If the stone is a natural blue diamond, it could be worth millions. However, if it is an irradiated stone, coloured blue by some irradiation process, then the stone is worth significantly less than it would be if it were not a 'blue' diamond.
You can buy a .41 carat diamond today at Blue Nile for less than US$500.
If .41 is a carat total weight, then the value is much less, because the stones are all smaller than .41 carats that make up this total.
A natural blue diamond will always be worth more than a white or colourless diamond, given equal carat weight, clarity, and excellence of the cut.
Every diamond is worth what someone will pay you for it. You can buy a 25 point diamond -- 25/100ths of a carat -- today at Blue Nile and spend about US$215. A four-point diamond is 4/100ths of a carat, meaning that it is very small for a diamond -- between 2 and 2.5MM at the girdle if the diamond is a round brilliant cut.
Every diamond is worth what someone will pay you for it. Best practices dictate that if you have a diamond of this weight, you should pay for a certified gemologist's certificate documenting the 4 Cs of the diamond. This way, you'll have a better understanding of the amount of money you could be willing to accept for it. You can buy a diamond of this carat weight today on Blue Nile, and spend from US$6,700 to US$9,300, depending on the cut, clarity and colour of the diamond.
A .25 carrot would be a Very Tiny carrot -- you could pull one from your garden and ask around for its value. Otherwise, a .25 carat diamond is worth whatever someone will pay you for it. Today, on Blue Nile, for example, you can purchase a similar diamond and pay between US$246 and US$366, depending on the clarity, cut, colour and exact carat weight you want.
A jeweler can help you value this diamond. Today on Blue Nile, you can purchase a .26 carat diamond and pay between US$250.00+ and US$500.00+. Your diamond, being smaller, may have less value, depending on its combined characteristics: colour, cut and clarity.
Yes. Any diamond is worth more than a crystal.
$250,000,000
A natural blue diamond will always be worth more than a white or colourless diamond, given equal carat weight, clarity, and excellence of the cut.
A natural blue diamond's value is based not only on its colour -- the intensity of the blue colour, and its carat weight and clarity. The cut of the diamond may also be a factor in its value.
This diamond would be expensive. You can follow the link, below, and inquire as to the price for any of the blue diamonds shown. In addition, Sotheby's recently auctioned a 5.16 carat, blue diamond, with bidding expected in the US$4.6 to US$5.8 million. Read more about this stone, below.
The address of the Blue Diamond Library is: 14 Cottonwood Dr, Blue Diamond, 89004 0040
The Hope Diamond is a blue diamond.
You can buy a one-quarter carat diamond today on Blue Nile and spend less than US$1,000.
Any diamond is worth whatever someone will pay you for it. Today, on Blue Nile, you can purchase a diamond of this carat weight and pay between US$848 and US$3,103 , depending on the colour and clarity that you want.
A diamond is worth whatever someone will pay you for it. However, you can buy a diamond of this carat weight today on Blue Nile and spend between US$853 and US$3,837, depending on the cut, colour and clarity that you want.
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.)
Every diamond is worth what someone will pay you for it. You can buy a 25 point diamond -- 25/100ths of a carat -- today at Blue Nile and spend about US$215. A four-point diamond is 4/100ths of a carat, meaning that it is very small for a diamond -- between 2 and 2.5MM at the girdle if the diamond is a round brilliant cut.