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.
Filtri
Oval Faceted Genuine Peridot
Otto FreiNamed by the Egyptians as the "gem of the sun," peridot is one of the few gemstones that occurs in only one color — a distinctive yellowish green t...
Visualizza tutti i dettagliOval Charoite Cabochon
Otto Frei5.0 / 5.0
1 Revisione
Charoite is a striking opaque purple gemstone featuring swirls, veins, and patches of black, gray, white, and brownish-orange. Found exclusively in...
Visualizza tutti i dettagliRound Malachite Cabochon
Otto FreiFrom bull's-eyes to straight and curved bands, malachite is a distinctive and easily recognizable gemstone with a character entirely its own. Rangi...
Visualizza tutti i dettagliRound Angel Skin Coral Cabochon
Otto FreiCoral is an organic gem composed of the external skeletons of coral polyps. Formed from calcium carbonate with no crystal structure, coral has been...
Visualizza tutti i dettagliOval Genuine Peridot Cabochon
Otto FreiNamed by the Egyptians as the "gem of the sun," peridot is one of the few gemstones found in only one color — a distinctive yellowish green to gree...
Visualizza tutti i dettagliRound Genuine Citrine Cabochon
Otto FreiCitrine ranges from transparent yellow to brownish orange in color and takes its name from citron, a fruit related to the lemon. Most citrine is pr...
Visualizza tutti i dettagliRock Deco Natural Rose Cut Diamonds-3mm White AAA
Otto FreiFor the first time, calibrated sizes of these natural rose cut diamonds are available for professional jewelers and metalsmiths. Offered in 3mm, AA...
Visualizza tutti i dettagliOval Flat Top Double Bevel Genuine Black Onyx
Otto FreiBlack Onyx, also known as black agate, is dyed black chalcedony. Chalcedony is composed of tiny quartz crystals that are not visible to the naked e...
Visualizza tutti i dettagliOval Unakite Cabochon
Otto FreiOval Unakite Cabochons offer jewelers and metalsmiths a striking natural stone with a rich, multi-toned palette. Unakite is an opaque stone compose...
Visualizza tutti i dettagliOval 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...
Visualizza tutti i dettagliCloseout-Round Swarovski Gemstones™ Genuine White Topaz
SwarovskiSwarovski Gems™ Genuine White Topaz brings exceptional brilliance and purity to natural topaz through Swarovski's proprietary Natural Brilliance Cu...
Visualizza tutti i dettagliPear Faceted Imitation Red Garnet
Otto FreiThis garnet simulant is made from lab-created corundum, displaying a deep, vivid red color characteristic of natural garnet. With a hardness of 9 o...
Visualizza tutti i dettagliRound Rainbow Moonstone Cabochon
Otto Frei5.0 / 5.0
1 Revisione
Rainbow Moonstone is the trade name for a variety of labradorite that shows multi-colored adularescence over a light body color. While it belongs t...
Visualizza tutti i dettagliCultured Freshwater Half-Drilled Rose Pearl
Otto FreiFrom ancient China, where pearls were believed to protect against fire and dragons, to Europe, where they symbolized modesty and purity, pearls hav...
Visualizza tutti i dettagliQuadrillion Faceted Cubic Zirconia
Otto FreiCubic Zirconia is a man-made gemstone that offers an affordable alternative to precious gemstones and is suitable for everyday wear. This Quadrilli...
Visualizza tutti i dettagliOval Genuine Iron Tiger Eye Cabochon
Otto FreiOval Genuine Iron Tiger Eye Cabochons offer jewelers and metalsmiths a natural stone option with the distinctive chatoyant shimmer characteristic o...
Visualizza tutti i dettagliPear Faceted Imitation Sapphire
Otto FreiMimicking the royal blue color of natural sapphire, these pear faceted imitation sapphires are composed of lab-created blue spinel. Offered in a ra...
Visualizza tutti i dettagliRound Genuine Turquoise Cabochon (With Matrix)
Otto FreiTurquoise has been a prized gemstone across many cultures and civilizations, including Ancient Egyptians and Native Americans. Colored by copper, t...
Visualizza tutti i dettagliOval Genuine Sodalite Cabochon
Otto FreiThese oval genuine sodalite cabochons offer a rich royal blue color that makes them a striking choice for rings, pendants, earrings, and other jewe...
