This is a pendant top featuring a diamond and a boulder opal. Size: Approximately 5.7cm x 2.3cm Hole size: Approximately 5.5mm Markings: K18, Pt900, 010 Weight: Approximately 12.3g Accessories: None This pendant top features a boulder opal with a swirling play-of-color effect, reminiscent of Van Gogh's masterpiece, "The Starry Night." There are no visible cracks or scratches. The carat weight is unknown as there is no stone weight marking. The diamonds are near colorless and transparent, with excellent brilliance. There are some minor scratches on the metal, but overall, it is in good condition. The case in the images belongs to other jewelry and is not included.