Yaqoot Ruby Falkland Islands Birthstone Fashion 2014 Wedding Party Jewellery 4006

Yaqoot Ruby Falkland Islands Birthstone Fashion 2014 Wedding Party Jewellery. 

By Aamir Manan.

Some rubies show a three-point or six-point asterism or "star". These rubies are cut into cabochons to display the effect properly. Asterisms are best visible with a single-light source, and move across the stone as the light moves or the stone is rotated. Such effects occur when light is reflected off the "silk" (the structurally oriented rutile needle inclusions) in a certain way. This is one example where inclusions increase the value of a gemstone. Furthermore, rubies can show color changes—though this occurs very rarely—as well as chatoyancy or the "cat's eye" effect.