Real in-store prices from 600+ Costco locations. Download on the App Store to track prices, scan shelf tags, and get alerts.
1.20 CT Round Brilliant Platinum Solitaire Ring VS1 H Color
In-store pricing snapshot
Last known warehouse price ยท Nov 16, 2025. Currently out of stock.
* Prices shown are for Costco members only.
This 1.20 carat round brilliant cut diamond solitaire ring is set in platinum, offering timeless elegance and exceptional durability. The diamond is graded VS1 clarity, meaning it has very slight inclusions that are difficult to see under 10x magnification, and H color, placing it in the near-colorless range for a bright, white appearance to the naked eye.
The round brilliant cut is the most popular diamond shape, featuring 57 or 58 facets engineered for maximum light return, fire, and scintillation. The platinum setting provides a naturally white, hypoallergenic metal that will not tarnish or fade over time, making it ideal for everyday wear. Costco diamond rings in this category typically include a GIA Gemological Report verifying the diamond's cut, clarity, color, and carat weight.