The Ruby (L.1333) occurrence is located approximately 5 kilometres south of Greenwood and 1 kilometre east of Boundary Falls, in what the early prospectors referred to as Smith's Camp.

The area is underlain by greenstone, limestone and sharpstone conglomerate of the Triassic Brooklyn Formation and chert, siliceous argillite and siliclastic rocks of the Devonian to Permian Knob Hill Group. These have been intruded by microdiorite dikes of the Eocene Coryell Plutonic Suite and Middle Jurassic Providence Lake Complex.

Locally, pyrite and chalcopyrite occur as massive fracture fillings, up to 5 centimetres wide, in northeast–dipping argillite beds, boulder conglomerates and skarn development associated with interbedded limestone and greenstone at the contact with a porphyritic granite. Malachite and azurite alteration are also reported. The mineralization has been exposed in at least six sites over an area of approximately 100 by 150 metres with widths up to 12 metres.

In 1961, a random chip sample of oxidized material from a trench yielded 0.5 gram per tonne gold, 15.4 grams per tonne silver and 2.57 per cent copper with 1.02 per cent copper oxide, whereas a chip sample from the wall of the southern shaft assayed 6.8 grams per tonne silver and 0.35 per cent copper (Property File - D. Irving [1961-05-01]: Chain and Compass Survey - Ruby Mine).

In 1969, sampling yielded up to 1.47 per cent copper over 12 metres at site 1; 3.37 per cent copper over 6 metres at site 2; grab samples yielding up to 27.88 per cent copper, 19.39 per cent copper with 297.5 grams per tonne silver over 1.5 metres from site 3, 1.15 per cent copper over 1.5 metres at site 4, 1.40 per cent copper over 2.4 metres at site 5 and 10.50 per cent copper over 0.45 metre at site 6 (Property File - Pierre G. Lacombe [1969-04-28]: Report on the Ruby Claims).

The claim was located and worked part time prior to 1896. In 1900, the claim was Crown granted to G. Cook and W.G. McMynn and, subsequent to the discovery of good ore grade mineralization, two adit tunnels were initiated on a copper-silver skarn. The first tunnel was driven 50 metres and the second 18 metres, 46 metres below the first. In 1901, a shipment of 77 tonnes of ore was reported. Little additional work was done until 1941, when George Boag and partner leased the property and reconditioned the tunnels. In 1956, Edward Cooke made a shipment of 28 tonnes of clean-up ore yielding 0.591 kilogram of silver and 856 kilograms of copper.

In the early 1960s, the property was acquired by Rubymac Mines Limited and a program of rock trenching and pitting, along with a shallow shaft, was completed. Later, in the 1960s, Bralorne Mines completed a single drillhole, totalling 60 metres. In 1963 and 1969, the area was examined by P.G. Lacombe.