What does diffusion mean in gemstones?

What does a diffused sapphire mean?

Blue diffusion-treated sapphires are be- coming more prevalent than ever before. The diffusion technique, which involves the addition of color-causing chemicnls during heat trentment, results in a thin layer of color at the surface of colorless or light-colored sapphire.

Are heat treated sapphires bad?

Heat treatment alone does not affect the durability of sapphires. It is important to be aware that fracture filled or doublet sapphires can be problematic in future as they are less durable.

What is a diffused Emerald?

Diffusion treatment consists of exposing the surface of a stone to certain chemicals combined with high heat in a furnace. Generally, only the surface color changes, so if you sliced the gem in half, the inside of the stone would be a different color, usually a paler, less valuable color. … Beware of this treatment.

How can I tell if my sapphire is real?

The Fog Test

If you’re looking at a sapphire and want to confirm it’s authenticity, just breath on it for a second. On real sapphires, the fog from your breath will evaporate very quickly (~2 seconds). If it’s fake, it may take 5 seconds or more to start evaporating and 2-3 seconds to actually evaporate.

What is beryllium diffused sapphire?

Gem dealers in Bangkok, Thailand, are reacting to concerns that beryllium diffusion is being used on blue sapphires. Beryllium diffusion typically brightens the color of ruby or sapphire, making a stone more yellow, orange, or red, depending on the original color.

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Which gemstones are not treated?

Natural gemstones form within the earth. Stones such as Moonstone and Rose Quartz are typically not treated. However, some natural stones—like Amethyst, Topaz, Citrine, Sapphire, Ruby, Aquamarine, and Tanzanite—are usually heated after they’re recovered from the earth.

What is heated ruby?

Today, it is common for rubies to go through heat treatment. This is because the heat treatment of rubies will enhance the colour of ruby and improve the clarity by removing any inclusions inside, making them less visible.

What is diffusion genuine sapphire?

Lattice diffusion is a treatment process that uses heat and chemicals to diffuse an element into a gemstone to artificially change its color. Lattice diffusion–treated sapphires can be any color. In some cases the added color is shallow. In others, it goes all the way through the stone.