Particulars:
The chain is 17.5 inches from end to end.
The heart charm is a tad less than 7/8 of an inch at its widest ends.
Metal & Hallmarks:
Tiffany & Co. / 925 (on both the heart charm and the chain clasp)
Solid 925 sterling silver
Please check out my other unique and interesting Tiffany items on sale.