Flush Set Black Diamond Ring in 18K Black Gold Flush Set Black Diamond Ring in 18K Black Gold Other Products. Three Row Diamond Ring Diamond 0.30 ct. 18K White Gold More Detail Tension Set Diamond Ring Diamond 1.23 ct. 18K White Gold More Detail Tension Set Diamond Ring Diamond 0.50 ct. GIA Certified D VS1 3 Excellent 18K Rose Gold More Detail Black Diamond Studs Earrings 18K Black Gold More Detail