Hemimorphite Druzy Hemimorphite draws its name from the Greek for "half shape" because its crystals are terminated with dissimilar faces. It is often found in aggregate form with blue and white bands, or mixed with a dark matrix. Hemimorphite druzy is a zinc silicate with a hardness of 5 on the Mohs scale. Sometimes spelled druzy, druse or drusies, all these terms refer to tiny crystals that form within or on the surface of other minerals. The most common drusy is quartz (agate or chalcedony), but many other gemstone drusy types exist, including uvarovite garnet, rainbow pyrite, rainbow hematite, hemimorphite, chrysocolla, calcite, dolomite, sphalerite, demantoid garnet, melanite garnet, azurite, dioptase, turquoise and vanadinite.