Lac Diamond is a Lake located in Saint-Étienne-des-Grès; Maskinongé, Quebec and has an elevation of 75 meters.

• Latitude: 46° 24' 25'' North   (decimal: 46.4069443)
• Longitude: 72° 46' 47'' West   (decimal: -72.7797222)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 75 meters
• Location: Saint-Étienne-des-Grès; Maskinongé
• Atlas of Canada Locator Map: Lac Diamond
• GPS Coordinate Locator Map: Lac Diamond Lat/Long