Third-Party Testing + Mill Certificates | Grayling Jewelry
For more information regarding Grayling's mill certificates, check out this article regarding our third-party verified titanium jewelry.
You can find additional information from the Association of Professional Piercers here.
ASTM F136 Titanium
Page 1: ASTM 136 Titanium Third-Party Material Analysis 
Page 2: ASTM 136 Titanium Third-Party Material Analysis
14K Gold Mill Certificates (Yellow + White)
Page 1: Solid Gold Third-Party Material Analysis
Page 2: Solid Gold Third-Party Material Analysis
Page 3: Solid Gold Third-Party Material Analysis
