Since Neelam is one of the most expensive stones, we do not want you to be duped by seller with fake stone so we shall provide you with the best and purest quality of Blue Sapphire, depending upon your requirement of how much ratti you want. To check its authenticity, we suggest you to take these tests:
1.Comparison With Blue Glass:
Blue glasses can be sold as fake Sapphires. But glass is too shiny, too big and too colorful to be real.
Fake Sapphires, in general, have tiny bubbles inside where as real sapphires do not possess any such inclusions or bubbles.
Sapphire is one of the hardest stones. So, it does not have any scratches or cracks, or rarely might have a very few but fake sapphires will have scratches over them
4.Yellow Rays: If the stone is genuine, it will not show any yellow rays at the edges when rotated.
5.Transparent: The better and more genuine the stone, the more it is transparent, having no blur images in between