Gemstones
Loose stones for setting and repair work. Cabochons and faceted stones in genuine, lab created, simulated and assembled material, alongside diamonds, moissanite and cultured freshwater pearls. Round, oval, marquise, pear, emerald, heart, cushion, square and trillion shapes in calibrated millimeter sizes from 1 mm up. Filter by stone, shape, size and color to match an existing mounting.
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Round Faceted Imitation Alexandrite
Otto Frei5.0 / 5.0
1 Review
This Alexandrite simulant is crafted from lab-created synthetic purple corundum, displaying a distinctive greyish-purple hue. With a hardness ratin...
View full detailsRound Genuine Amethyst Cabochon
Otto FreiPrized since antiquity, amethyst carries one of the most storied histories in the gem world — early Greeks believed its rich purple hue could ward ...
View full detailsRound Faceted Genuine Amethyst
Otto Frei5.0 / 5.0
1 Review
Amethyst is the most popular and valuable member of the quartz family, prized for its distinctive purple, wine-like color. According to early Greek...
View full detailsRound Charoite Cabochon
Otto FreiCharoite is a striking opaque purple gemstone featuring swirls, veins, and patches of black, gray, white, and brownish-orange. Prized for its drama...
View full detailsOval Genuine Amethyst Cabochon
Otto Frei5.0 / 5.0
1 Review
Amethyst has captivated gem enthusiasts and jewelers for centuries — early Greeks believed its rich purple hue could prevent drunkenness, lending t...
View full detailsRound Faceted Genuine Iolite
Otto FreiIolite takes its name from the Greek word for violet, and it earns that distinction with a vivid violet-blue color that immediately draws the eye. ...
View full detailsRound Faceted Imitation Amethyst
Otto FreiThis Round Faceted Imitation Amethyst is composed of a lab-created synthetic spinel doublet, exhibiting a light to medium purple color that mimics ...
View full detailsRound Purple Mosaic Turquoise Cabochons
Otto FreiMosaic Purple Turquoise cabochons offer a striking visual appeal, combining the rich color of dyed Kingman American turquoise with an intricate bro...
View full detailsOval Charoite Cabochon
Otto Frei5.0 / 5.0
1 Review
Charoite is a striking opaque purple gemstone featuring swirls, veins, and patches of black, gray, white, and brownish-orange. Found exclusively in...
View full detailsOval Purple Mosaic Turquoise Cabochons
Otto FreiMosaic Mohave Purple Turquoise cabochons offer a striking combination of rich purple hues and warm bronze matrix. Crafted from Kingman American tur...
View full detailsPear Faceted Imitation Alexandrite
Otto FreiThis Alexandrite simulant is crafted from lab-created synthetic purple corundum, displaying a distinctive grayish purple color. With a hardness of ...
View full detailsOval Faceted Imitation Alexandrite
Otto FreiThis Alexandrite simulant is crafted from lab-created synthetic purple corundum, displaying a characteristic grayish purple color. With a hardness ...
View full detailsHeart Faceted Imitation Alexandrite
Otto FreiThis alexandrite simulant is crafted from lab-created synthetic purple corundum, displaying a distinctive grayish purple color reminiscent of natur...
View full detailsEmerald Cut Faceted Imitation Alexandrite
Otto FreiThis Alexandrite simulant is crafted from lab-created synthetic purple corundum, displaying a grayish purple color characteristic of alexandrite im...
View full detailsOval Faceted Genuine Amethyst
Otto FreiAmethyst has captivated gem lovers for centuries — early Greeks believed its rich purple hue had the power to prevent drunkenness, and the stone's ...
View full detailsCloseout Druzy Quartz Purple Oval 20mm x 15mm
Otto FreiDruzy Quartz adds a colorful, glittery texture to any jewelry at an affordable cost. The term "Druzy" refers to clusters of tiny crystals that form...
View full detailsCloseout-Druzy Quartz Purple Oval 18mm x 13mm
Otto FreiDruzy Quartz adds a colorful, glittery texture to any jewelry at an affordable cost. The term "Druzy" refers to clusters of tiny crystals that form...
View full detailsOval Faceted Genuine Iolite
Otto FreiIolite takes its name from the Greek word for violet, and this genuine faceted stone delivers a vivid violet-blue color that makes it a compelling ...
View full detailsPear Faceted Imitation Amethyst
Otto FreiThis pear faceted imitation amethyst is composed of a lab-created spinel doublet exhibiting a light to medium purple color. The doublet constructio...
View full detailsOval Faceted Imitation Amethyst
Otto FreiThis oval faceted imitation amethyst is composed of a lab-created synthetic spinel doublet exhibiting a light to medium purple color. The doublet i...
View full detailsMarquise Faceted Imitation Alexandrite
Otto FreiThis Alexandrite Simulant is composed of lab-created synthetic purple corundum, exhibiting a grayish purple color that evokes the distinctive color...
View full detailsMarquise Faceted Imitation Amethyst
Otto FreiThis marquise faceted imitation amethyst exhibits a light to medium purple color that mimics the rich hue of natural amethyst without its character...
View full detailsHeart Faceted Imitation Amethyst
Otto FreiThis heart-shaped faceted imitation amethyst exhibits a light to medium purple color that closely mimics the rich hue of natural amethyst without i...
View full detailsEmerald Cut Faceted Imitation Amethyst
Otto FreiThis emerald cut faceted imitation amethyst is composed of a lab-created synthetic spinel doublet, exhibiting a light to medium purple color. The d...
View full detailsSquare Faceted Imitation Alexandrite
Otto FreiSquare Faceted Imitation Alexandrite is an alexandrite simulant crafted from lab-created synthetic purple corundum, displaying a distinctive grayis...
View full detailsSquare Faceted Imitation Amethyst
Otto FreiThis imitation amethyst is composed of a lab-created synthetic spinel doublet exhibiting a light to medium purple color. The doublet construction c...
View full detailsPear Faceted Genuine Amethyst
Otto FreiAmethyst is the most popular and valuable stone in the quartz family, prized for its rich purple color that ranges from light lavender to medium-da...
View full detailsMarquise Faceted Genuine Amethyst
Otto FreiAmethyst has captivated gem enthusiasts and jewelers for centuries. Early Greeks believed the stone's deep purple hue could ward off intoxication —...
View full detailsOval Genuine Iolite Cabochon
Otto FreiIolite takes its name from the Greek word for violet, and the color delivers on that promise with a vivid violet-blue hue that catches the eye imme...
View full detailsRound Genuine Iolite Cabochon
Otto FreiIolite is derived from the Greek word for violet, displaying a vivid violet-blue color. These round genuine iolite cabochons are strongly pleochroi...
View full detailsCloseout Faceted Amethyst Assortment Set
Otto FreiThe Closeout Faceted Amethyst Assortment Set includes a curated selection of genuine faceted amethyst gemstones totaling approximately 45–50 carats...
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