The phrase "average stone" is correct and usable in written English.
It can be used to describe a typical or standard type of stone, often in contexts related to geology, construction, or materials.
Example: "The average stone used in the construction of the building was granite, known for its durability and aesthetic appeal."
Alternatives: "typical stone" or "standard stone".
27 Parliament Street, +44 (0)151 707 7747; thisisleaf.co.uk Cheap, reliable homemade pasta dishes and above-average, stone-baked pizzas have made The Quarter one of Liverpool's busiest and best-loved restaurants.
The two crews were the heaviest in Boat Race history, Oxford averaging 14 stone 8 lbs (92.3 kg) per rower, nearly 7 pound a man heavier than the Cambridge crew, and were pre-race favourites to win an eighth consecutive race.
Against a pack heavier by an average of a stone per man, Bath never looked at ease in the scrum or the loose, while their lineout was a shambles.
The Stones' average age is 68.
Stone's panel study also estimated an 18% average crop yield increase (Stone, 2011b).
Yet the average person in the Stone Age knew what to do with stones more than people in the plastic age.
By the 1980s, the four people who, on average, leapt from its stone balustrades each year accounted for half of all jumping suicides in the nation's capital.
Players are now on average more than a stone heavier (7.2kg) than they were 20 years ago, and the force of their collisions can be the equivalent of what the body experiences in a car crash.
The suspense heightened today as the Dow Jones Industrial Average came within a stone's throw of the 10,000 mark, only to pull away again in late-session trading.
Using field mapping data and integrated parameters averaged over a circular stone holder area (Rh=7 mm), close logarithmic correlations between the average peak pressure (P+ avg)) incident on the stone (D=10 mm BegoStone) and comminution efficiency after 500 and 1000 shocks have been identified.
