The term 'Like a Diamond' can be represented by two crossword solutions: RHOMBIC (7 letters) and HARD (4 letters). A rhombic shape is a diamond-like shape with four sides of equal length and four angles of equal measure. It is also known as a rhombus. Hardness is a measure of how resistant a material is to scratching, abrasion, or other forms of damage. Diamonds are the hardest known natural material, making them highly resistant to damage. Therefore, the phrase 'Like a Diamond' can be used to describe something that is both rhombic in shape and HARD in nature.