Search archive.org for "Rasaratnakara Nagarjuna". You will find scanned versions of the Sanskrit text (usually Devanagari script) published in 1910 or 1930.
If you need the Rasaratnakara for academic or personal study, you have three legal options that are better than pirated PDFs: Rasaratnakara Book In English Pdf
While a direct "download button" for a modern, glossy English PDF is not legally common due to copyright restrictions, older translations and critical editions are available through academic archives. Search archive
The text is attributed to the sage Nagarjuna (often referred to as Rasavidya-Nagarjuna to distinguish him from the Madhyamaka Buddhist philosopher). While the exact dating is debated, it is generally placed between the 8th and 9th centuries CE. Nagarjuna is considered the father of Indian alchemy, and this work is his magnum opus. The text is attributed to the sage Nagarjuna
Subject: Overview, Significance, and Availability of English Translations of Rasaratnakara.
Date: October 26, 2023