What the glaze-layer names tell you
Underglaze and overglaze describe where decoration sits in relation to a ceramic glaze. Underglaze painting goes beneath the glaze; overglaze color is applied above an already glazed and fired surface, then fired again at a lower temperature. These terms help you read a craft description when choosing painted teaware.
Aurioo’s Sword Kiln Blue Bamboo cup explicitly lists underglaze painting. The Red Green Fish gaiwan lists red and green overglaze enamel. Both use jade clay porcelain, so their decoration gives you a different comparison from the material question covered in What Is Porcelain Made Of?.
Blue bamboo on the Sword Kiln cup
The Sword Kiln Blue Bamboo tea cup is hand-thrown porcelain with hand-painted underglaze blue bamboo detail. Its photograph shows dense blue leaves, fine stems and open white areas wrapping around the bowl. Choose this design if you like a painting built around one blue palette.
It is a drinking cup supplied as one piece, with a listed capacity of 130 ml, a diameter of 9 cm and a height of 5 cm. Check that 9 cm diameter against the space available beside your brewing vessel. Brush placement, glaze tone and small measurements may vary between handmade pieces.
Overglaze color on the Red Green Fish gaiwan
The Red Green Fish gaiwan has fish and aquatic plant brushwork across a bowl and lid. Its craft description identifies hand-painted blue-and-white porcelain with red and green overglaze enamel, a high-fired porcelain body and a second firing for the color at a lower temperature.
The close view makes the fish scales and plant details easier to study. That photograph shows the design; the listing establishes the process. The gaiwan is supplied as a bowl and lid, with an approximate capacity of 150 ml. Its listed diameter is 9 cm and height is 8 cm. Use the lid to control the pour when brewing.
Compare the decoration and the pieces
| Detail | Sword Kiln Blue Bamboo cup | Red Green Fish gaiwan |
|---|---|---|
| Listed craft | Hand-painted underglaze blue bamboo | Blue-and-white porcelain with red and green overglaze enamel |
| Material | Jade clay porcelain | Jade clay porcelain |
| Included pieces | One tea cup | One gaiwan bowl and one lid |
| Listed capacity | 130 ml | Approximately 150 ml |
| Tea-table role | Drinking brewed tea | Brewing tea and controlling the pour with the lid |
Start with the missing piece in your setup. If you already have a brewing vessel and want a painted drinking cup, the bamboo cup fills that role. If you need a lidded brewing vessel and prefer the fish design, look at the gaiwan. Their capacities describe the vessels; they do not establish how much tea a session will yield.
For a coordinated table, compare the restrained blue bamboo with the fish gaiwan’s red and green detail. Either can sit alongside plain porcelain cups or serving pieces. Choose the balance of color you enjoy seeing during a tea session.
Care follows the individual listing
The bamboo cup’s instructions call for gentle rinsing and drying after use. The fish gaiwan calls for gentle hand rinsing and full drying before storage. Follow those directions for these pieces. A decoration label alone does not establish dishwasher or microwave suitability.
Frequently asked questions
Does blue-and-white always prove that a piece is underglaze?
Read the craft description. Blue-and-white describes an appearance, while underglaze identifies the decoration’s position. The Sword Kiln cup’s listing explicitly confirms underglaze blue bamboo; a product name or photograph alone cannot confirm that process.
Can one porcelain piece combine underglaze and overglaze?
Yes. Mud and Leaves’ guide to painted porcelain explains how some designs combine methods. For an individual piece, use its stated craft details. Aurioo identifies overglaze enamel on the fish gaiwan without assigning it a named historical painting style.
Does overglaze mean that the decoration is hand-painted?
The terms answer different questions: overglaze locates the decoration, while hand-painted describes how it was applied. Both Aurioo listings here explicitly say hand-painted. Check for that separate wording when comparing other pieces.
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[…] coordinated group can still contain pieces from different listings and making processes; our guide to underglaze and overglaze decoration explains why blue-and-white appearance alone does not describe every production […]