Geological Survey Appraisals

Rock Formation Print

Unpolished Chalcedony Geode (Thunderegg)

Unidentified Rock Fragment

Sodalite in Matrix Mineral Specimen

Fossilized Stone with Inscriptions

Reddish-Brown Mineral Fragment

Ammonite Fossil

Botryoidal Chalcedony or Agate with Fossil Inclusions

Rustic Stone Artifact

Unidentified Rock or Mineral Specimen

Potential Meteorite

Banded Mineral Specimen

Antique Stone Egg

Chalcedony Nodule with Inclusions

Potential Meteorite

Metamorphic Rock Specimen with Silvery Mineral Inclusions

Banded Natural Specimen

Natural Stone

Quartz Geode

Small Metallic Fragment or Mineral Specimen

Fossilized Bone Fragment

Geode or Vug Specimen

Desert Rose Gypsum Cluster

Botryoidal Chalcedony or Geode Fragment

Agate and Quartz Geode Fragment

Weathered Stone Concretion / Geode Fragment

Irregularly Shaped Pale Stone Geofact

Natural Stone with Distinct Stripe

Raw Chalcedony with Matrix

Polished Agate Geode Half

Unspecified Stone Artifact

Geode

Chalcedony Mineral Specimen

Meteoritic Rock

Unidentified Mineral Specimen

Polished Stone

Fossilized Rock

Unidentified Mineral Specimen

Animal Tooth

Raw Crystal Specimen