diamondseeker2006|1365563181|3423786 said:Oh, love those!!! WF did a great job with the studs! They are made like the real Tiffany ones with the rounded back. I like that a lot!
Except, Tiffany applies multiple treatments to its sapphires whereas I specified with these WF sapphires that the only acceptable treatment was traditional heat, with which they complied. I think all their sapphires are heat-only.
I've shared a link to Tiffany's Gemstone booklet below, which outlines the gemstone treatments it accepts. Sapphire is cleverly hidden under "Corundum, Blue" and it says, in addition to heat, "Infused with colorless substances to improve color and clarity." And for yellow sapphires, they use diffusement treatments in addition to infusing and heating!
http://www.tiffany.com/shared/pdfs/carebooklet.pdf?v=2012
For this reason I wouldn't buy gemstones from Tiffany unless their guidelines state no treatments or heat only.