AI overview
I can see from your context that the "Diamond Sutra" is a Mahayana sutra, but this single categorization doesn't provide enough specific information for me to write an accurate and substantive 2-sentence overview for a general reader. To avoid inventing facts, I would need additional details about what the text teaches, its historical significance, or its importance within Buddhism.
AI-generated from the Wikipedia summary — may contain errors.
Article
The Diamond Sūtra (Sanskrit: Vajracchedikā Prajñāpāramitā Sūtra) is a Mahāyāna Buddhist sutra from the genre of Prajñāpāramitā ('perfection of wisdom') sutras. Translated into a variety of languages over a broad geographic range, the Diamond Sūtra is one of the most influential Mahayana sutras in East Asia, and it is particularly prominent within the Chan (or Zen) tradition, along with the Heart Sutra.
A copy of the Tang dynasty Diamond Sūtra was found among the Dunhuang manuscripts in 1900 by Daoist monk Wang Yuanlu and sold to Aurel Stein in 1907. It dates back to May 11, 868 CE and is broadly considered to be the oldest extant printed book, although other, earlier, printed materials on paper exist that predate this artifact. It is in the collection of the British Library.