Fake and adulterated oud is widespread, and almost every serious buyer eventually asks the same question: how do I know this is real, and what am I actually paying for? This hub covers grading systems, resin testing, and the practical checks that separate genuine agarwood from synthetic or misrepresented material.
The checks to run, the most common ways agarwood is misrepresented, and the oil question every buyer runs into.

Practical checks you can run on a piece of agarwood or oud oil before you commit to a purchase, what each test actually tells you, and where home testing reaches its limits.
Read the full guide →The most common ways agarwood and oud oil are misrepresented, from synthetic blends sold as pure oud to wood that has been artificially weighted or dyed.
Read →How the two actually differ, and why the distinction matters more for oil than for raw wood.
Read →The factors behind grade, and the regional systems traders actually use.
The factors that determine grade across the industry, and how to make sense of grading terms before comparing specific systems.
Read →The sinking test, resin percentage, and why resin content sits at the centre of almost every grading conversation.
Read →How Vietnamese traders commonly grade agarwood, and why kỳ nam is treated as a category of its own.
Read →How Gulf traders commonly classify oud, using trade terms such as Double Super.
Read →What happens before oud oil reaches a bottle, and why two similar bottles can cost very different amounts.
The principles behind every guide in this hub.
Move on to using agarwood well, or go straight to the buying guide.