My ring is engraved with KHPd990 16. What does this mean? Is it platinum or palladium?

It's palladium symbol PD. Your ring is palladium with a content of 990. KH is the abbreviation of producer, which is the brand of "Kaiheng". At present, the price of Palladium 990 jewelry varies from one gram 168 yuan-200 yuan, because of different brands and regions. 16 10 should be the size of a ring.

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