Visualizza tutti i dettagliPack-10 Round Moissanite 1.7mm
Otto Frei5.0 / 5.0
1 Revisione
Moissanite used in the jewelry industry is entirely synthetic material, grown to precise optical and physical standards. With a higher refractive i...
Visualizza tutti i dettagliPack-10 Round Moissanite 1.3mm
Otto FreiMoissanite used in the jewelry industry is synthetic material, lab-created to deliver exceptional optical performance. With a higher refractive ind...
Visualizza tutti i dettagliRound Created Diamond-3mm
Otto Frei5.0 / 5.0
1 Revisione
This 3mm full-cut round created diamond offers a brilliant, faceted appearance at a lower cost than a mined diamond, with less environmental impact...
Visualizza tutti i dettagliPack-5 Rock Deco Natural Rose Cut Diamonds-2mm White
Otto FreiFor the first time, jewelers and metalsmiths can source calibrated sizes of natural rose cut diamonds in convenient packs of five. These 2mm white ...
Visualizza tutti i dettagli12mm x 6mm Marquise Green Moss Agate Cabochon
Otto FreiAgate is a type of chalcedony characterized by curved and angular bands of color that vary in hue and transparency. From patterns of lace, moss, an...
Visualizza tutti i dettagliCloseout Rock Deco Orange Chalcedony Cabochon 10 Ct Assortment
Otto Frei5.0 / 5.0
1 Revisione
This 10-carat assortment of natural Orange Chalcedony cabochons from Rock Deco offers jewelers and designers a versatile mix of shapes and sizes at...
Visualizza tutti i dettagliAntique Buff Top Single Bevel Genuine Black Onyx
Otto FreiBlack Onyx, also known as black agate, is dyed black chalcedony. Chalcedony is composed of tiny quartz crystals not visible to the naked eye. Natur...
Visualizza tutti i dettagliRound Genuine Sodalite Cabochon
Otto FreiRound genuine sodalite cabochons offer a rich, deep royal blue color that makes them a compelling and more accessible alternative to lapis lazuli. ...
Visualizza tutti i dettagliEmerald Cut Faceted Lab-Created Nano Crystal Emerald
Otto FreiDisplaying a rich, vivid emerald green, this nano crystal gemstone is ideal for the birthstone of May. With a Mohs hardness of 7 to 7½ and high res...
Visualizza tutti i dettagliOval Faceted Lab-Created Emerald
Otto Frei5.0 / 5.0
1 Revisione
Composed of man-made beryl with the same chemical composition as natural emerald, this oval faceted lab-created emerald offers exceptional clarity ...
Visualizza tutti i dettagliCloseout-Round Swarovski Gemstones™ Genuine Faceted 1mm Bright Blue & Pink Sapphires | OttoFrei.com
SwarovskiSold by the piece, these Round Swarovski Gemstones™ Genuine Faceted Sapphires offer exceptional quality in a 1mm diameter. Available in Bright Blue...
Visualizza tutti i dettagliPear 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 ...
Visualizza tutti i dettagliOval Faceted Imitation Alexandrite
Otto FreiThis Alexandrite simulant is crafted from lab-created synthetic purple corundum, displaying a characteristic grayish purple color. With a hardness ...
Visualizza tutti i dettagliEmerald Cut Faceted Imitation Blue Zircon
Otto FreiThis lab-created blue Spinel displays the ocean blue shade of zircon without its characteristic brittleness. Crafted as a zircon simulant, these em...
Visualizza tutti i dettagliEmerald Cut Faceted Imitation Pink Tourmaline
Otto FreiThis Pink Tourmaline simulant is crafted from lab-created synthetic pink corundum, offering a rich rose pink hue that closely mimics the appearance...
Visualizza tutti i dettagliEmerald Cut Faceted Imitation Emerald
Otto Frei1.0 / 5.0
1 Revisione
Displaying a rich emerald green, this Synthetic Spinel doublet is an ideal emerald simulant and a perfect choice for May birthstone jewelry. Each s...
Visualizza tutti i dettagliEmerald Cut Imitation Aquamarine
Otto FreiSimulating the light sky blue of natural aquamarine, these emerald cut stones are composed of lab-created blue spinel. Available in a range of cali...
Visualizza tutti i dettagli