晶 is a Chinese hanzi, listed here under the keyword “crystal”. It is built from 日 (sun) and 昍 (昍). It appears as a component in 6 other characters in this index.
On KumiJi Glyph Explorer, open the parts search and type “sun” + “昍”. 晶 is among the results, together with every other character containing the same shapes.
Open 晶 in the interactive kanji search
to expand every part down to its smallest pieces, add your own names and mnemonic stories,
or search for other characters by their parts.