Lao Fengxiang and gem ring can't change diamond rings. Because Lao Fengxiang's trade-in requirement is to exchange the same type of jewelry for you, Lao Fengxiang's red gem ring can't be exchanged for a diamond ring.

Lao Fengxiang is a top 500 enterprise in China, a century-old national brand in China and a famous jewelry brand in China. Lao Fengxiang was founded in 1848, integrating science, industry, trade, production, supply and sales. It has a complete industrial chain and diversified product lines, and is a brand with profound cultural heritage across three worlds in China.

ruby

Ruby refers to red corundum, which is a kind of corundum, and its main component is alumina Al? o？ The red color comes from Cr, mainly Cr2O3, and its content is generally 0. 1% ~ 3%, with a maximum of 4%. When Fe and Ti are blue, it is called sapphire, and corundum of other colors not caused by Cr is also called sapphire.