Vintage Bell Trading Turquoise Sterling Silver Ring. Gorgeous triangular blue green turquoise with matrix surrounded by sterling silver beading. Turquoise is 10 x 10 mm. Ring top is 16 x 16 mm. Old Bell Trading mark and marked sterling. Size 6.75 on mandrel. Smoke-free home Not a Posh member? Enter my referral code DNSESQ1 when you join and receive a $10 credit.