Probably not by a long shot. Just in our visible universe alone there are 100 billion galaxies each with a few billion stars on average so that gives you 10^20 stars. A grain of sand is perhaps 1 millimeter in diameter and weighs 0.003 grams, so this gives you 3 x 10^17 grams for the anticipated beach sand. The mass of the Earth is 6 x 10^27 grams, but most of this is in the interior of the earth, not on continental shelves or ocean bottoms. The 'critical' amount of beach sand would have to weigh 1/2 billionth of the mass of the Earth.
If the universe is infinite, then the answer is a flat NO.