The crossword solutions for the term PERFECT INSTANCE are GEM, which is a 3 letter word. A GEM is a precious or semi-precious stone that is cut and polished to be used in jewelry or other decorative items. Gems are often valued for their beauty, rarity, and durability. They can also be used to symbolize love, friendship, and loyalty. A perfect instance of a GEM would be one that is flawless and of the highest quality.