Polished Agate Freeform with Central Geode druzy cavity
Decorative art / Mineral specimen sculpture • Unattributed lapidary artisan (likely Brazilian or Uruguayan workshop)
Style & Movement
Contemporary Decorative / Naturalism
Medium & Technique
Natural Agate (chalcedony) and quartz crystal; lapidary techniques including sawing, grinding, and high-gloss diamond polishing
Creation Period
Modern (Late 20th - early 21st century)
Dimensions & Format
Approximately 10 to 14 inches in height; vertical freeform sculpture
Subject Description
A vertical, free-standing section of an agate nodule featuring concentric banding in shades of lavender, white, and gray, accented by red iron-oxide inclusions. The center displays a natural dazy geode cavity lined with fine quartz crystals, surrounded by radiating macro-crystalline quartz structures.
Condition & Value Assessment
Condition Assessment
Very Good; natural geological state with high-quality surface polish
Estimated Market Value
$250 - $450 USD
Auction Estimate
$150 - $300 USD
Provenance History
Likely sourced from the gemstone mines of Rio Grande do Sul, Brazil; acquired through the mineral trade for interior decor
Art Historical Significance
Representational of the 'Cabinet of Curiosities' (Wunderkammer) tradition where natural wonders are displayed as art. This piece reflects contemporary interior design trends that prioritize organic textures and geological aesthetics.
Notable Features
Features a prominent 'eye' or geode opening with drusy crystals; the back and profile show distinct banding contrast between the translucent chalcedony and opaque host rock
Condition Issues
Visible natural fractures (internal crazing) which are inherent to the stone's formation; minor micro-chips along the sharp base edge
Conservation Recommendations
Keep out of direct prolonged sunlight to prevent fading of sensitive hues; clean with a soft, damp cloth; avoid acidic cleaners that can etch the mineral surface