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Lab-Grown Gemstones
We offer faceted gemstones cut from laboratory-grown crystals in the following categories. Detailed lists are now available for alexandrite, citrine, cubic zirconia, emerald, blue sapphire, padparadscha pink sapphire, fancy-colored and white sapphires, spinel, and ruby. Gems can also be set in sterling silver or gold jewelry mountings.
| Gem | Shapes | Comments | |
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Alexandrite | Rounds, ovals up to 18x13 mm, many other shapes | Color change (greenish blue in sunlight; reddish purple in iridescent light). Natural stones are very rare and expensive. |
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Blue Sapphire | Rounds, ovals, cushion, trillion | Rich sapphire blue color and excellent crystal perfection. |
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Citrine | Rounds, ovals, hearts, trillions, cushions | The yellow variety of quartz. As the size of the gemstones increases, the color becomes a richer orange/yellow. |
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Cubic Zirconia | Rounds, ovals, emerald, heart, trillion, pear, marquise cuts, up to 16x12 mm | Emerald green, lavender pink color-change, sapphire blue, red, amethyst, lemon yellow, peach, light green, and a few stones in other colors. |
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Emerald | Round, oval, and emerald cut gems up to 10x8 mm, plus hearts and trillions | Grown by the hydrothermal method, from water solutions at high pressure and moderate temperature. Higher quality than most natural emeralds |
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Padparadscha Sapphires |
Ovals: 6x4, 7x5, 8x6, 9x7, 10x8 & 11x9 mm; rounds: 5, 6, 7 & 8 mm; octagons: 7x5,8x6 & 9x7 mm; 8 and 10 mm hearts.. | Colors range from orangy-red, dark enough to be considered ruby (only a few of these available), through delicate pink with barely a trace of orange. Most are a medium pink with a touch of orange. |
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Ruby | Rounds, ovals, cushion, trillion, hearts | Red ruby gemstones with excellent crystallographic perfection |
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Fancy-Color Sapphire Gems | Round, oval, emerald and heart-cut gems up to 16x12 mm | Colorless and fancy-colored sapphires |
Alexandrites, emeralds, rubies, spinels and sapphires cut from laboratory grown crystals have the same chemical composition, hardness, and other basic physical properties as the corresponding natural gemstones, but are cleaner, more perfect stones. Cubic Zirconia (CZ) does not have a corresponding gemstone that occurs in nature. CZ is usually sold as a diamond look-alike, but can be made in a variety of colors such as the ones we offer here.