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🎯 Elevate your craft with Upsala Blue — where vibrant color meets rock-solid durability!
SIO-2 Upsala Blue High Fire Ceramic Clay is a premium, non-toxic porcelain clay designed for professional and amateur potters alike. Firing at Cone 5-6 (1200ºC-1240ºC), it offers exceptional durability with zero water absorption and minimal shrinkage. Its smooth, plastic texture supports both wheel throwing and hand-building, while the vivid cobalt blue base beautifully complements ceramic glazes. Certified food-safe and manufactured in Spain since 1874, this clay ensures consistent, high-quality results for creative, functional, and artistic pottery projects.












| ASIN | B0CBLDX9S8 |
| Age Range (Description) | Adult |
| Age Range Description | Adult |
| Best Sellers Rank | #265,534 in Arts, Crafts & Sewing ( See Top 100 in Arts, Crafts & Sewing ) #999 in Pottery & Modeling Clays |
| Brand | Sandtastik |
| Brand Name | Sandtastik |
| Color | Upsala Blue |
| Customer Reviews | 4.1 out of 5 stars 41 Reviews |
| Educational Objective | Creative Skill |
| Included Components | Clay |
| Item Dimensions | 8.5 x 8.5 x 2 inches |
| Item Type Name | Kiln-Fired Clay |
| Item Weight | 3.5 pounds |
| Manufacturer | Sandtastik Products Ltd |
| Manufacturer Part Number | UPSALASAMPLE |
| Material | Natural Porcelain Clay |
| Material Type | Natural Porcelain Clay |
| Model Name | UPSALASAMPLE |
| Model Number | UPSALASAMPLE |
| Number of Items | 1 |
| Other Special Features of the Product | Non-Toxic |
| Recommended Uses For Product | Pottery |
| UPC | 706925700130 |
| Unit Count | 64 Ounce |
| Warranty Description | No warranty. |
A**R
Colorful porcelain
Enjoyed working with this
J**T
It ok
Mary Blue, and fires like a light blue it’s a lil chalky I mixed it with regular porcelain and it did great so I got a good combination out of using both of them but by itself it’s a little weird to throw with. I made a couple ocarinas with it and it turned out pretty cool.
D**R
Porcelain like clay.
This pretty blue porcelain is also possible to form into a box.
A**R
Dry clay
The clay was drying out….had tho rehydrate it
M**E
Works great
Present for my sister. She really likes the way it works
A**N
Beautiful color but a little hard to work with
This clay is a beautiful color both bisqued and when glazed. It also holds an impressed design well. But, the clay itself is a little difficult to work with. It does not respond at all like most low, mid, or high fire clays. I will buy it again in the future, though, because of the color.
J**I
Beautiful blue!
Love this blue! Fires into a mellow light blue under low temp and fires into a bright deep blue under high fire. Gorgeous!
K**R
Too soft low quality
Dislike
D**D
Very user friendly
A wonderful product!
A**R
Nice and pliable, doesn’t crack when dries.
Nice and pliable, doesn’t crack when item dry. The color may vary. I had to paintmine with acrylic paint to match the piece. Otherwise perfect for little projects
Trustpilot
5 days ago
2 months ago