Czar of what, Larry ? Remember Peter 1 abolished that title in 1725 [as I try to keep remindiing, to no avail].
In any case- the Malachite Room? Reserved for imperial weddings and the highest of formal state receptions.....? For TEA! Well, I would have to drag out [get my drift?] my malachite suite, with matchin accessories. Been years since that has been dusted off, least of all cleaned! but, for tea at the Winter Palace [even with my own Faberge flask] it might be worth it, don't cha think?