how do you make artificial sapphire?

im not looking for how industries do it large scale, i need to know how to make clear and/or colored artificial sapphire at home

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Bem,a melhor maneira de se produzir a safira em casa é pelo processo de verneuil,que é o processo de fusão por chama,este é o modo como eu faço em minha casa,boa sorte.

get yourself an arc welder or similar arcing device and some carbon arc rods from a welding supply place and fill a ceramic bowl with alumina, your going to need some kind of carbon wire or high heat resistant rod with a sapphire on the tip to move up and down in the bowl.
Its not a home scale process, unless you reckon you can employ pressures of several thousand PSI in tanks whilst you grow quartz lumps.

You make them in a process that uses temperatures around 700 F, in pressures of 30,000 PSI, over at least many days, and sometimes months !

And when you're done you can look for gravitational waves!

Those are some big effing sapphires! 

Picture copied from here:

Quote from:

"Because of the incredibly high sensitivity needed to detect any such change, the interferometer mirrors must be based on very high-purity materials, and have extremely low heat absorption at the laser wavelength of 1064 nm – since any build-up of heat would cause thermal lensing and enough of an error to ruin the experiment. The sapphire provided by GT Crystal Systems has an absorption of only 40 ppm/cm at the key 1064 nm wavelength, says the company."

rickharris5 years ago
It's not going to happen for you.

If all you need is a blue stone, then clear casting resin can be coloured and give a good representation.

They are not expensive to buy.
Sapphire is a form of corundum, crystalline Al2O3.
The wiki article on corundum points to another article titled "Verneuil process".

And, uh, that looks to be straightforward... You know, you just need clear a space in the garage, so you'll have some place to build it.

BTW if you can figure out a way to do this using a domestic microwave oven, e.g.
then that would be worth some serious mad-science geek cred, just because.