Through arrangements with Eastman Kodak, Inc. The Gem Dugout now distributes silver behenate, C₂₂H₄₄O₂·Ag, for use as an X-ray diffraction low-angle reference material. This material, with its layer spacing of 58.38Å provides a means to calibrate the angle range for CuKalpha from 1.5 to 20 °2theta. The material is available in 4 gram aliquots only. For use of this material consult the following reference: Blanton, T. N., et al. (1995) JCPDS-International Centre for Diffraction Data round robin study of silver behenate. A possible low-angle X-ray diffraction calibration standard, Powder Diffraction, v10, 91-95.

This material is a natural gem grade material from Brazil with a primitive cubic cell that fills the need of more peaks than silicon for calibration of the 2theta scale. It has the nominal composition of Na₄Si₃Al₃O₁₂Cl and a cell parameter of 8.8799±0.0001Å.