A world of wonder,
held in a single gem.
Depth of color, movement of light, and a character never repeated. At Yubido Gem, we select stones whose beauty speaks beyond rarity alone.
Chosen not simply for rarity, but for beauty.
Limited production is only one part of a rare gem’s value. We look for purity of color, light that seems to rise from within, and a character that comes alive in a jewel. Decades of experience with colored stones guide us in recognizing the individual beauty of every gem.
YUBIDO GEM JEWELRYDemantoid
Garnet
Among garnets, demantoid stands apart for its exceptional dispersion. Fine flashes of spectral color rise through its deep green body. Its name means “diamond-like,” a fitting tribute to its remarkable brilliance.
Chromium plays an important role in its green color, while iron may contribute a yellowish tone. The same trace element can create red in ruby and green in emerald or fine green jadeite, depending on the host crystal. Behind colors that have fascinated humanity lies the subtle chemistry of nature.
In some stones, fine needle-like inclusions spread like a horse’s tail—a distinctive record of natural formation. Yet a beautiful demantoid should be judged not by inclusions alone, but by the harmony of color, transparency and brilliance.
- Green that remains lively rather than dark
- A balance of brilliance and transparency
- Inclusions considered as part of the gem’s individuality
YUBIDO GEM JEWELRYHaüynite
Even a tiny haüynite can command attention with its electrifying blue. Best known from Germany’s Eifel region, gem-quality material is extremely limited, and transparent stones of notable size are rarely encountered.
Its appeal is more than depth of color. We seek blue that does not close into darkness, but opens into a clear cobalt brilliance in the light—a concentration of color and transparency strong enough to make a small stone the focus of a jewel.
- Intense blue that still reveals transparency
- Crisp, vivid color even in a small stone
- Designs that let the blue come alive beside diamonds
BRAZIL ORIGIN · YUBIDO GEMParaíba
Tourmaline
Neither simply blue nor green, Paraíba tourmaline seems illuminated from within. Its distinctive appearance is associated with copper-bearing coloration.
Following its discovery in Brazil, copper-bearing tourmaline was found in Nigeria and Mozambique. In 2026, GIA and Gübelin Gem Lab confirmed Ethiopia as a new source. We respect the beauty of each stone, regardless of origin.
At the same time, Yubido Gem regards the dense, almost fluorescent blue seen in the finest Brazilian material as a special benchmark. Origin alone never determines value; we assess saturation, brightness, transparency, inclusions and, above all, the color expressed by the individual gem.
- Vivid blue to greenish blue without darkness
- A neon presence that remains visible in softer light
- Origin, laboratory information and visible beauty considered together
Concept image expressing conch pearl color and flame structure. To be replaced with an actual specimen photograph.
Conch Pearl
A natural non-nacreous pearl formed by chance within the Queen conch of the Caribbean. Unlike conventional pearls, it has no nacreous layer, and is admired for soft tones of pink, salmon and orange together with a porcelain-like surface.
Its distinctive pink and flame-like surface structure are central to its beauty and value. Pearls with a clearly visible flame pattern are especially prized. We examine color, shape, surface condition and the definition of the flame structure from every direction.
- A distinctive, living pink that draws the eye
- A clearly visible flame structure
- Jewelry design that honors its natural form
A gem worth remembering.
No two rare gems share exactly the same expression. We invite you to compare their color and light in person—qualities that photographs and laboratory reports alone cannot fully convey.
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