How the gram price is derived
Although Canadian shops quote per gram, the global market quotes gold in US dollars per troy ounce. One troy ounce equals exactly 31.1034768 grams, so the pure gold (24K) gram price is the ounce price divided by 31.1034768, converted to CAD at the live exchange rate. Lower purities are then a simple multiplication: 22K/916 is the 24K gram price × 0.9167, and 18K is × 0.75.
Canadian dealers quote in Canadian dollars per ounce and per gram, converted from the international USD spot price at the live USD/CAD rate. The Royal Canadian Mint's 9999 Gold Maple Leaf is the country's flagship bullion product.