Granite was produced from two abandoned quarries on the southwest shore of Hardy Island at the south end of Jervis Inlet.

The Hardy Island quarries are developed in granodiorite of Jurassic age within the Jurassic to Tertiary Coast Plutonic Complex. The rock is similar in appearance to stone from the Nelson Island quarries (092F 189), weathering grey to black. On fresh surfaces it is medium to coarse-grained with a uniform light grey appearance. The stone is comprised of feldspar, quartz, biotite and hornblende. Black knots up to 30 centimetres are common and pyrite and chalcopyrite are frequently noted.

The lower quarry has an opening approximately 100 metres long with faces between 2 and 23 metres high. The upper quarry has an opening 95 metres wide by 5 to 18 metres high and has been advanced north along a northeast set of steeply dipping joints. Joints and fractures in both quarries are widely spaced (greater than 1 metre apart) and potential reserves of stone exist. Physical properties are as follows (CANMET Report 452, p. 93):

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Specific gravity 2.703

Crushing strength (dry) (lbs/sq.in.) 32,288

Transverse strength (lbs/sq.in.) 1,453

Shearing strength (lbs/sq.in.) 1,393

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This quarry was operated in the early 1900's by Sechelt Granite Quarries Ltd. The stone was used for the construction of breakwaters in Vancouver and Victoria but no production figures are available.