"Casting gold ring" refers to the process of creating a gold ring using the casting method. In this process, molten gold is poured into a mold that has been shaped to the desired design of the ring. Once the gold cools and solidifies, the mold is removed, leaving behind the finished ring. Casting allows for intricate designs and details to be reproduced accurately, making it a popular method for crafting gold jewelry, including rings. After casting, the ring may undergo further polishing, finishing, or embellishment to achieve the desired final appearance.