This butterfly has beautiful spots on its wings.
You can see a mottled pattern on the surface of the stone.
模様 is a general term for any pattern or design, not limited to spots or mottling.
Standard kanji spelling for spotted or mottled patterns.
Rarely used kanji form; 文 can mean 'pattern' but is uncommon here.
Compound of 斑 (はん, 'spot, speckle') and 紋 (もん, 'pattern, crest'). The kanji combination directly conveys a spotted pattern.