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 Lab-Created Ruby
Otto Frei4.33 / 5.0
3 Reviews
Composed of man-made corundum, this round faceted lab-created ruby shares the same chemical composition and durability as natural ruby. Known as th...
View full detailsRound Lab-Created Ruby Cabochon
Otto Frei5.0 / 5.0
1 Review
A vibrant, professional-grade gemstone for jewelry making and resale, this round lab-created ruby cabochon is composed of man-made corundum — shari...
View full detailsRound Genuine Garnet Cabochon
Otto FreiGarnet belongs to a group of closely related minerals sharing the same crystal structure but varying chemical compositions. While garnet occurs in ...
View full detailsRound Faceted Imitation Red Garnet
Otto Frei1.0 / 5.0
1 Review
This round faceted garnet simulant is composed of synthetic red corundum, delivering a deep, vivid red color that closely replicates the look of na...
View full detailsOval Genuine Garnet Cabochon
Otto Frei5.0 / 5.0
1 Review
Garnet is a set of closely related minerals that share the same crystal structure while varying in chemical composition. Red is the most common and...
View full detailsCloseout-Round Swarovski Gemstonesâ„¢ Genuine Faceted Rhodolite Garnet
SwarovskiSwarovski Gemstonesâ„¢ Genuine Faceted Rhodolite Garnet showcases a vivid, transparent raspberry color that makes it a standout choice for fine jewel...
View full detailsOval Red Jasper Cabochon
Otto FreiJasper is an opaque chalcedony displaying a rich variety of colors and patterns, making each stone a truly unique, one-of-a-kind specimen. These ov...
View full detailsOval Faceted Lab-Created Ruby
Otto Frei5.0 / 5.0
1 Review
Composed of man-made corundum with the same chemical composition and durability as natural ruby, these oval faceted lab-created rubies offer excell...
View full detailsHeart Faceted Lab-Created Ruby
Otto FreiCrafted from man-made corundum sharing the same chemical composition and durability as natural ruby, these heart-faceted lab-created rubies offer e...
View full detailsOval Genuine Faceted Garnet
Otto FreiGarnet 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 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 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 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 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 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 detailsPear Faceted Lab-Created Ruby
Otto Frei5.0 / 5.0
1 Review
Crafted from man-made corundum with the same chemical composition and durability as natural ruby, these pear faceted lab-created rubies offer excep...
View full detailsRound Faceted Genuine Ruby
Otto FreiKnown as the "King of Gems" in Sanskrit, ruby is one of the most desired and valuable gemstones, prized as far back as biblical times. Ruby is the ...
View full detailsMarquise Faceted Lab-Created Ruby
Otto FreiComposed of man-made corundum with the same chemical composition and durability as natural ruby, these marquise faceted lab-created rubies offer ex...
View full detailsPear Genuine Faceted Garnet
Otto FreiGarnet is not a single mineral but a group of closely related minerals sharing the same crystal structure while varying in chemical composition. Re...
View full detailsPear 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...
View full detailsSquare 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 detailsHeart Faceted Imitation Red Garnet
Otto FreiThis Heart Faceted Imitation Red Garnet is a garnet simulant composed of synthetic red corundum, displaying a deep, vivid red color. With a hardnes...
View full detailsSquare Faceted Imitation Red Garnet
Otto FreiThis square faceted red garnet simulant is composed of synthetic red corundum, displaying a deep, vivid red color that closely mimics the appearanc...
View full detailsOval Faceted Genuine Ruby
Otto FreiKnown as the "King of Gems" in Sanskrit, ruby is one of the most desired and valuable gemstones, prized as far back as biblical times. Ruby is the ...
View full detailsMarquise Genuine Faceted Garnet
Otto FreiGarnet is actually a set of closely related minerals that form the Garnet group. While all members share the same crystal structure, they vary in c...
View full detailsRound 5mm Genuine Red Aventurine Cabochon
Otto FreiAdd a rich, natural accent to your jewelry work with this Genuine Red Aventurine Cabochon. Measuring 5mm in a smooth round shape, this cabochon off...
View full detailsOval Red 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 bee...
View full detailsOval Faceted Imitation Red Garnet
Otto FreiOval faceted garnet simulant stones made from lab-created corundum, cut to calibrated sizes for jewelry use. A deep, vivid red that reads clean and...
View full details6mm x 4mm Pear Faceted Genuine Ruby
Otto FreiKnown as the King of Gems in Sanskrit, ruby is one of the most desired and valuable gemstones, prized as far back as biblical times. Ruby is the mo...
View full detailsRound Genuine Ruby Cabochon
Otto FreiKnown as the King of Gems in Sanskrit, ruby is one of the most desired and valuable gemstones, prized as far back as biblical times. Ruby is the mo...
View full detailsMarquise Faceted Imitation Red Garnet
Otto FreiThis marquise faceted imitation red garnet simulant is crafted from lab-created corundum, displaying a deep, vivid red color that closely resembles...
View full detailsEmerald Cut Faceted Imitation Red Garnet
Otto FreiThis garnet simulant is crafted from lab-created synthetic red corundum, displaying a deep, vivid red color characteristic of natural garnet. With ...
View full detailsMarquise Faceted Genuine Ruby
Otto FreiKnown as the "King of Gems" in Sanskrit, Ruby is one of the most desired and valuable gemstones, prized as far back as biblical times. Ruby is the ...
View full detailsRound Red 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 bee...
View full detailsOval Genuine Ruby Cabochon
Otto FreiKnown as the King of Gems in Sanskrit, ruby is one of the most desired and valuable gemstones, prized as far back as biblical times. Ruby is the mo...
View full details