XRF readings:
Lead: 90 ppm · Cadmium: 43000 ppm · Arsenic: 169 ppm
Verdict: Low-elevated: below most adult thresholds + High cadmium
This XRF test results for tiny enamel cloisonné egg on wood stand (San Francisco Chinatown 2023) reads 90 ppm lead, above the 90 ppm CPSC limit for children's products. Whether the lead can actually reach food depends on whether it's locked into fired glaze (typically not bioavailable) or sitting on surface paint (typically is). Cadmium reads 43000 ppm, which is also flagged territory. Arsenic reads 169 ppm, worth noting on top of the lead question.
What this XRF reading actually means →
XRF measures lead presence on the surface. It does not measure whether that lead can reach a person. That distinction matters for how you should react to this number. Read the full primer.
Test your own dishes with FluoroSpec →
Source: EverythingLead · Test method: XRF (Niton XL 5 Plus, 1.5 sigma)
License: Verdict and methodology © EverythingLead, CC-BY-SA 4.0. Factual XRF measurements are not copyrightable (Feist v. Rural Tel., 499 U.S. 340).