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Specimen #VEN-1540-B // Micro-Spectroscopy14x16 Thread Density
● Zero Anachronistic Fillers12,000 DPI Spectral Matrix
Pigment Chemical Analysis
RAMAN / XRFNatural Lapis Lazuli (Ultramarine)Na₈[Al₆Si₆O₂₄]Sₙ
Authentic MatchEra: 15th–17th CenturyRaman: 548 cm⁻¹98.4%
Genuine mineral lazurite ground from Badakhshan lapis. Hexagonal crystal habit observed.
Lead-Tin Yellow Type IPb₂SnO₄
Authentic MatchEra: Pre-1750Raman: 128 cm⁻¹96.1%
Historic formulation obsolete by mid-18th century. Definitive proof of antiquity.
Cinnabar / VermilionHgS
Authentic MatchEra: Classical / AntiquityRaman: 253 cm⁻¹97.9%
High-purity mercuric sulfide with typical medieval wet-process sublimation graining.
Titanium Dioxide (Rutile)TiO₂
Trace RestorationEra: Post-1921Raman: 144 cm⁻¹89.2%
Restricted to a 2mm pinpoint touch-up on outer canvas varnish edge. Sub-layers are authentic.
CONFIDENCE INDEX 97.4% AUTHENTIC