https://www.jhuapl.edu/technical-digest/issues/vol-37-no-4-2025/simulants-chemical-and-explosive-threats
Simulants for Chemical and Explosive Threats | Johns Hopkins University Applied Physics Laboratory
johns hopkins universityapplied physicssimulantschemicalexplosive
https://www.gemsociety.org/article/how-to-identify-ruby-simulants-and-synthetics/
Ruby Simulants and Synthetics ID Guide - Gem Society
Dec 11, 2025 - With practice and some basic tools, anyone can separate natural rubies from ruby simulants. Learn all about the most common lookalikes here.
rubysimulantssyntheticsidgem