Gem Island is a Island located in Muskoka, Ontario and has an elevation of 240 meters.

• Latitude: 45° 1' 38'' North   (decimal: 45.0272222)
• Longitude: 79° 35' 5'' West   (decimal: -79.5847222)
• Topography Feature Category: Island
• Geographical Feature: Island
• Canadian Province/Territory: Ontario
• Elevation: 240 meters
• Location: Muskoka
• Atlas of Canada Locator Map: Gem Island
• GPS Coordinate Locator Map: Gem Island Lat/Long