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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Oval Amber Cabochon
Otto Frei5.0 / 5.0
1 Review
Amber is an organic gem formed millions of years ago when sap from ancient pine trees hardened and fossilized. Amber artifacts date back to 10,000 ...
View full detailsCloseout Oval Red Moss Agate
Otto Frei5.0 / 5.0
1 Review
Oval Red Moss Agate cabochons offer a striking combination of warm red tones and the characteristic moss-like inclusions that make agate a perennia...
View full detailsStraight Baguette Faceted Cubic Zirconia
Otto FreiStraight Step-Cut Baguette Cubic Zirconia stones offer an affordable, brilliant alternative to precious gemstones, making them ideal for statement ...
View full detailsMarquise Faceted Cubic Zirconia
Otto FreiCubic Zirconia is a man-made gemstone that serves as an affordable alternative to precious gemstones and is suitable for everyday wear. These marqu...
View full detailsRound Moissanite - 7mm
Otto FreiMoissanite is among the most brilliant gemstone simulants available to the jewelry trade, offering an exceptional combination of optical performanc...
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 Garnet
Otto Frei5.0 / 5.0
1 Review
Garnet is a set of closely related minerals sharing the same crystal structure while varying in chemical composition. Red is the most common and ab...
View full detailsOval Lab-Created Ruby Cabochon
Otto FreiComposed of man-made corundum with the same chemical composition and durability as natural ruby, these oval lab-created ruby cabochons offer excell...
View full detailsRound Amber Cabochon
Otto FreiAmber is an organic gem formed millions of years ago when sap from ancient pine trees hardened and fossilized. Amber artifacts date back to 10,000 ...
View full detailsRound Rose Quartz Cabochon
Otto FreiRose Quartz derives its name from its pastel pink appearance, ranging from very light to medium-dark pink. Known as the "love stone," this gem has ...
View full detailsCloseout Pack of 6 Druzy Quartz Light Blue Round 8mm
Otto FreiDruzy Quartz adds a colorful, glittery texture to any jewelry design at an affordable cost. The term "Druzy" refers to clusters of tiny crystals th...
View full detailsRound Moissanite 3.5mm
Otto Frei5.0 / 5.0
1 Review
Moissanite is one of the most brilliant gemstone simulants available to the jewelry trade. In the jewelry industry, all moissanite is synthetic mat...
View full detailsCloseout 16mm Heart Genuine Malachite Cabochons
Otto FreiFrom bull's-eyes to straight and curved bands, malachite is a distinctive and easily recognizable gemstone. Ranging from opaque bluish green to viv...
View full detailsOval Black Onyx Cabochon
Otto FreiBlack Onyx, also known as black agate, is dyed black chalcedony. Chalcedony is composed of microscopic quartz crystals not visible to the naked eye...
View full detailsOval Genuine Lapis Lazuli Cabochon, High Quality
Otto FreiLapis Lazuli has been mined in the mountains of Afghanistan for more than 6,000 years — home to the world's oldest known commercial gemstone mines....
View full detailsEmerald/Octagon Faceted Lab-Created Ruby
Otto FreiCut in a classic emerald/octagon faceted shape, these lab-created rubies are composed of man-made corundum sharing the same chemical composition an...
View full detailsRound Faceted Genuine Citrine
Otto Frei5.0 / 5.0
1 Review
Citrine 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...
View full detailsRound Swiss Blue Topaz Cabochon
Otto FreiSwiss Blue Topaz is the trade name used to describe a vivid medium to medium-dark blue hue of topaz. This gem is a great alternative to aquamarine,...
View full detailsOval Sleeping Beauty Turquoise Cabochon
Otto FreiTurquoise has been a prized gemstone for many cultures and civilizations, including the Ancient Egyptians and Native Americans. Turquoise is heavil...
View full detailsCultured Freshwater Round Pearl
Otto Frei5.0 / 5.0
1 Review
From talismans believed to protect against fire and dragons in ancient China to symbols of modesty and purity in Europe, pearls have been treasured...
View full detailsRound Genuine Hematite Cabochon
Otto FreiHematite is composed of iron oxide, exhibiting a shiny, metallic luster. A traditional favorite in men's jewelry, hematite has the highest density ...
View full detailsRound Faceted Genuine White Sapphire
Otto FreiWhite sapphire, also known as colorless sapphire or leucosapphire, is corundum in its purest form. Differing amounts and combinations of trace elem...
View full detailsCloseout-Round Swarovski Gemstonesâ„¢ Genuine Violac Topaz
SwarovskiSwarovski Gemsâ„¢ Genuine Violac Topaz elevates natural topaz through two proprietary processes: the Natural Brilliance Cut and the TCF (Thermal Colo...
View full detailsCloseout-Round Swarovski Gemstonesâ„¢ Genuine Blazing Red Topaz
Swarovski5.0 / 5.0
1 Review
Swarovski Gemsâ„¢ Genuine Blazing Red Topaz elevates natural topaz through two proprietary innovations: the Natural Brilliance Cut and the TCF (Therm...
View full detailsRound Rose-Cut Marcasite
Otto FreiWith a polished metallic, mirror-like appearance, marcasite is a classic choice for antique-style and silver jewelry. Made from a form of pyrite th...
View full detailsRound Blue Onyx Cabochon
Otto FreiBlue onyx, also known as blue agate, is dyed chalcedony — a microcrystalline quartz whose fine crystal structure is invisible to the unaided eye. P...
View full detailsRound Red Jasper Cabochon
Otto FreiJasper is an opaque chalcedony that can display a variety of colors and patterns, making each stone unique. These round red jasper cabochons featur...
View full detailsRound Faceted Tanzanite
Otto Frei2.0 / 5.0
1 Review
Tanzanite is found in only one location in the entire world — Tanzania, in Eastern Africa. Discovered in 1962, tanzanite is a relative newcomer to ...
View full detailsOval Faceted Lab-Created Blue Sapphire
Otto Frei5.0 / 5.0
1 Review
These oval faceted lab-created blue sapphires are composed of man-made corundum sharing the same chemical composition and physical durability as na...
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 detailsOval Lab-Created Blue Sapphire Cabochon
Otto FreiThese oval lab-created blue sapphire cabochons are composed of man-made corundum sharing the same chemical composition and durability as natural sa...
View full detailsBloodstone Oval Cabochon
Otto FreiBloodstone is a member of the Chalcedony family, prized for its opaque dark green to brownish green background accented by distinctive red and redd...
View full detailsOval Opal Triplet Cabochon
Otto FreiOpal is the world's most popular phenomenal gemstone, with many cultures believing that opals have supernatural origins and power. These oval opal ...
View full detailsRound Sleeping Beauty Turquoise Cabochon
Otto FreiTurquoise has been a prized gemstone across many cultures and civilizations, from Ancient Egyptians to Native Americans. Found in Egyptian tombs an...
View full detailsPear Faceted Cubic Zirconia
Otto FreiCubic zirconia is a man-made gemstone that offers an affordable alternative to precious gemstones while delivering impressive brilliance and sparkl...
View full detailsRound Faceted Genuine Blue Sapphire
Otto Frei5.0 / 5.0
1 Review
Sapphire is one of the most popular colored gemstones in the United States, prized for its extraordinary durability and suitability for everyday we...
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