0.40 carat round CZ stone set in a sterling silver band with yellow gold plating. Most sizes are available to ship right away. Select custom size if you do not see your size in the drop down menu. Production lead time is 4-6 weeks. Specification Gemstone: CZ diamond, High quality, Brilliant Heart & Arrow Cut Stone size: Approximately 5mm, 0.40 carat size equivalent Metal: 925 Sterling Silver, plated with real 24K gold Thank you for your interest in our solitaire cz diamond set in a sterling silver ring and plated with real 24K yellow gold.