Materials: 14k solid gold, Opal, Yellow diamond Necklace length: 40.5cm (16 Inches) ****If you need a different length of chain, let me know.***** Wearing your birthstone brings you good luck and protects you. The diamond will increase your inner strength and remove any negative energy. ＊Opal Opal helps in accessing and expressing your true self. It is absorbent and reflective. It picks up thoughts and feelings, amplifies them and then sends them back. It increases self-worth, helps you to understand your full potential. It has always been associated with love and passion. Opal can act as an emotional stabilizer. - Stone: Opal : 4mm x 3mm. Yellow diamond: 2-2.5mm - Chain length: 40.5cm (16”) - Delicate 14K gold: 0.9mm curb chain / Thin barely-there chain. - Material: All 14k solid gold purchased in the USA. - Please note gemstones are slightly different in color shape, and size since all are natural. Some have naturally occurring inclusions or imperfections.