A 0.14 carat round blue tanzanite with 0.11 carats of round lab-grown pink, white, and yellow diamonds in 18K yellow gold over sterling silver earrings - the tanzanite earring where three colors of genuine lab-grown diamonds create a warm-and-cool multi-diamond accent. Tanzanite's characteristic blue-violet pairs with the warmth of pink and yellow lab-grown diamonds and the brightness of white lab-grown diamond. Lab-grown diamonds are real diamonds, identical to mined diamonds.