Manufactured Diffused Sapphire Definition

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.

Manufactured diffused sapphire definition.

In some cases sapphire beads are treated with lattice diffusion that can have shallow embeds of colours superficially exhibited on the surface. 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. Lab created diamonds also known as man made diamonds exhibit the same fire scintillation and sparkle as mined diamonds. This yellow color can be removed with subsequent heat treatment.

Discover more about these beautiful and affordable gemstones. In some cases the added color is shallow. Parti sapphires show two or more colors. However most buyers never repolish or recut the gemstones set in jewelry.

Lattice diffusion is a treatment process that uses heat and chemicals to diffuse an element into a gemstone to artificially change its color. 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. While doing the treatment there might be some traces of yellow color in the stone s interior. Diffusion treated blue synthetic sapphire is inferior to grown blue sapphire in that the treatment is very shallow eliminating the possibility of recutting.

Lattice diffusion treated sapphires can be any color. Polishing or recutting would remove this surface treatment. 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. 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.

Sapphire is transparent durable and scratch resistant. To remove or lighten the blue color in too dark sapphires. 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. On the mohs mineral hardness scale of 1 to 10 going from softest to hardest sapphire a form of corundum scores 9.

Ordinary glass scores 6 to 7 and diamond scores 10.