Gemstones are millenia in the making, but sometimes it takes a while for us to find them. In the case of the brilliantly blue, color-changing tanzanite, we've only been aware of its existence for a little over fifty years. Discovered by a Maasai herdsman in Tanzania in 1967, and quickly adopted by Tiffany & Co. as the star of a new jewelry line, tanzanite has been one of the darlings of jewelers who are drawn to saturated, nuanced colors. A stunning 25.38 carat tanzanite is the centerpiece of a Tiffany brooch being offered in our Important Fall Auction
, and so here we let you in on what you need to know to understand the singularity of tanzanite.