Turquoise

Turquoise with its blue hue, is among the oldest known gemstones. Turquoise was obtained from the Sinai Peninsula before the 4th millennium BC in one of the world's first important hard-rock mining operations. Turquoise started being used before 4000 BC.

Turquoise was an important ornamental mineral for jewellery and other objects by the ancient Egyptians. It graced the necks of Egyptian Pharaohs and adorned the ceremonial dress of early native Americans. Turquoise has been attributed with healing powers as well as promoting the wearer's status and wealth.

Treatments

Turquoise is relatively soft gemstones and are sensitive. Turquoises would receive a wax and subsequent hardening treatment. Cavities would be filled with epoxy. Wax impregnation seals the pores and deepens the colour. Turquoise may be dye or stained to improve the colour.

Caring

Turquoise's colour and lustre tend to deteriorate with exposure to sunlight, heat or acids.

Avoid hot water, soap, grease and chemicals which might cause colour
to fade.

Avoid scratches and sharp objects and make sure protective coatings are not removed.