David K. Joyce Minerals

Grenville -Corundum Localities

There are a number of localities in the Grenville where you can find well formed crystals of corundum, one of the hardest minerals known. These occurence are all nepheline syenites that have zones of corundum crystals, usually elongate, tapered crystals. For a number of years Canada (Southern Ontario) was THE prodcer od corundum for the world. Here are some examples from some of the mines and prospects.

All prices in Canadian dollars. For payment in US$, deduct 18% or multiply by 0.82.

Click on any of the following thumbnails to view a larger image of the specimen.

CorundumGrenville -Corundum Localities
  • Item #6429
  • Corundum
  • 4.7x3.8x2.5 cm
  • Largest Crystal Size: 19mm
  • $25.00
  • Gutz Farm
  • Combermere
    Ontario, Canada
  • A very thin, slightly tapered, singly terminated corundum crystal in nepheline syenite.
CorundumGrenville -Corundum Localities
  • Item #6436
  • Corundum
  • 4.8x4.0x5.0 cm
  • Largest Crystal Size: 21mm
  • $20.00
  • Gutz Farm
  • Combermere
    Ontario, Canada
  • A couple of crystal sections of sharp, elongate corundum crystals are exposed at the front of this specimen.