Gemma Watering Stones Ltd. produces horticultural grade pumice from raw pumice mined in British Columbia, Canada. The deposit yeilds pumice of 66% silica and 16% alumina, with a pH of 7.0, MOHS hardness of 5.5, creamy white colour and a liquid absorption capacity of 40%.


Gemma Watering Stones Ltd.
8334 26 Ave. S.W.
Calgary, Alberta, Canada
T3H 3W2

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Phone (403) 246-3306
Fax (403) 246-3877
Toll Free 1-866-743-6226
email info@gemma.ca

Visit our online store for flexible planter liners, water test tube kits, Gemma Planters and 'Watering Stones' ( orchid media.)
We sell horticultural pumice stone at our location and in some garden centres in the local Calgary area.