High-high quality, natural yellow sapphires are rather unusual, so jewelers may well make up the primary difference through treatment options or artificial stones. Heat and irradiation therapies are prevalent to further improve coloring, but irradiated gems can fade from sunlight publicity. Diffusion is an additional significantly less popular therapy. • https://bookmarkplaces.com/story17926027/not-known-factual-statements-about-natural-yellow-sapphire-from-sri-lanka