Pretty sturdy product, most effective for gem stability (prongs never bend or break simply) Might be high-priced As indicated before, Along with the absorption cross portion increase with concentration, the FWHM of the 450 nm peak also raises significantly with focus. How do I Activate Yellow Sapphire? Activating Yellow Sapphire https://www.tumblr.com/thegemjournal/759696203354128384/understanding-the-unique-characteristics-of-yellow?source=share