• by vinux

Purple sand teapot is a tea-drinking tool that has been greatly loved by tea-lovers for generations. Porcelain tea sets are also very popular with tea drinkers, so do you know what the difference is between purple sand and porcelain? Let’s talk about it today. The main difference between these two materials is their texture. Purple sand is made of fine clay and quartz particles, while porcelain is made from feldspar and quartz. As a result, purple sand has a rough texture while porcelain has a smooth finish. In terms of heat resistance, both materials are fairly durable but purple sand can withstand high temperatures better than porcelain. In terms of price, purple sand teapots tend to be more expensive than porcelain teapots because they require more skill to produce and take longer to craft.

Let’s first sort out the concepts of purple sand and porcelain.

Purple sand, which is a semi-sintered fine “kilnware” between ceramics and porcelain, has an elegant color, light but not bright, rough but not rough, good air permeability, and no glaze inside and outside. Because its mineral source is in Yixing of the pottery capital, it was historically classified as part of pottery.

Ceramics, in a nutshell, are ceramics with glazed surfaces. Porcelain teapots are hard and white, glazed inside and out, and the glaze is lush and colorful. The material of ceramics is kaolin clay and there is a large storage in Jingdezhen, so Jingdezhen of Jiangxi Province is known as the porcelain capital of China.

Below is the difference between pottery tea sets and porcelain tea sets:
1. Appearance: Pottery tea sets have a rustic charm and appear more natural, while porcelain tea sets have a smooth and glossy texture.
2. Price: Generally speaking, pottery tea sets are cheaper than porcelain tea sets because of their simpler production process.
3. Materials: Pottery is made from clay, while porcelain is made from kaolin clay and feldspar.
4. Durability: Porcelain is much stronger than pottery and has higher heat resistance, making it less likely to crack or chip when exposed to hot liquids or temperatures.

Original: こんにちは!

Translation: Hello!

Creating different clay recipes

Looking at the clay used in making, both are “earth”.

However, the mineral composition of purple sand clay is of the type containing rich iron clay-quartz-mica. The purple sand clay has good plasticity, relatively low drying shrinkage rate, high green strength, good permeability, wide temperature range for firing and other characteristics.

Purple Clay Mud (Celestial Blue Mud)

Porcelain pots are an aggregate composed of minerals such as quartz, mica, kaolin, and feldspar, which contain more glass in their minerals and have weaker shrinkability and plasticity than purple sand.

Ceramic clay (kaolin)

私はいつも幸せな気持ちを持っている

I always have a feeling of happiness.

The temperature of burning varies.

The temperature at which a purple-clay teapot is fired is generally between 1160°C and 1200°C, while that of a porcelain teapot is around 1200°C to 1400°C, which is much higher than the firing temperature of a purple-clay teapot.

The difference in firing temperature between a purple clay teapot and a porcelain teapot also brings certain differences to the finished product. The body of pottery has not been completely fired, while the body of porcelain has been completely vitrified.

Purple Sand Pot

The finished purple clay pot makes a dull sound when struck, and the hardness is poor. However, when the finished porcelain pot is struck, it emits a crisp, melodious and loud sound, with strong hardness; it is difficult to leave a knife mark on its surface with a steel knife.

A teapot made of porcelain.

Original content: 学校で友達を作るのが楽しい。

Translation: Making friends at school is fun.

The glazes are different.

Purple sand pot has a unique structure of air holes. It not only has good air permeability, but also can preserve the aroma of tea. Therefore, purple sand pot remains antique and no glazing is needed. This makes the advantages of purple sand pots incomparable to other ceramics.

Purple Clay Teapot

Ceramics must have glaze, but its air permeability is not as good as that of purple sand teapots. There are two kinds of glazes for ceramic tableware. It can be fired at high temperature once with the body, or it can be hung with low-temperature glaze on the high-temperature plain-fired body and then fired at low temperature for the second time.

A ceramic teapot.

Original:
この本の中には複数の物語があります。

Translation: This book contains several stories.

Transparency differs

Purple sand pots do not have the characteristic of transparency, even thinly like an eggshell, it cannot be transparent; however, no matter how thick or thin a porcelain pot is, it has a semi-transparent feature.

Heureka! J’ai trouvé la solution.

Eureka! I found the solution.

Practical functions differ.

Purple sand pot is suitable for personal brewing certain types of tea (mainly like Pu’er, Tie Guan Yin, black tea, etc.). With its double-layer porous structure and good air permeability, it will not go bad in hot weather overnight and can withstand sudden changes of temperature, which can bring out the real flavor of the tea.

The porcelain teaware does not absorb flavors, making it suitable for entertaining guests, and is easily cleaned. Its capabilities for making tea and its flavor are slightly inferior to those of a purple clay teapot.

My favorite hobby is playing basketball.

My favourite pastime is shooting hoops.

The product has a different appearance.

The shapes of purple sand teaware are varied and beautiful, plain and sincere, calm and restrained. The longer they are used, the brighter their color and luster, giving them a warm and graceful charm.

The porcelain tea sets are exquisitely shaped and beautifully colored, exuding a noble and elegant, splendid and luxurious atmosphere.