We've got the perfect gift for an October birthday - this matching pendant and stud earrings set, made from 9ct yellow gold and featuring the October birthstone of opal. The earrings measure 17.5mm high, whilst the necklace's pendant measures 21mm high (including bail attachment) and 11mm wide. The pendant can be purchased with no chain, or hanging from a chain 16, 18 or 20 inches in length.