GORGEOUS 14K 3.11 CT TANZANITE & 1.42 CTW DIAMOND RING: 3.11 CT square cushion cut tanzanite is set in 14K surrounded by 12 diamonds approx 1.42 CTW. Size 6. Sold with appraisal by American International Gemologists for $11,700, dated October 25, 2018. Est. $5000/12000**