Agarwood Grading: From Ban-tou & Diao-kou to Kyara
Beginners often think "sinks = high grade". Grade is a composite: resin density, aroma layering, origin and formation type together set value. Terms like ban-tou (flat wound on trunk), diao-kou (broken-branch resin) and insect-bored describe the wound's position and shape, not an absolute rank. Compare in the 沉香百科.
From ordinary resin to kyara
Ordinary resin rises as oil and aroma grow richer; when resin is extremely dense, strongly fragrant at room temperature and sticky-sweet when chewed, it enters kyara (qinan) — the apex. But "kyara" is badly overused; demand testing and provenance, see the 奇楠支柱页.
The right grading mindset
Rather than memorize names, train your nose: build a sweet/cool/floral/fruity/medicinal/milky coordinate system and judge by scent. Any grade must meet scent-real, traceable, testable — more in 鉴定支柱页.
(This is industry observation and popular-science summary, not investment advice. Buy agarwood through legal channels with traceable, testable sources.)
Compiled for general knowledge; traditional references are cultural notes, not medical advice.
常见问题
Agarwood Grading是什么？
Grade is not just "sinks or not". From ban-tou and diao-kou to insect-bored and kyara, this piece maps the trade's grading coordinates so you judge by scent and resin, not labels.
新手入门沉香要注意什么？
新手应先明确用途（品闻、佩戴或收藏），从可信渠道的线香、香粉等低成本品类入手，先建立嗅觉记忆，再逐步了解产区与等级，避免一开始追高。
沉香怎么选购？
选购沉香应认准可溯源、可检测的渠道，按用途选择形态（线香 / 手串 / 原料），不盲目追高、不轻信「野生」「沉水」等夸大宣传。
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