Gorgeous Tanzanite. Perfect in every way. Truly a top quality stone. Top color with great cutting and clarity. You won't find a nicer Tanzanite at this price anywhere else. This stone has a strong purple secondary color that didn't come through as strongly in the pictures as it is in real life. This stone comes with the pictured verification report from GIA, the world's foremost gemological labratory. GIA certifications cost upwards from $125 and are considered the highest authority on Diamonds and colored gemstones. If you scan the QR code and click the tab "Treatment" you will see the somewhat cryptic statement that "Color origin cannot currently be determined." We included a picture. Let's break down what that means. Nearly all Tanzanites are gently heated to bring out their full color. Most of the time, this happens in a lab, where Tanzanites are gently baked to remove their brown tones. But sometimes, after the stones have formed inside the earth, they're exposed to additional heat while still inside the earth. The same processes that form the Tanzanites can expose them to additional heat and change their color. Because of that, it's impossible to determine whether a Tanzanite was heated in a lab or exposed to additional heat inside the earth. GIA could probably find a less cryptic way to say that. But instead, they simply say that the color origin cannot currently be determined. Hope that helps! For Proxibid bidders, shipping is a flat rate of $6, no matter how many lots won. For Live Auctioneers bidders, shipping will be calculated automatically by Live Shipping and all winnings will be combined into a single package for one low rate.