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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Square Faceted Lab-Created Ruby
Otto FreiComposed of man-made corundum with the same chemical composition and durability as natural ruby, this square faceted lab-created ruby offers excell...
View full detailsPear Faceted Genuine Swiss Blue Topaz
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 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 detailsOval Green Onxy Cabochon
Otto FreiGreen onyx, also known as green agate, is dyed chalcedony — a microcrystalline quartz prized by jewelers and metalsmiths for its uniform color, smo...
View full detailsOval Amazonite Cabochon
Otto FreiNamed after the Amazon River that runs through Brazil, amazonite is a striking alternative to turquoise. Its distinctive blue-green color, grid-lik...
View full detailsRound High Domed Genuine Lapis Lazuli Cabochon, High Quality
Otto FreiLapis Lazuli has been mined in the mountains of Afghanistan for more than 6,000 years. In fact, these mountains are home to the world's oldest know...
View full detailsRound Snowflake Obsidian Cabochon
Otto FreiSnowflake Obsidian is named for its patches of white inclusions that resemble snowflakes. Obsidian is a naturally occurring volcanic glass, commonl...
View full detailsTrillion 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. Whether you...
View full detailsTriangular Faceted Cubic Zirconia with Sharp Corners
Otto FreiTriangular Faceted Cubic Zirconia with Sharp Corners offers the dazzling brilliance and sparkle of a precision-cut gemstone at a fraction of the co...
View full detailsPear Genuine Opal Cabochon
Otto Frei5.0 / 5.0
1 Review
Opal is the world's most popular phenomenal gemstone, with many cultures believing that opals have supernatural origins and power. Inside each opal...
View full detailsAntique Flat Top Single Bevel Genuine Black Onyx
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 Faceted Imitation Aquamarine
Otto FreiSimulating the light sky blue of aquamarine, these oval faceted stones are composed of lab-created blue spinel. Crafted to calibrated dimensions, t...
View full detailsOval Genuine Opal Cabochon
Otto FreiOpal is the world's most popular phenomenal gemstone, with many cultures believing that opals had supernatural origins and power. Inside each opal,...
View full detailsCloseout Druzy Quartz White Opal 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 detailsRound Rose Cut Lab-Created 10mm Blue Sapphire
Otto FreiThis Round Rose Cut Lab-Created Blue Sapphire is composed of man-made corundum sharing the same chemical composition and physical durability as nat...
View full detailsOval 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...
View full detailsOval Lab-Created White Sapphire Cabochon
Otto FreiThe Oval Lab-Created White Sapphire Cabochon offers jewelers and metalsmiths a clean, versatile white stone for setting in rings, pendants, earring...
View full detailsMarquise Faceted Imitation Emerald
Otto FreiDisplaying a vivid emerald green, these Marquise Faceted Imitation Emeralds are ideal for May birthstone jewelry designs. Each stone is a lab-creat...
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 detailsSquare Faceted Imitation Sapphire
Otto FreiMimicking the rich royal blue of natural sapphire, these square faceted imitation sapphires are composed of lab-created blue spinel. Offering an af...
View full detailsOval Denim Lapis Cabochon
Otto FreiLapis Lazuli has been mined in the mountains of Afghanistan for more than 6,000 years — these mountains are the world's oldest known commercial gem...
View full detailsCloseout 9mm x 7mm Oval Cat's-Eye Opal Cabochon
Otto Frei2.0 / 5.0
1 Review
Opal is the world's most popular phenomenal gemstone, with many cultures believing it possessed supernatural origins and power. While precious opal...
View full detailsOval Snowflake Obsidian Cabochon
Otto FreiSnowflake Obsidian is named for its patches of white inclusions that resemble snowflakes. Obsidian is a naturally occurring volcanic glass, typical...
View full detailsEmerald Moissanite - 8x6mm
Otto FreiMoissanite in the jewelry industry is synthetic material. With one of the highest refractive indices and light dispersion ratings of any gemstone s...
View full detailsRock Deco 3.5mm Diamond Pearls-Grey (N)
Otto FreiThese 3.5mm natural diamond pearls from Rock Deco are finely polished round spheres that showcase the unique character of genuine grey diamonds. Ea...
View full detailsPack-2 Round Created Diamond-2.25mm
Otto FreiFull cut round created diamond melee in 2.25mm, sold in a pack of 2. These HPHT-created diamonds deliver the brilliance and sparkle of natural diam...
View full detailsPack-10 Round Lab Grown Diamond-1.50mm
Otto Frei5.0 / 5.0
1 Review
Elevate your jewelry designs with Full Cut Lab Grown Round Diamond Melee, sold in a convenient pack of 10. At 1.50mm, these precision-cut round dia...
View full detailsPack-10 Round Lab Grown Diamond-1.25mm
Otto FreiElevate your designs with full-cut lab grown round diamond melee, sold in a convenient pack of 10. These 1.25mm stones are ideal for accent work al...
View full detailsPack-5 Rock Deco Natural Rose Cut Diamonds-2mm Yellow
Otto FreiFor the first time, jewelers and metalsmiths can purchase calibrated sizes of these natural rose cut diamonds in yellow. Please note that color wil...
View full detailsPack-3 Rock Deco Natural Rose Cut Diamonds-3mm White
Otto FreiFor the first time, you can buy calibrated sizes of these natural rose cut diamonds, now available in convenient packs of 3. These 3mm white rose c...
View full detailsTriangular Faceted Cubic Zirconia with Cut Corners
Otto FreiTriangular faceted cubic zirconia with cut corners offers a brilliant, affordable alternative to precious gemstones — ideal for statement jewelry, ...
View full detailsRound Genuine Lapis Lazuli Cabochon, High Quality
Otto FreiLapis Lazuli has been mined in the mountains of Afghanistan for more than 6,000 years. In fact, these mountains are home to the world's oldest know...
View full detailsOctagon Buff Top Double Bevel Genuine Black Onyx
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 detailsCushion Bumble Bee Jasper
Otto FreiBumble Bee Jasper comes from the volcanic areas of Indonesia and Australia. It displays a wonderful array of yellows, blacks, greys, and oranges. E...
View full detailsOval Faceted Lab-Created Light Blue Sapphire
Otto FreiComposed of man-made corundum with the same chemical composition and durability as natural sapphire, these oval faceted lab-created light blue sapp...
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