很多刚入门的藏家会问：拿到一只青花碗，能不能不送检，就大致判断它属于清代哪个时期？
可以。对清代民窑青花来说，釉面、胎质、发色这三项，已经能帮你把大部分常见器物放进一个合理的时间区间。
一、釉面：先看“亮”还是“润”
- 顺治至康熙早期：釉色多青白，釉面较厚，光泽偏硬。
- 康熙中晚期：釉面温润，俗称“紧皮亮釉”。
- 雍正、乾隆：釉面更细腻均匀，白度提高。
- 嘉庆以后：釉层趋薄，光泽变弱，部分出现“波浪釉”。
二、胎质：重点看底足露胎
康熙民窑胎土淘洗较细，露胎处白中带一点糯；乾隆以后部分民窑胎土含杂质增多。康熙常见二层台底、泥鳅背；晚清常见平底、斜削足。
三、发色：青花的“蓝”里藏时间
- 康熙：翠蓝、层次分明，有“墨分五色”的分水效果。
- 雍正、乾隆：柔和稳定，蓝中带灰。
- 嘉庆至道光：蓝中泛灰更明显，部分发色漂浮。
- 晚清民国：洋蓝，发色艳而单薄，泛紫。
三项要合起来看
釉面温润、底足二层台、发色翠蓝带分水，大概率落在康熙中晚期至雍正。釉面偏薄泛白、底足斜削、发色洋蓝泛紫，则更可能是晚清民国。
New collectors often ask: can you roughly date a blue-and-white bowl without thermoluminescence?
Yes. For Qing folk kiln blue-and-white, three basics — glaze, body, pigment tone — can place most common pieces in a reasonable time range.
1. Glaze: bright or soft?
- Shunzhi–early Kangxi: bluish-white, thicker, harder sheen.
- Mid–late Kangxi: softer, known as "tight skin, bright glaze".
- Yongzheng–Qianlong: finer and whiter.
- Jiaqing onward: thinner glaze, weaker sheen, sometimes "wave glaze".
2. Body: read the exposed foot
Kangxi folk kiln bodies are finely washed, with exposed clay white and slightly rice-like; after Qianlong, some bodies contain more impurities. Kangxi often shows a two-tier foot and eel-back; late Qing often has a flat base and slanted-cut foot.
3. Pigment tone: the blue tells time
- Kangxi: crisp blue, layered, with "five shades of ink" shading.
- Yongzheng–Qianlong: softer and stable, grey-blue.
- Jiaqing–Daoguang: more obvious grey, some floating colour.
- Late Qing–Republic: "foreign blue", bright and thin, purplish.
Combine all three
Soft glaze + two-tier foot + layered cobalt → mid–late Kangxi to Yongzheng. Thin whitish glaze + slanted foot + purplish blue → late Qing–Republic.
