Ruby treatments - continued...
Surface diffusion is rarely used and in fact, diffusion-treated red corundum should probably not be called ruby. This involves using a red coloring agent and treating colorless corundum so it looks like a ruby. This treatment can be detected by a trained gemologist or gemological laboratory.
The current debate swirls around new technologically advanced cavity-filling and fracture-filling with epoxy resin or glass. These treatments involve heat, but also involve the addition of chemical or flux agents that melt and can fill in natural fractures in the gemstone. These treatments do improve the clarity of the ruby and may also improve the color. The cavity-filling process can also add weight to the gemstone if the cavities being filled are large enough. These clarity treatments are relatively stable but can be affected by heat and chemicals if not handled correctly by a jewelry or gemologist when they are setting or re-polishing the gemstone. This type of treatment can be detected by a trained gemologist or gemological laboratory and these treated rubies should sell for less than traditionally heat treated rubies. In May of this year, the GIA issued a statement that ruby enhanced with these treatments would not be classified as composite rubies. But the other gemstone laboratories are still debating this issue.
The final of the 5 types of treatments is leadglass composites. In 2003, leadglass filled rubies started flooding the international gemstone market and in 2007, the GIA created a special category for these rubies – composite rubies. They are generally not considered to be genuine rubies because they were made from multiple pieces of low-quality ruby that was fused together with tinted glass (usually yellow to orange in color) and sometimes they are more glass than they are ruby. These types of rubies should not be confused with rubies treated with the cavity-filling / fracture filling treatments described above. Composite rubies are much less durable and should sell for a fraction of the price of treated rubies.
Having said all that the cavity-filled / fracture-filled or composite rubies have a place in the gemstone market IF and only IF they are priced correctly and the treatment is disclosed.
AfricaGems.com is proud of its collection a rubies. Our 100% natural ruby gemstones come with gem certificates and we do not sell rubies that have been treated by the new heat treatments. Our ruby gemstones are backed by our unparalleled guarantee policy, guaranteed grading and we even cover the shipping costs. You can feel confident when you purchase a ruby from us.
For the month of July, all ruby gemstones and ruby jewelry is offered at a 25% discount off our whole prices. Use the code ruby2010 at checkout.
Surface diffusion is rarely used and in fact, diffusion-treated red corundum should probably not be called ruby. This involves using a red coloring agent and treating colorless corundum so it looks like a ruby. This treatment can be detected by a trained gemologist or gemological laboratory.
The current debate swirls around new technologically advanced cavity-filling and fracture-filling with epoxy resin or glass. These treatments involve heat, but also involve the addition of chemical or flux agents that melt and can fill in natural fractures in the gemstone. These treatments do improve the clarity of the ruby and may also improve the color. The cavity-filling process can also add weight to the gemstone if the cavities being filled are large enough. These clarity treatments are relatively stable but can be affected by heat and chemicals if not handled correctly by a jewelry or gemologist when they are setting or re-polishing the gemstone. This type of treatment can be detected by a trained gemologist or gemological laboratory and these treated rubies should sell for less than traditionally heat treated rubies. In May of this year, the GIA issued a statement that ruby enhanced with these treatments would not be classified as composite rubies. But the other gemstone laboratories are still debating this issue.
The final of the 5 types of treatments is leadglass composites. In 2003, leadglass filled rubies started flooding the international gemstone market and in 2007, the GIA created a special category for these rubies – composite rubies. They are generally not considered to be genuine rubies because they were made from multiple pieces of low-quality ruby that was fused together with tinted glass (usually yellow to orange in color) and sometimes they are more glass than they are ruby. These types of rubies should not be confused with rubies treated with the cavity-filling / fracture filling treatments described above. Composite rubies are much less durable and should sell for a fraction of the price of treated rubies.Having said all that the cavity-filled / fracture-filled or composite rubies have a place in the gemstone market IF and only IF they are priced correctly and the treatment is disclosed.
AfricaGems.com is proud of its collection a rubies. Our 100% natural ruby gemstones come with gem certificates and we do not sell rubies that have been treated by the new heat treatments. Our ruby gemstones are backed by our unparalleled guarantee policy, guaranteed grading and we even cover the shipping costs. You can feel confident when you purchase a ruby from us.
For the month of July, all ruby gemstones and ruby jewelry is offered at a 25% discount off our whole prices. Use the code ruby2010 at checkout.
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