Little Star Children's Collection Sterling Silver Chain Necklace With A Diamond Detailed Open Heart Pendant:. Neena – our Diamond set Sterling Silver open heart necklace is a perfect first diamond gift. Simple and refined this diamond necklace is perfect for girls of all ages and with its adjustable chain 35-40cm it can be worn as they continue to grow. A special keepsake for a wonderful day or the perfect bridesmaid gift. We also have a matching larger size necklace as part of our Mummy & Me collection – 2 hearts beat as one. Heart Size: 10mm x 9mm Age Guide: 2yrs to Adult Chain Length: 35cm – 40cm