Top tier blue sapphire. This sapphiren is mined in Thailand, the colour is typical of Thailand sapphire withthe perfect deep sea blue colour. The colur does vary a little bit, it is a natural gemstone without any colour enhancement or any other enhancement, the gem is 100% untreated and the certificate from GLC (Gemmological Laboratory Chanthaburi) details this. This sapphire features a six ray star, the camera does blur it out a bit but in reality, the star is a very defined, this and precise star. This sapphire is 23.80cts. 13.41mmX16.15X8.87mm. Please look through the photos well and see the details and feel free to ask any questions Please note that photos will appear different, monitor to monitor however I do not use any photo modification, photo adjustment or special lighting.