What is more costly, diamonds or platinum?

Platinum, with chemical name of Pt is a rare metal, whitish in colour, long wearing, highly polish and usually is associated in jewelry as the combination of diamond and platinum rings, necklaces, pendants. read more

Cost of both depend on its size, weight and puriety like Platinum wedding bangles are more costly than platinum ring. In the Same way Diamond cost depend on its carat ,clarity, Cut and weight. But as an average Diamond is more costly than Platinum. read more

A high quality (clarity) diamond will be expensive than gold or platinum even if having much smaller weight but determining the quantity of diamond is a difficult task and is done by experts. Grading and rating diamonds in terms of commercials (cost/money) is a grey area and hence investors generally stay away from investing in diamonds. read more

Best Answer: The last I heard, gold was valued at $900 per troy ounce, and platinum was worth $1900 or so for said quantity. Diamonds are weighed in karats that are much smaller than ounces and cost much more than gold ot platinum. read more