Roberts Rock Appraisals

Smooth River Stone

Quartz Crystal Cluster

Obsidian Stone

Quartz Crystal

Polished Quartz Crystal

Geode or Vug Specimen

The Walking Dead Comic Book Issue #98 "Something to Fear part two"

Unidentified Metallic Mineral Specimen

Banded Natural Specimen

Quartz Specimen with Iron Staining

Natural Stone

Botryoidal Chalcedony Specimen

Botryoidal Chalcedony and Quartz Specimen

Botryoidal Chalcedony on Matrix

Banded Calcite/Aragonite Mineral Specimen

Raw Mineral Specimen

Botryoidal Chalcedony Specimen

Quartz Geode Half

Unidentified Mineral Specimen (Possibly Quartz)

Natural Mineral Specimen (Possibly Quartz or Chalcedony Geode Fragment)

Rough Mineral Specimen

Rough Opal or Similar Mineral Specimen

Desert Rose Gypsum Cluster

Quartz Geode

U2 Portfolio

Banded Agate Specimen

Rough Mineral Specimen

Raw Chalcedony Specimen

Natural Stone Artifact

Chalcedony or Agate Specimen

Unidentified Stone

Botryoidal Chalcedony Specimen

Botryoidal Chalcedony Specimen

Uncut Agate

Rough Sodalite Mineral Specimen

Botryoidal Chalcedony or Geode Fragment

Agate and Quartz Geode Fragment

Weathered Stone Concretion / Geode Fragment

Raw Botryoidal Quartz or Chalcedony Specimen

Botryoidal Agate or Chalcedony Specimen