This is an eternity ring made of K18 yellow gold. It has a total of 1ct. It is hallmarked. It weighs almost 3g, so it feels substantial. It's beautiful worn alone, but also looks great stacked with other rings. Gold prices are rising, so I believe this grade would sell for over 100,000 yen on flea market sites and the internet. You don't often see yellow gold eternity rings, so if the size fits, you're in luck. Size: 18 If you'd like to see a video, it's on Y flea market. I've uploaded examples of how it looks stacked with other rings.