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Why is tin oxide so expensive?

This social media post is a little shocking: tin oxide at 1/5th the cost! I assume it is cheaper there because South American consumers are much closer to the tin-production and industrial-chemical supply chain. In North America, a potter is often buying a specialty imported ceramic material that has passed from the mine to the smelter/refinery, then the chemical manufacturer, then the importer, then the ceramic-material wholesaler, then the pottery supplier who repackages it into small sizes, documents it with an SDS and carries it on slow-moving inventory. Those services are legitimate costs, but they can dwarf the actual processing cost of converting tin into tin oxide. That being said, other materials share similar costs, why are they so much less expensive?

Related Pictures

Why is spodumene so expensive?

Made by Gemini in response to a query to create a fist-sized spodumene ore rock. AI Policy

This picture has its own page with more detail, click here to see it.

Industrial spodumene is found in massive quantities across major mining regions like Australia, Africa, and North America. Spodumene exists as mine concentrate, technical/ceramic grade and battery-grade material (the battery industry it has effectively repriced a ceramic feldspathic mineral as "lithium ore"). Still, if this 1.5kg rock was pure spodumene, it could be processed to ceramic grade and sold for $45 (June 2026). The actual mining commodity price at that time was US$2,100/tonne (pricing this rock at $3). That means finely ground ceramic spodumene is currently selling for 10+ times the mine/concentrate price.

Spodumene pricing is disconnected from mine-markets

The battery market continues to set the economic context for ceramic spodumene and lithium carbonate. Zimbabwe suspended exports of raw minerals and lithium concentrates in February 2026, briefly pushing Chinese lithium-carbonate futures above 178,000 yuan/tonne. Earlier data showed spodumene concentrate recovering from about US$610/tonne in June 2025 to above US$2,000 in early 2026. Prices subsequently fell sharply in March, illustrating how disconnected ceramic-supplier pricing can be from rapidly changing mine-market values. Reuters: Zimbabwe suspension, Reuters: spodumene production and prices, Reuters: March price reversal.

What about lithium carbonate?

Albemarle reported an average industrial price of US$19.53/kg in Q2 2026. So potters currently pay only up to 8 times that! Yet, the processing is formidable: The ore must be crushed and beneficiated, then subjected to a high-temperature calcination that converts alpha spodumene to the more reactive beta form, followed by acid roasting, leaching, neutralization, impurity removal and further conversion.

As evidence that lithium is still important, one potter just purchased a 50-pound bag of spodumene for $1200 so she wouldn’t have to worry about it for the rest of her career!

Glaze chemistry and willingness to do testing insulates you

Fortunately, our kilns don’t care where the Li₂O comes from. Spodumene substitutions for lithium carbonate must be done oxide-for-oxide (their accompanying SiO₂ and Al₂O₃ make weight-for-weight replacement invalid). Melt-flow, crystallization, thermal-expansion and slurry tests, not just unity-formula matching, are not only important in industrial settings but valuable to potters (insight-live.com is designed for this). Ceramic suppliers should be asked for current chemistry, mineral form and particle-size specifications; “spodumene” alone is insufficient..

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