Jewelry Closure: Spring Ring Clasp Setting: Snap Shape: Circle, Round Stone Cut: Round Stone Millimeter Measurement: 6 Mm Length, 6 Mm Width Metal Color: Yellow Chain Length: 18 Inch Pendant Length: 6mm Pendant Width: 6mm Chain Construction: Rope Care: Wipe Clean Stone Type: 1 Lab Created Sapphire Authenticity: Lab Created Stone Birthstone: September Birthstone Metal: 10k Gold Necklace Type: Pendant Necklaces, Solitaire Necklaces Pendant & Charms Type: Pendants Assembled in the US from Imported Materials Gemstones may be treated and may require special care. Photos are enlarged to show detail.