this pendant necklace weighs around 3 grams

while the slider bead is 6mm

This second option would help to showcase the cog shaped sides of this charm

11mm in diameter

large sterling silver puffed heart locket pendant necklace 16 22 inches Charm Bracelet this pendant necklace weighs aroundThis large sterling silver puffed heart locket pendant comes with a chain from 16 to 22 inches. The locket measures 2. 5cm high x 2. 2cm wide x 0. 8cm deep and can hold two special photos inside. Take this from a great gift to an extra special unforgettable one by adding a personalised message to the locket. It can be engraved with a message or wording of your choice in up to 20 characters and you can choose from a range of fonts. Make Valentine's Day