Sugerman Lake Michigan Blue with Gold Lake Michigan Blue / Polarized / 55-21-145MM

Leland Blue: Manmade (not quite on purpose) and in limited supply

The past and future of Lake Michigan's colors

Sugerman Lake Michigan Blue with Gold Lake Michigan Blue / Polarized / 55-21-145MM

Michigan's Upper Peninsula glows in sunrise photo from NASA

Leland Blue Stone Pendant, Blue Slag Glass Jewelry, Lake Michigan

Breathtakingly Beautiful Michigan Blue Ice Photos

John La Farge Welcome: Stained Glass Window from the Mrs. George

Treasure hunters say they have found Confederate gold in Lake

Lake Michigan's Hidden Gems: Railroad Marbles – Beachcombing Magazine

Treasure hunters say they have found Confederate gold in Lake

Treasure hunters say they have found Confederate gold in Lake

Leland Blue Stones (slag) and other Northern MI. beach stones.

Why does Lake Michigan look deep blue? - Quora