The phrase "a pebble of" is correct and usable in written English.
It can be used metaphorically to describe a small, insignificant part of something larger or to convey a sense of something minor within a broader context.
Example: "In the vast ocean of knowledge, each book is just a pebble of wisdom waiting to be discovered."
Alternatives: "a fragment of" or "a morsel of".
If you are looking for progress, Game 4 between Philadelphia and Pittsburgh produced a pebble of it.
'This is what I brought my being down to.' He holds up a pebble of crack between thumb and forefinger.
When Lisa Figueroa comes across a pebble of quartz -- a stone some believe has healing powers -- she pockets it to later place on the windowsill of one of her horses' stalls.
He said his goal was to drop a pebble of hope into a calm lake to reach the shores of peace, but he also invited newspapers, wire services and TV stations within a 60-mile radius and across Long Island Sound, using an encouraging message from Archbishop Desmond Tutu as bait.
The story, set in Louisiana in the early 1960's, has a pebble of a plot -- a young white boy's stepmother tries to teach him respect for money by telling the family's black maid to keep whatever change he leaves carelessly in his pockets -- but it resonates as though it had been dropped in a pond.
Most whistleblowers start with a pebble of truth from isolated but in-depth knowledge, and hope that with solidarity, more will join, until their pebble turns into an avalanche.
He says Carl Jung once claimed that if you collected a sample of 1,000 pebbles, you could calculate the average weight of a pebble on the beach.
If you add a pebble to a collection of pebbles, you no longer have the same number.
A micrometeorite is a tiny pebble of space debris, normally defined as any object that weighs less than a gram, or measures under two millimeters.
The sixth: a "pebble" made of whipped Parmesan with a cocoa-butter and black-truffle-oil shell.
The explosion was very near, the shelfter shook and a pebble fell of f the ceiling.
