Alan Caplan Ruby
The Alan Caplan Ruby, also known as the Mogok Ruby, was 15.97 carats in weight when sold at Sotheby’s New York for $3,630,000 in 1988. This ruby broke the auction record per carat price for a ruby.

Black Prince’s Ruby
One of the most famous rubies of all time wasn't a ruby at all but a red spinel. The history of this gem is documented back to 1366 AD. The Black Prince Ruby is mounted on the front of England’s Imperial State Crown, just above the famous Cullinan II Diamond, in the Tower of London. Its weight is around 140 carats. It is drilled at one end and a small ruby is set atop the opening.

Chhatrapati Manik Ruby
The Chhatrapati Manik Ruby has perhaps the oldest history. This ruby was found some 2000 years ago in present-day Madhya Pradesh, India. The ruby is a Burmese oval cabochon of deep color. Its weight is between 20 and 40 carats. In 1934, the ruby was mounted on the front of a diamond tiara.

DeLong Ruby
This 100.32 carat star ruby is displayed in the American Museum of Natural History. Discovered in Burma during the early part of the twentieth century, this ruby was donated by Edith Haggin DeLong to the museum.

Edwardes Ruby
The 167-carat Edwardes Ruby was donated to the British Museum of Natural History in 1887 by John Ruskin. This ruby was named in honor of Major-General Sir Herbert Benjamin Edwardes who saved British rule in India during the years of the Indian Mutiny.

Forster Rubies
The two most important rubies ever known in Europe were brought to England in 1875. One ruby, a rich red cushion shape, weighed 37 carats, while the second ruby was a drop-shaped stone of 47 carats. Both rubies were later recut by James N. Forster of London, resulting in rubies of 32-5/16 carats and 39-9/16 carats respectively.

Maung Lin Ruby
The Maung Lin ruby weighed 400 carats in the rough and was secretly disposed of to a trader named Maung Lin. It was then cut into three pieces: a ruby of 70 carats sold to England, a ruby of 45 carats sold in Mandalay, and a third ruby of unknown weight sold in Calcutta.

Nga Boh Ruby
The Nga Boh Ruby, which means "Dragon Lord", was found at Bawbadan, Burma and weighed 44 carats in the rough, which was later cut to 20 carats. It was said to be the finest ruby of its size ever seen.

Nga Mauk & Kallahpyan Rubies
Originally a single rough Mogok ruby weighing 560 carats, one stone was given to the king while the second stone was secretly sent to Calcutta for sale. Eventually, the second half was purchased in Calcutta for an enormous sum and returned to Burma. The two rubies were cut in Mandalay, one forming a ruby weighing 98 carats named Nga Mauk (aka Gna Monk), and the other ruby weighing 74 carats as the Kallahpyan Ruby.

Peace Ruby
This 42 carat ruby was found in the Mogok Valley on June 30th, 1919 with virtually no blemishes of any kind. It was cut in Bombay into a round brilliant ruby weighing 25 carats, of perfect color and perfectly flawless. The present location of this ruby is unknown.

Rosser Reeves Ruby
This 138.7 carat star ruby is on display at the Smithsonian. it was named in honor of the donor, Mr. Rosser Reeves. The Reeves ruby is not only clearer and more translucent than the DeLong Ruby, but also possesses a magnificent six-rayed star. This ruby was donated by Rosser Reeves to the museum.