唯一無二

1. Origins, structure, and basic meaning

• Structure: 唯一無二, read ゆいいつむに, describes something as unique and impossible to replace.
• Basic usage: The pattern appears in 唯一無二の模様 and 唯一無二の宝物, with の carrying the description onto the following noun.

2. Common pitfalls and similar expressions

• What 唯一無二の describes
  • The uniqueness applies to the following noun, such as 模様 or 宝物; that noun is not part of the fixed expression.