In short, lab-created, synthetic, and imitation opals are all man-made. Still, there are differences. Natural opals: Natural opals are solid gemstones made of silica, and have not been altered in ...
Unlike gems grown from scratch in a lab, which can be energy-intensive ... The method challenges the notion of man-made gemstones being synthetic, she added. "The slightly unpredictable growth ...
The spinels in the lot were acquired decades ago by globally acclaimed designer Munnu Kasliwal, who had a particular affinity for the gem and created many ... especially after lab-grown diamonds ...