I doubt it’s a demand situation. Their Chinese cutting house has
HUGH capabilities. I’ve purchased from them many times over the
years, never had a problem, 2-3 day response from emails has been my
experience. I think there was a delay once with an order of very
large synthetic corundum, but it turned out just fine.
BTW, and this may be important for some…
For a long time, they advertised their synthetic corundum as being
flux grown. It’s not and never was, and that caused me a problem once
when I blindly (I should know better!) repeated their claim. That
statement has now been removed from their site, as all the corundum
is and has been flame fusion material. Some of the larger blue
material exhibits an odd patchiness I’ve not seen in flame fusion
material, but this is of little matter to most. I use their red and
blue as performs as it saves me an hour of work on large stones.