The chrysoprase and Ni silicate ore deposit in Szklary, Lower Silesia, Poland, was probably the biggest European chrysoprase occurrence and possibly also the biggest in the world.
De Stee an d'Ni Silikatzerieschwaasser zu Szklary, Lower Silesia, Polen, war wahrscheinlech déi gréissten europäesch Steeplech Steine ​​méi an och d'gréissten an der Welt.