1. set with or adorned with diamonds; decorated with diamonds
Usage: often used in literary or poetic contexts
2. having the shape or pattern of a diamond; arranged in a diamond formation
Usage: less common; may appear in technical or descriptive contexts

Examples

• The queen wore a diamonded tiara that sparkled under the ballroom lights.
• Her diamonded engagement ring was the centerpiece of the jewelry collection.
• The diamonded brooch had been passed down through three generations.
• The evening gown featured a diamonded pattern across the bodice.
• He presented her with a diamonded necklace for their anniversary.