TAB47AO6: Floater group of acute rhombohedral Calcite crystals with sand inclusions. An excellent French classic.
This specimen has been published on the Mineralogical Record´s web page, in the 'What’s New on the Internet Reports' section, report 64, July 3, 2022 edition, page 9

Bellecroix, Forêt de Fontainebleau, Fontainebleau, Seine-et-Marne, Île-de-France  France

Specimen size: 5.8 × 3.8 × 3.7 cm = 2.28” × 1.50” × 1.46”

Main crystal size: 1.9 × 1.4 cm = 0.75” × 0.55”