Beautiful Solid Black opal 18K Gold and Diamond pendant. Box link chain in picture not included. Comes with Cherry wood gift box. Item Type: SOLID BLACK OPAL Origin: , AUSTRALIA LIGHTNING RIDGE OPAL OPAL SIZE : 10X8X4 MM WEIGHT : 3 Carats SETTING 34 X15X 6 MM GOLD IS 18 K GOLD STAMPED HALLMARK 750 18 K total gram weight 4.14 grams DIAMOND GENUINE BRILLIANT CUT DIAMOND 6 mm = 1/4 inch (Approx) Colour: COLOUR FLASH Pattern: BROADFLASH Brightness Rating 3-5: 3.5