EP91AF9: Elongated cubo-octahedral gold crystals with very well defined and bright faces and edges in a very rare association with rhombohedral Rhodochrosite crystals that partially coat a rocky matrix. The sample is from a not yet well-known Colombian mining area.
The specimen's photo has been reviewed and published in the magazine ‘Rocks & Minerals’ on page 224 in the volume 96, number 3, May/Jun 2021, and it has been published in the book 'Gold - monograph -', by Joaquim Callén, on page 219
Potosí claim, La Tosca cut, Municipio Vetas, Soto Province, Santander Department  Colombia (2017)

Specimen size: 2 × 1.7 × 1.2 cm = 0.79” × 0.67” × 0.47”

Main crystal size: 0.3 × 0.1 cm = 0.12” × 0.04”