List of famous faceted topaz greater than 1000 carats in weight

May 15, 2008 by Dr Shihaan Larif 4 Comments

Famous faceted topaz gemstones greater than 1,000 carats in weight, arranged in descending order of weights

S/N	Name	Source	Carat Weight	Cut/Shape	Color	Present Owners
1	El-Dorado Topaz	Brazil	31,000	emerald	yellowish-brown	Programa Royal Collections
2	Lua de Maraba	Brazil	25,250	octagonal	gray	Programa Royal Collections
3	American Golden Topaz	Brazil	22,892.5	cushion	yellowish-brown	NMNH – Smithsonian
4	Brazilian Princess Topaz	Brazil	21,005	square-emerald	light blue	AMNH – New York
5	Golden Topaz Sphere	Brazil	12,555	spherical	yellowish-brown	NMNH -Smithsonian
6	Topaz Amarelo	Brazil	9,600	pear	yellow	Programa Royal Collections
7	Topaz Azuli	Brazil	8,225	cushion	vivid blue	Programa Royal Collections
8	Unnamed	Brazil	7,725	unknown	yellow	NMNH – Smithsonian
9	Unnamed	Brazil	4,202	emerald	colorless	Programa Royal Collections
10	Unnamed	Brazil	3,273	unknown	blue	NMNH – Smithsonian
11	Unnamed	Brazil	2,915	oval	colorless	Programa Royal Collections
12	Unnamed	Brazil	1,833	pear	blue	Programa Royal Collections
13	Unnamed	Brazil	1,800	oval	blue	Programa Royal Colections
14	Braganza Diamond	Brazil	1,640	unknown	colorless	Portuguese Crown Jewels
15	Unnamed	Brazil	1,469	unknown	yellow-green	NMNH – Smithsonian

Topaz is one of the gemstones whose crystals can grow to enormous sizes given the appropriate

Famous Topaz Gemstones- Cut and Uncut

May 14, 2008 by shihaan1 2 Comments

Chemistry of the mineral Topaz

Topaz is a silicate mineral which is the largest and most important class of rock-forming minerals. Topaz belongs to the sub-class Nesosilicates, the simplest of all silicates in which the tetrahedral SiO

American Golden Topaz

May 12, 2008 by Dr Shihaan Larif Leave a Comment

Origin of name

The “American Golden Topaz” which is of Brazilian origin, and resides in the Natural History Museum of the Smithsonian Institution, at Washington DC, is the largest faceted golden

World’s Largest Star Rose Quartz – Michael Scott Collection

May 9, 2008 by shihaan1 4 Comments

Origin of name

The Michael Scott Collection, arguably the most important private gem collection in the United States, with a few rivals in the world outside of the royal families, was started by Michael Scott, the first president of

List of faceted rubies greater than 10-carats in weight

May 5, 2008 by shihaan1 1 Comment

List of gem-quality faceted rubies greater than 10-carats in weight arranged in descending order of weights

