Jewellery › Edwardian Banded Agate and Diamond Shell Stickpin Image 1 of 1 Edwardian Banded Agate and Diamond Shell Stickpin £1,400.00 The hardstone scallop shell set to the centre with an old mine-cut diamond Reference. SN7527 Add To Cart Added! The hardstone scallop shell set to the centre with an old mine-cut diamond Reference. SN7527 You Might Also Like Edwardian Diamond Running Horse Brooch 18ct Gold and Diamond Seven-stone Ring Diamond Half Eternity Ring Pair of 18ct Gold Queen’s Royal Lancers Cufflinks Single-stone Diamond Ring