Rajaratna Ruby
Encyclopedia
At 2475 carats the Rajaratna Ruby is one of the world's largest ruby
crystals, but is more of specimen than gem quality. An 18696 carats (3.7 kg) crystal exists and there is a 21450 carats (4.3 kg) piece from Myanmar
. The "Chaiyo Ruby" is another large example, weighing 109000 carats (21.8 kg).
Ruby
A ruby is a pink to blood-red colored gemstone, a variety of the mineral corundum . The red color is caused mainly by the presence of the element chromium. Its name comes from ruber, Latin for red. Other varieties of gem-quality corundum are called sapphires...
crystals, but is more of specimen than gem quality. An 18696 carats (3.7 kg) crystal exists and there is a 21450 carats (4.3 kg) piece from Myanmar
Myanmar
Burma , officially the Republic of the Union of Myanmar , is a country in Southeast Asia. Burma is bordered by China on the northeast, Laos on the east, Thailand on the southeast, Bangladesh on the west, India on the northwest, the Bay of Bengal to the southwest, and the Andaman Sea on the south....
. The "Chaiyo Ruby" is another large example, weighing 109000 carats (21.8 kg).