These cost about 1300 dollars on Alibaba, the cost of a lot of equipment has fallen massively the last few years.

[1] https://www.alibaba.com/product-detail/1000-Degree-High-temp...

... and an X-ray Diffractometer.

What is the point of making it if you can't prove that what you made is LK99?

A levitating rock would be good enough for me!

These are rather common. Often used in metalworking for steel hardening.

yeah but OP said 'high school lab'... which granted may be true in the US but certainly not what I'd call 'common' or even 'rare' where I live. a good description would be 'completely unheard of'.

>which granted may be true in the US

I'm a graduate of the public school system in the US in a state that is not in the top 10-15 for education - my high school had a pretty impressive furnace. I'm too far removed to remember what it's maximum temperature was but I wouldn't be surprised if it was 1000C+

I guess you'd head to the art department and use the ceramic kiln, instead.