Calcite

6 x 14 x 13 in (15.24 x 35.56 x 33.02 cm)

onyx

2 x 4 x 6 in (5.08 x 10.16 x 15.24 cm)

3 x 12 x 9 in (7.62 x 30.48 x 22.86 cm)

Fluorite

3 x 13 x 10 in (7.62 x 33.02 x 25.4 cm)

blue onyx

4 x 16 x 8 in (10.16 x 40.64 x 20.32 cm)

marble

6 x 16 x 6 in (15.24 x 40.64 x 15.24 cm)

limestone and mixed media

5 x 22 x 5 in (12.7 x 55.88 x 12.7 cm)

honeycomb calcite

20 x 18 x 8 in (50.8 x 45.72 x 20.32 cm)