For over sixty years, UNIGARANTE has combined deep archival research with advanced forensic material analysis to evaluate fine art and antiquities with exceptional care. Independent laboratories in Geneva, London, and New York apply non‑destructive protocols, documenting the physical behavior and historical record of each artifact to preserve its integrity.
This dual focus on documentation and science provides defensible provenance verification, safeguarding cultural heritage for future generations. Our commitment to disciplined scholarship and transparent methodology has made UNIGARANTE a trusted partner for discerning collectors, museums, estates, and institutions worldwide.
Our Conviction
Provenance is earned through documentary evidence, material coherence, and sustained scholarly consensus
Each brushstroke, canvas weave, and archival record is evaluated under strict laboratory standards, ensuring that every Certificate of Authenticity issued by UNIGARANTE carries institutional integrity
Verification Framework
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Material Analysis
Archival Audit
Peer Consensus
Digital Certification
Forensic examination of physical attributes, pigments, and construction methods to assess age, material consistency, and origin without compromise.
Comprehensive review of historical documents, exhibition records, ownership transfers, and catalogued references to establish unbroken provenance.
Independent evaluation by international specialists and art historians, ensuring scholarly rigor, informed attribution, and unbiased assessment.
Secure, tamper-proof digital certification records that preserve authentication outcomes with clarity, traceability, and long-term reliability.