17.8mm x 16.5mm x 6.5mm. Variscite is a rare material, the jewelry-buying public is not very familiar with, and as a result, it is rarely seen in jewelry stores.  These are fairly soft stones.  Gorgeous green with a grayish matrix.  Gorgeous in person!  The photo does this absolutely no justice.    Sizes are approximate, color may vary from photo.  Photo taken under LED light.