Of course the world's most valuable jewel is one relegated to royalty. The Koh-i-Noor diamond was reportedly 793 carats when first discovered and now weighs 105.6 carats.
gem report
13 Of The Most Valuable Jewels In the World - 2nd Hope Diamond
Educational5 CommentsThe Hope diamond has captured more headlines than any other stone on earth. This rare blue diamond is 1.1 billion years old, weighs over 45 carats, and is long believed cursed.
13 Of The Most Valuable Jewels In the World - 3rd Star Of India
Educational3 CommentsThe 563.35 carat Star of India is the largest star sapphire of its kind in the world, and it has stars on both sides of the stone, which is highly unusual.
13 Of The Most Valuable Jewels In the World - 4th L'Incomparable Necklace
Educational2 CommentsUncovered by a little girl playing in a rubble pile of mine waste in the Democratic Republic of Congo, this yellow diamond is the largest brown diamond ever discovered.
https://www.naturallycolored.com/famous-diamonds/incomparable-diamond
13 Of The Most Valuable Jewels In the World - 5th Cora Sun-Drop Diamond
Educational3 CommentsRare in both its vivid yellow color and its sheer size, the Cora Sun-Drop is the most expensive yellow diamond ever sold at auction. It was found in South Africa.
http://diamondland.be/cora-sun-drop-diamond-truly-unique-yellow-diamond/
13 Of The Most Valuable Jewels In the World - 6th The Tiffany Diamond
Educational4 CommentsUnearthed in 1878 in South Africa at 287.42 carats, the Tiffany Diamond was bought by Charles Tiffany soon after its discovery. Iconic as the house itself.
13 Of The Most Valuable Jewels In the World - 7th The Graff Pink Diamond
Educational1 CommentHow do you improve a 24.78 carat potentially flawless vivid pink diamond? Laurence Graff bought it at auction in 2010 for $46 million with a vision to make it even more beautiful.
https://www.naturallycolored.com/famous-diamonds/graff-pink-diamond
13 Of The Most Valuable Jewels In the World - 8th The Dresden Green
Educational1 CommentGreen diamonds are scarce, and unlike most, the Dresden Green's color is solid throughout rather than a surface skin. Its earliest known reference dates to the 1700s.
13 Of The Most Valuable Jewels In the World - 9th Marie-Louise Diadem
EducationalCommentCommissioned by Napoleon I in 1810 for his second wife, Marie Louise of Austria, this diadem of 79 emeralds and more than 1,000 diamonds outlived an empire.
http://orderofsplendor.blogspot.com/2014/03/tiara-thursday-marie-louise-diadem.html
13 Of The Most Valuable Jewels In the World - 10th Elizabeth Taylor's Engagement Ring
Educational2 CommentsElizabeth Taylor's engagement ring from Richard Burton was immortalized by a stormy and passionate romance born on the set of the 1963 film Cleopatra.
https://www.vogue.com/article/elizabeth-taylor-richard-burton-romace-wedding-anniversary
13 Of The Most Valuable Jewels In the World - 11th Grace Kelly's Engagement Ring
Educational3 CommentsGrace Kelly's famous 10.47 carat engagement ring was actually the second ring Prince Rainier III gave her. The first was a simple diamond and ruby eternity band.
https://www.elle.com.au/fashion/the-story-of-grace-kellys-engagement-ring-6871
13 Of The Most Valuable Jewels In the World - 12th Princess Diana's Sapphire Engagement Ring
Educational1 CommentLady Diana Spencer's engagement ring, a 12-carat blue Ceylon sapphire edged by 14 solitaire diamonds in 18k white gold, became one of the most copied designs ever.
https://en.wikipedia.org/wiki/Engagement_ring_of_Lady_Diana_Spencer
13 Of The Most Valuable Jewels In The World - 13th Tsarevna Swan Ring
Educational1 CommentThe Tsarevna Swan ring holds the Guinness World Record for most diamonds set in one ring wearable on the human finger: 2,525 diamonds, 10.48 carats in 18k white gold.