Manufactured Diffused Sapphire Definition

Sapphire gemstone showcasing myriad colours like vibrant red fiery purple electrifying blue silky yellow and pitch dark blacks are produced using diffusion through the crystal structure.

Manufactured diffused sapphire definition.

Sapphire is transparent durable and scratch resistant. In others it goes all the way through the stone. This yellow color can be removed with subsequent heat treatment. Parti sapphires show two or more colors.

Sapphire is a precious gemstone a variety of the mineral corundum consisting of aluminum oxide α al 2 o 3 with trace amounts of elements such as iron titanium chromium vanadium or magnesium it is typically blue but natural fancy sapphires also occur in yellow purple orange and green colors. This purplish black sapphire from burma has been transformed into a commercially usable pink sapphire after a flux additive is put in the heating process. In some cases sapphire beads are treated with lattice diffusion that can have shallow embeds of colours superficially exhibited on the surface. Ordinary glass scores 6 to 7 and diamond scores 10.

Polishing or recutting would remove this surface treatment. Discover more about these beautiful and affordable gemstones. A sapphire made into a diffused star sapphire cannot be polished for a second time or recut as the treatment is only on the surface of the stone. Lattice diffusion is a treatment process that uses heat and chemicals to diffuse an element into a gemstone to artificially change its color.

While doing the treatment there might be some traces of yellow color in the stone s interior. Manufactured sapphire is synthetic crystalline aluminum oxide that is transparent like glass but harder. To remove or lighten the blue color in too dark sapphires. On the mohs mineral hardness scale of 1 to 10 going from softest to hardest sapphire a form of corundum scores 9.

In some cases the added color is shallow. Traditional heating of sapphires typically takes 2 3 days and requires extreme temperatures and conditions to achieve the desired results that will make the sapphire more commercial quality. However most buyers never repolish or recut the gemstones set in jewelry. Lab created diamonds also known as man made diamonds exhibit the same fire scintillation and sparkle as mined diamonds.

The treated goods may also be less transparent as the thin diffused surface may exhibit noticeably different optical qualities from the bulk of the cut specimen.