Henig, Windiam and HRA Group among those showing at Somerset House.
The Jewellery Show London has extended its loose gems area for 2013 with the introduction of a new loose diamonds zone at the show.
The June trade show, which marks it second anniversary this year, will welcome loose diamond exhibitors including Windiam, Nasielski Diamonds, Arcadia Diamonds, HRA Group, Henig Diamonds and Blooming Star.
The show’s organiser i2i said it has introduced the loose stones offer "to ensure that the show is the most comprehensive go-to destination in the jewellery buying calendar".
The Jewellery Show London has also developed its loose gemstone offer for 2012 with exhibitors including RM Shah, Antwerp Coloured Gems, Marcia Lanyon and Prabhu set to showcase their wares.
Loose gems company Di Perle, specialists in loose pearls and finished pearl jewellery, will also have its own showroom at the event.