Sand Balls.
These specimens are aggregates of Quartz and Feldspar, with a compact, spherical morphology.
Their formation took place during the Cretaceous period, approximately 90 million years ago.
Origin: Segovia (Spain)
These specimens come from old quarry extractions in the region.
Size: 13 to 25 cm approx.
Weight per unit: 1 to 5 kg approx.
PRICE PER KG
