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The Lab Grown Sapphire and Lab Grown Ruby Roughs are of the hardest and most durable varieties of gemstones. They are both made from a mineral called corundum and can be made into different colours with the addition of oxides.
How are the Lab Roughs Grown?
The Sapphire Rough is created by the crystal pulling method. The crystal pulling method dips a seed into a heated container of melted nutrients and synthetic crystals slowly grow from it as it is gradually pulled away from the melt.
They have an astounding hardness of a 9 on the 1-10 Mohs scale of hardness, the same as their natural sapphire counterparts. Their hardness and natural characteristics allow them to be worn daily with peace of mind that they can withstand the day to day rigors of daily wear of your jewelry. Our man made Blue Sapphires undergo all the same post mining finishing processes that a fine genuine sapphire does. They are all hand cut and hand polished to fine gem quality specifications, insuring proper reflection and refraction of a rich and lustrous color of gem quality blue sapphires. Starsgem lab created Blue Sapphires are always set in solid 14k gold, 18k gold or luxurious precious platinum.
Properties of Lab Grown and Natural Sapphire
| Properties | Lab Grown Sapphire | Natural Sapphire |
| Classification | Corundum | Corundum |
| Chemical Composition | Al 2O 3 | Al 2O 3 |
| Crystal System | Trigonal | Trigonal |
| Hardness (Mohs) | 9 | 9 |
| Specific Gravity | 4+/- | 4+/- |
| Refractive Index | 1.76+/- | 1.76+/- |
| Luster | Vitreous | Vitreous |
If you do not see the size or color you are looking for, Starsgem provides special custom cutting services, simply e-mail us at sales2@starsgem.com with your exact requirements, and we will respond with a quote.
The Lab Grown Sapphire and Lab Grown Ruby Roughs are of the hardest and most durable varieties of gemstones. They are both made from a mineral called corundum and can be made into different colours with the addition of oxides.
How are the Lab Roughs Grown?
The Sapphire Rough is created by the crystal pulling method. The crystal pulling method dips a seed into a heated container of melted nutrients and synthetic crystals slowly grow from it as it is gradually pulled away from the melt.
They have an astounding hardness of a 9 on the 1-10 Mohs scale of hardness, the same as their natural sapphire counterparts. Their hardness and natural characteristics allow them to be worn daily with peace of mind that they can withstand the day to day rigors of daily wear of your jewelry. Our man made Blue Sapphires undergo all the same post mining finishing processes that a fine genuine sapphire does. They are all hand cut and hand polished to fine gem quality specifications, insuring proper reflection and refraction of a rich and lustrous color of gem quality blue sapphires. Starsgem lab created Blue Sapphires are always set in solid 14k gold, 18k gold or luxurious precious platinum.
Properties of Lab Grown and Natural Sapphire
| Properties | Lab Grown Sapphire | Natural Sapphire |
| Classification | Corundum | Corundum |
| Chemical Composition | Al 2O 3 | Al 2O 3 |
| Crystal System | Trigonal | Trigonal |
| Hardness (Mohs) | 9 | 9 |
| Specific Gravity | 4+/- | 4+/- |
| Refractive Index | 1.76+/- | 1.76+/- |
| Luster | Vitreous | Vitreous |
If you do not see the size or color you are looking for, Starsgem provides special custom cutting services, simply e-mail us at sales2@starsgem.com with your exact requirements, and we will respond with a quote.
