綺 means beautiful (the 綺 in kirei) and is a JLPT N1 kanji. It has 14 strokes and uses the thread radical (糸).
Stroke order · 14 strokes
On'yomi (音読み)
キ
Kun'yomi (訓読み)
あや
Radical
糸 · thread
Strokes
14
How to remember 綺
Thread (糸) woven into something extraordinary (奇) — fine handiwork. 綺麗!!! — the most-used compliment in Japanese; now you've learned the kanji behind it too!