na-adjective, noun which may take the genitive case particle 'no', noun
fine quality; high-grade; superior
Describes materials, products, or services of excellent quality. Used as a noun, na-adjective, or no-adjective.
この店は上質な革製品を扱っている。
This shop deals in fine-quality leather goods.
上質のワインを一本選んでください。
Please choose a bottle of high-quality wine.