sounds to me like you're thinking of the heart of the ocean
The Jubilee Diamond was discovered in South Africa in 1895. The diamond was cut from a 650.80-carat rough diamond and is renowned for its exceptional clarity and color. It was later acquired by famous jeweler Harry Winston.
The Hope Diamond is a famous blue diamond known for its deep blue color and storied history, including tales of curses and intrigue.
The Wittelsbach, a 35.56-carat blue diamond mined in India, sold December 2008 at a Christie's auction for $24.3 million.
The 'costliest diamond of the world' is measured by the price paid for a diamond. Depending on your particular criteria, there are several examples.When money changes hands to represent the costliest diamond...The JCK Marketplace Web site reports that an 84-carat [faceted] diamond sold for US $16.2 million, at "... $191,980 per carat, the highest price per carat ever paid for a white diamond at auction." This auction took place in 2007.At the same auction..."An extremely rare fancy vivid blue pear-shaped diamond, weighing 4.16 cts. and mounted as a ring, ...sold for $4.7 million. The per-carat price was more than $1.1 million, making it the second highest price per carat paid for a colored diamond at auction."In 2010, Reuters reported that "Petra sets record, sells diamond for $35 million" in its headline for the sale of a 507 carat raw diamond.
The Hope Diamond is a deep blue color due to traces of boron within the diamond's carbon structure. These boron impurities absorb red, yellow, and green light, resulting in the blue color that the diamond is famous for.
There is a famous diamond of about this weight called the Hope Diamond.
The Hope Diamond weighs 45.52 carats. One carat is equal to 200 milligrams, so in other words, the Hope Diamond weighs 9.104 grams.
First, you'd have to find such a diamond. This size and colour are uncommon, blue being one of the rarest diamond colours. Recently (21Oct2010), the Bulgari Blue Diamond, "...a triangular 10.95 carat Fancy Vivid blue diamond, (the largest such blue diamond of this cut ever offered at auction)," sold for $15.7 million or $1.4 million per carat. (From The Telegraph, London.)
250 carat Diamond- uncertain amount as can be auctioned; very few diamonds of this size25 carat Diamond- $1 million to $2 million; for a lower quality stone2.5 carat Diamond - $5,000~$8,000Another AnswerYou can buy a 2.5 carat diamond today on Blue Nile and spend from US$12,000 to US$16,000.Also, a 15 carat diamond is available on Blue Nile today for just over US1,000,000.
Today on Blue Nile, you can purchase a one carat SI1 diamond and pay about US$4,759; and a one carat VVS1 diamond and pay about US$12,252.
You can shop online -- link below -- for the synthetic blue diamond that you want, by giving them all the parameters required to price this diamond. Using this site, be aware that you can buy a stone that is... ... a "round brilliant up to about .45 carat in VS, SI and I quality levels. You may request to be put on a waiting list for a larger diamond, but please be aware it may take years for a blue diamond 1 carat or larger."
What you have is worth whatever someone will pay you for it. If you mean .01 carat of a diamond, then its value is lower than if you mean 1.00 carat diamond. The lowest price today on Blue Nile for a 1.00 carat diamond is US$2,151. The lowest carat weight you can purchase there weighs .24 carats.
All else being equal: carat weight, cut, and clarity, a blue diamond will always be more expensive than a white diamond.
Today, on Blue Nile, you can buy a diamond of about this carat weight and pay between US$509,719 and US$1,376,169, depending on the colour, clarity, cut and exact carat weight that you want.
A diamond of about that carat weight can be bought today on Blue Nile, and you'd pay between US$5,732 and US$23,606, depending on the exact carat weight, cut, clarity and colour that you want.
You can buy a 6.01 carat Flawless diamond today on Blue Nile, with an F colour and pay just over US$423,000.
You can purchase a diamond of this carat weight today at Blue Nile and spend between US$9,701 and US$27,984, depending on the colour and clarity that you want.