The Humm and Toby claims are located on southern ridge of Hulme Peak, between Toby and Topaz Creeks. From 2003 to 2005, the claims were explored as a part of the Kootenay Gemstone property of Cream Minerals Ltd., including the Laib Creek, Rusty and Cultus showings to the north.
The area is underlain by granites and granodiorites of the middle Cretaceous Bayonne Batholith (Shaw Creek stock) and sediments of the La France Group and Middle Aldridge Formation. Pegmatites cut all rock types and host beryl crystals.
Locally, the area straddles the contact between the Shaw Creek stock and the Mount Nelson Formation and pegmatite dikes are hosted predominantly within metamorphosed sediments of the Middle Aldridge Formation. Medium grey quartz feldspathic biotite-muscovite schists with rare kyanite are most common. Lesser volumes of dark grey biotite-amphibole± garnet schists may be interlayered with the above.
The main showing contains bluish-green beryls, some with significant gemmy sections. The largest beryl collected to date is a euhedral, hexagonal, translucent crystal with dimensions of 4.0 by 0.8 centimetres (Assessment Report 27850).