18ct GOLD,AMETHIST AND DIAMOND RING DESIGNED BY GEOFFREY TURK. Home British (sold) 18ct GOLD,AMETHIST AND DIAMOND RING DESIGNED BY GEOFFREY TURK. This item has been sold. Photo Gallery All photos (3) 18ct GOLD,AMETHIST AND DIAMOND RING DESIGNED BY GEOFFREY TURK. × Well designed ring by Geoffrey Turk, who worked with ANDREW GRIMA. He has now passed away and this ring was made in the late 1970s and is signed GT. Listing ID: 452548874b0b6ac1 Share Interested in this item Contact us at the following email address: sandy@sandystanleyjewellery.co.uk