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Sapphire is a variety of the mineral corundum, an aluminium oxide. It is typically blue but fancy coloured sapphires also occur. The variety in col...

Emerald’s lustre is vitreous, it rates 7.5-8 on the Mohs scale but because of their many inclusions they are not ideal for everyday jewellery, unle...

Sapphire is a variety of the mineral corundum, an aluminium oxide. It is typically blue but ‘fancy’ coloured sapphires also occur in orange, ye...

Ruby’s hues vary from orangey-red to purplish-red and the presence of chromium is the trace element that causes the unparalleled ruby red colour. T...

Sapphire is a variety of the mineral corundum, an aluminium oxide. It is typically blue but fancy coloured sapphires also occur. The variety in col...

Ruby’s hues vary from orangey-red to purplish-red and the presence of chromium is the trace element that causes the unparalleled ruby red colour. T...

Garnet is a wide group of closely related mineral species with many varieties. Garnets range from red, brownish red, purplish red, orange, yellow t...

Spinel can be red, pink, orange, purple, violet or blue. Red and pink are caused by traces of chromium, orange and purple by chromium and iron and ...

Sapphire is a variety of the mineral corundum, an aluminium oxide. It is typically blue but fancy coloured sapphires also occur. The variety in col...

Spinel can be red, pink, orange, purple, violet or blue. Red and pink are caused by traces of chromium, orange and purple by chromium and iron and ...

Garnet is a wide group of closely related mineral species with many varieties. Garnets range from red, brownish red, purplish red, orange, yellow t...

Sapphire is a variety of the mineral corundum, an aluminium oxide. It is typically blue but fancy coloured sapphires also occur. The variety in col...

Sapphire is a variety of the mineral corundum, an aluminium oxide. It is typically blue but fancy coloured sapphires also occur. The variety in col...

Sapphire is a variety of the mineral corundum, an aluminium oxide. It is typically blue but fancy coloured sapphires also occur. The variety in col...

Tourmalines are found in a wide range of colours, pink, green, blue, orange, yellow, brown, black, and colourless. Bi-coloured Tourmalines are also...

Opal is probably the most famous phenomenal stone displaying the unparalleled play-of-colour, a rainbow-coloured kaleidoscopic effect. The name opa...

Aquamarine is the bright blue variety of beryl species. Its colour can be pale to dark blue or greenish blue which is caused by iron trace elements...

Sapphire is a variety of the mineral corundum, an aluminium oxide. It is typically blue but fancy coloured sapphires also occur. The variety in col...

Garnet is a wide group of closely related mineral species with many varieties. Garnets range from red, brownish red, purplish red, orange, yellow t...

Opal is probably the most famous phenomenal stone displaying the unparalleled play-of-colour, a rainbow-coloured kaleidoscopic effect. The name opa...

Ruby’s hues vary from orangey-red to purplish-red and the presence of chromium is the trace element that causes the unparalleled ruby red colour. T...

Sapphire is a variety of the mineral corundum, an aluminium oxide. It is typically blue but fancy coloured sapphires also occur. The variety in col...

Ruby’s hues vary from orangey-red to purplish-red and the presence of chromium is the trace element that causes the unparalleled ruby red colour. T...

Sapphire is a variety of the mineral corundum, an aluminium oxide. It is typically blue but fancy coloured sapphires also occur. The variety in col...