One of the most famous localities for Lazulite is Graves Mountain, Lincoln Co., Georgia, which produced well-formed blue crystals embedded in a crumbly Quartz matrix. The locality of Rapid Creek (and nearby Crosscut Creek), in the Yukon Territory of Canada is also well-known for its outstanding transparent dark blue Lazulite crystals. - See more at: http://www.minerals.net/mineral/lazulite.aspx#sthash.XdunCSII.dpufn.