Diamond Lab Grown Diamond Colored Stone Not Too Sure Not Too Sure Platinum 18ct White Gold 18ct Yellow Gold 18ct Rose Gold 18ct 2-Tone Gold $3,000 - $5,000 $5,000 - $7,000 $7,000 - $10,000 $10,000 - $13,000 $13,000 - $15,000 $15,000 - $18,000 $18,000 + Not too sure