Question

find the appositive. if it is nonrestrictive, set it off with commas. if it is restrictive, submit the text without making any changes.diamonds precious gems renowned for their dazzling sparkle are formed when carbon atoms undergo extreme pressure at high temperatures, usually around one hundred miles below the surface of the earth.

Explanation:

The phrase "precious gems renowned for their dazzling sparkle" is a nonrestrictive appositive that adds extra, non-essential descriptive information about diamonds. Nonrestrictive appositives need to be set off with commas from the main clause.

Answer:

Diamonds, precious gems renowned for their dazzling sparkle, are formed when carbon atoms undergo extreme pressure at high temperatures, usually around one hundred miles below the surface of the earth.