Once again the Gübelin Gem Lab is bringing its expertise to you! We are pleased to announce our next off-premise gem testing service in Bangkok and invite you to take this opportunity to use our services near you.
The Gübelin Gem Lab discovered an exciting effect in a sapphire from Elahera (Sri Lanka). Apart from the scientific evidence this video is a fine example of the wonders and phenomena that can be hidden in gemstones.
The Swiss-based Gübelin Gem Lab and Swiss Gemmological Institute SSEF, recognised as the leading laboratories for coloured stone testing, have agreed to harmonise their standards for the colour terms “pigeon blood red” and “royal blue.”