Educational collection: Fracture (6 minerals)

12 mineralshand pieces: approx. 20 x 20 mmin plastic collector's caseThis educational collection presents the most important types of cleavage on the basis of 12 minerals. It is delivered in a compartmented plastic case. The pieces are about 2 x 2 cm and numbered according to the contents list.

7 mineralshandpieces: approx. 20 x 20 mmin plastic collector's caseThis educational collection is used to show the different behavior of minerals under pressure and tensile action. It comes in a plastic case with compartments. The pieces are about 2 x 2 cm and numbered according to the contents list.

12 mineralshand pieces: approx. 20 x 20 mmin plastic collector's caseA training collection with representation of the different luster types as well as luster quality (metal, diamond, glass, fat, mother-of-pearl, porcelain and silk luster; matte - splendid). The pieces are about 2 x 2 cm and numbered according to the contents list.

10 mineralsHandpiece: 20 x 20 mmin plastic collector's boxTransparency, birefringence, pleochroism and color iridescence are demonstrated on selected pieces. This study collection comes in a compartmented plastic case. The specimens are approximately 2 x 2 cm and numbered according to the contents list.

15 mineralsHandpiece: approx. 20 x 20 mmin subdivided collector's boxThis study collection shows the fluorescent properties of certain minerals. It is delivered in a collector's plastic case. The pieces are about 2 x 2 cm and numbered according to the contents list.

18 mineralshandpiece: approx. 20 x 20 mmin plastic collector's boxThis study compilation shows dia-, para-, as well as ferromagnetism, pyro-, and piezoelectricity as well as examples of conductors, non-conductors, and insulators on the basis of various minerals. The pieces are about 2 x 2 cm and numbered according to the contents list.

15 mineralshand pieces each approx. 20 x 20 mmin subdivided plastic collection boxA study collection showing the different specific weights of minerals, from extremely light specimens like carnalite, to medium weight specimens like calcite and fluorite, to extremely heavy minerals like cinnabar stone. The practice collection comes in a subdivided collection box. The specimens are on average 2 x 2 cm in size. They are numbered according to a contents list containing all relevant data.

9 mineralshandpiece: 20 x 20 mmin plastic caseincluding line chartThis educational collection is for checking the line versus intrinsic color of minerals. It comes in fanned plastic case and with a porcelain line chart. The pieces are about 2 x 2 cm and numbered according to the contents list.