to vivid red or purple under warm indoor light....

Indicolite is the name commonly applied to blue or blue-green specimens of elbaite, a mineral in the tourmaline group. Its color is generally associated with iron, and individual stones can range from pale blue through saturated blue-green tones. Gem-quality material has been recovered in Brazil, Af...

Graff is a British multinational jeweler and watchmaker founded by Laurence Graff in London in 1960. The company controls its entire diamond supply chain, directly managing the sourcing, cutting, polishing, and setting processes. Graff is specifically associated with acquiring and cutting large, rar...

Orange sapphire is a gem-quality variety of corundum whose color ranges from yellowish orange to reddish or pinkish orange. Its color commonly results from trace elements in the crystal, and stones may be heat-treated to alter or intensify their appearance. Some orange-pink sapphires approach the co...

Contra luz opal is a distinct variety of opal known for exhibiting play-of-color only when light is transmitted through the stone from behind, rather than reflecting off its surface. This optical effect makes the internal colors visible primarily when the gemstone is held up against a direct light s...

Chrome tourmaline is a rare variety of elbaite tourmaline that displays an intense, vivid green coloration due to the presence of chromium and vanadium within its crystal structure. It is distinguished from standard green tourmalines by its deeper, emerald-like color and is found almost exclusively...

Purple sapphire is a colored variety of the mineral corundum, distinct from ruby by its specific hue. The gemstone achieves its purple coloration through a combination of trace elements, primarily chromium alongside iron or titanium. Sri Lanka is widely recognized as the primary source of fine, gem-...

Pezzottaite is a rare mineral species recognized for its distinct raspberry-red to pink coloration, often utilized as a collector's gemstone. Chemically classified as a cesium beryllium lithium aluminum silicate, it is closely related to the beryl mineral group but features a unique crystal structur...

Spectrolite is a trade name for a variety of labradorite feldspar found exclusively in Finland, particularly in the Ylämaa region. It is distinguished from other labradorite by its labradorescence, exhibiting a vivid, full spectrum of colors including blues, greens, yellows, and occasionally reds an...

Sphene, formally known as titanite, is a calcium titanium nesosilicate mineral valued as a collector's gemstone. It is distinguished by its exceptional dispersion, meaning faceted stones exhibit a fiery, multicolored scintillation that exceeds that of diamond. Sphene typically occurs in green, yello...