Johann Gottlob von Kurr
28 x 19 cm
diamond from India, now in the Louvre (6), The Saucy diamond of the Emperor of
Russia (7), The Orlov diamond set in the Imperial Sceptre of Russia (8), The
Koh-i-Noor set in the Queen Mother's Crown (9), with diamond cuts (1-4), ruby
or precious red corundum (15) sapphire or blue corundum (16), corundum cuts
(10-14), chrysoberyl (17-21), spinel (22-23), zircon (24-26), hyacinth (27), beryl
(28-29 &33) sea-green beryl or aquamarine (30) and emerald (31-32).

