Specimen Size Guide

Each crystal and mineral specimen in our collection includes a size acronym in the product description to help you understand the dimensions of the piece. Since photographs don't always convey true scale, these acronyms—along with the reference images below—provide a reliable guide to the actual size of the mineral you're viewing.

Sizing Acronyms

TN (Thumbnail) | Maximum dimension up to 37mm (1.5 inches)

MIN (Miniature) | Sizes range from 38mm to 64mm (1.5 to 2.5 inches) at their largest dimension

SMC (Small Cabinet) | 65mm to 102mm (2.6 to 4 inches) at their largest dimension

LGC (Large Cabinet) | Largest dimension measures 103mm to 152mm (4.1 to 6 inches)

XLC (Extra Large Cabinet) | Museum-quality specimens measuring 153mm (6 inches) or larger at their greatest dimension