This is a ring from Jewelry Tsutsumi. It is a current item still sold on their online shop. Product code: LFR350 Platinum Diamond Ring 140,000 yen (tax included) This is a classic flower ring composed of 7 diamonds. The arm of the ring features milgrain detailing and is set with 5 melee diamonds. It's a cute ring with subtle craftsmanship. The diamonds used have a slight color, but I think it's not quite champagne brown. Also, even when viewed with a 10x loupe, there are no inclusions that are particularly noticeable, and they sparkle beautifully in the light. The metal is platinum, and the inside of the ring is stamped with Pt900 (the material) and 0.50ct (diamond weight). *Finally, I have included images from the current TSUTSUMI online shop for your reference. Markings: Pt900 050 Size: 7 Weight: 2.09 grams It will be shipped without a case. Shipping included via Nekopos or Yu-packet. *If you prefer to receive the item in person, you can switch to Takkyubin Compact for an additional 350 yen. Please let me know in the comments before purchasing. It will be shipped in a ring case. (Please consider the case as a bonus, as it is a used one I have.)