3D model of an opal

<p>3D scan of an Opal from Iceland that is part of the extensive collection of minerals from the estate of the merchant Jakob Friedrich van der Nüll (1750-1823) acquired by the then Imperial and Royal Court Natural History Cabinet (today’s NHMW) in 1827. It has a size of 8 × 6.5 × 3 cm.</p> <p>This object is on display in Hall 2 of the NHMW.</p>