Style: Name Necklace/Letter Necklace Thickness: 1.2mm/0.047" Pendant Size: 3cm*1.3cm/(1.18“ *0.512'' ) Hook: Single Hook Chain type: Cable Chain Material: 925 Silver Style: Name Necklace/Letter Necklace Thickness: 1.2mm/0.047" Pendant Size: 3cm*1.3cm/(1.18“ *0.512'' ) Hook: Single Hook Chain type: Cable Chain Material: 925 Silver Custom Delaware State Necklace - This is the popular USA state necklace .With your birth in state shaped necklaces will be the commemorative value things. Material:925 Silver Color:Silver State: Delaware Word Style:Black Body This will ensure that you are not compromising the structural integrity of your jewellery as well as not causing further surface damage such as discoloration. When in doubt, look for jewellery safe cleaning products when shopping.