[2] Several years after the Queen Sirikit Cut was introduced, Ho created another special diamond for the late King Bhumibol Adulydej on the occasion of his 68th birthday.
[4] In 1995, the Golden Jubilee, the world's largest faceted diamond of 545.67 carats was purchased from De Beers by a group of Thai business people led by Henry Ho in 1995.
[2] The yellow-brown diamond was named the Golden Jubilee, blessed by Pope John Paul II and was received by the King's daughter, Princess Matia Chari Sirindhom on his behalf in 2000.
[6] The diamond is now on display in the Royal Museum at Pimammek Golden Temple Throne Hall in Bangkok as part of the crown jewels.
[2] The Gem and Jewelry Institute of Thailand (GIT) under the Ministry of Commerce collaborated with the Asian Institute of Gemological Sciences (AIGS) and the Association of Gemmology of France (AFG) to host the first ever World Ruby Forum 2017,[7] an international academic conference aimed to establish ruby as Thailand's most important exported gem.