Platinum

Platinum is a precious metal 35 times rarer than gold and twice as hard as gold. With a high density, platinum is heavier than gold. High purity platinum is a popular precious metal choice for wedding rings due to its durability and excellent resistance  to corrosion. Elvis Presley chose platinum wedding rings, demonstrating his elegance and special taste.

Hong Kong regulation:

"足鉑金"990 It contains not less than 99% pure platinum and is stamped "Pt 990", "足鉑金" or "足白金".
Pt 950: It contains 95% pure platinum combined with 5% alloys and is stamped "Pt 950". It is often used for gem-set jewellery.
Pt 900: It contains 90% pure platinum combined with 10% alloys and is stamped "Pt 900". It is often used for gem-set jewellery.

China regulation:

   
"足鉑金" 990: It contains not less than 99% pure platinum and is stamped "Pt 990" or "足鉑金".
Pt 950: It contains 95% pure platinum combined with 5% alloys and is stamped "Pt 950". It is often used in gem-set jewellery.
Pt 900: It contains 90% pure platinum combined with 10% alloys and is stamped "Pt 900". It is often used in gem-set jewellery.