S/N	Name	Carat Weight	Origin	Cut-Shape	Present Owner
1	Prince’s Ruby	174.67	unknown	unknown	Bowers Museum
2	Rosser Reeves	138.70	Sri Lanka	cabochon star	NMNH Smithsonian
3	DeLong Star	100.32	Burma	cabochon star	AMNH New York
4	Nga Mauk	98.00	Mogok Burma	unknown	unknown
5	Kallahpyan	74.00	Mogok Burma	unknown	unknown
6	Maung Lin-1	70.00	Burma	unknown	unknown
7	J.P.Morgan-2	67.00	Sri Lanka	asymmetrical	AMNH New York
8	Mandalay	48.019	Mogok Burma	cushion	unknown
9	J.P.Morgan-1	47.00	Burma	irregular cabchon	AMNH New York
10	Unnamed	46.75	Burma	oblong	unknown
11	Maung Lin-2	45.00	Burma	unknown	unknown
12	Forster-2	39.50	Mogok Burma	drop-shaped	unknown
13	Unnamed-set world record price for single ruby	38.12	Burma	cabochon	sold 1993 by Burma Gems Enterprise
14	Unnamed	36.00	Burma	unknown	sold by Mindon Min for £30,000
15	Unnamed-set in ring	32.67	Mogok Burma	oval	sold 2000 by Christie’s
16	Forster-1	32.30	Mogok Burma	cushion	unknown
17	Unnamed-set in ring	32.08	Burma	unknown	sold 1989 by Sotheby’s
18	Star of Bharany	27.62	probably Burma	oval cabochon star	House of Louis XV
19	Unnamed-mounted in diamond pendant	27.37	Burma	pear	unknown
20	Unnamed-auction record for star ruby	26.40	Burma	cabochon star	sold 1994 by Christie’s
21	Unnamed-set in ring	25.70	unknown	unknown	sold 1988 by Christie’s
22	Unnamed-12-rayed star ruby	25.20	Sri Lanka	cabochon star	unknown
23	Peace Ruby	25.00	Mogok Burma	round brilliant	unknown
24	Unnamed	24.20	unknown	cushion	sold 1989 by Christie’s
25	Unnamed	24.13	Sri Lanka	cabochon star	unknown
26	Unnamed	22.00	Mogok Burma	unknown	bought by Indian dealer named Chodilla
27	Chhatrapati Manik Ruby	20.70	unknown probably Burma	oval cabochon	unknown
28	Nga Boh	20.00	Mogok Burma	unknown	unknown
29	Unnamed	16.51	Burma	cushion	sold 1993 by Sotheby’s
30	Unnamed-mounted in ring	16.20	Mogok Burma	unknown	sod 1990 by Christies
31	Alan Caplan	15.97	Mogok Burma	cushion	Sultan of Brunei
32	Unnamed	15.00	Burma	pear	private European collector
33	Unnamed	14.00	unknown	cushion	sold 1990 by Christie’s
34	Unnamed-mounted in ring	12.50	Burma	unknown	sold 1990 by Christie’s
35	Unnamed-mounted in ring	12.22	Burma	cushion	Sotheby’s 1995
36	Unnamed-mounted in ring	12.10	unknown	unknown	sold 1992 by Christie’s
37	Unnamed	10.35	unknown	cushion	sold 1988 Christie’s
38	Unnamed	10.11	Burma	cushion	sold 1994 Christie’s
39	Unnamed	10.01	unknown	cushion	sold 1989 Christie’s

Above is a list of gem-quality faceted rubies greater than 10-carats in weight, arranged in descending order of weights. In this list the number of rubies greater than 100-carats in weight are only three.

J. N. Forster Rubies

May 3, 2008 by Dr Shihaan Larif Leave a Comment

Origin of name

Two large rubies belonging to the Burmese royal family weighing 37 carats and 47 carats were brought into England in 1875 for sale in the British market. J. N. Forster decided to re-cut the two stones as they did not

Nga Mauk & Kallahpyan Rubies

May 1, 2008 by shihaan1 8 Comments

Origin of name

The two rubies “Nga Mauk” and “Kallahpyan” are believed to have originated from the same enormous

Peace Ruby

April 30, 2008 by shihaan1 8 Comments

Origin of name

The 42-carat, pigeon’s-blood color, rough ruby was discovered in the Mogok valley on June 30, 1919, just two days after the signing of the Treaty of Versailles on June 28, 1919, a peace document signed by the Allies

Chhatrapati Manik Ruby

April 30, 2008 by shihaan1 1 Comment

Origin of name

The “Chhatrapati Manik Ruby” which according to legend is one of the oldest rubies in the world dating back to 380-415 AD, the period of rule of the powerful emperor of northern India, Candragupta II, also known

Alan Caplan Ruby – Mogok Ruby

April 27, 2008 by shihaan1 3 Comments

Origin of name

“Alan Caplan Ruby” also known as the “Mogok Ruby” gets its name from Alan Caplan the famous

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List of famous faceted topaz greater than 1000 carats in weight

Famous Topaz Gemstones- Cut and Uncut

Chemistry of the mineral Topaz

American Golden Topaz

Origin of name

World’s Largest Star Rose Quartz – Michael Scott Collection

Origin of name

List of faceted rubies greater than 10-carats in weight

List of gem-quality faceted rubies greater than 10-carats in weight arranged in descending order of weights

J. N. Forster Rubies

Origin of name

Nga Mauk & Kallahpyan Rubies

Origin of name

Peace Ruby

Origin of name

Chhatrapati Manik Ruby

Origin of name

Alan Caplan Ruby – Mogok Ruby

Origin of name

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