It is this substance that absorbs yellow light thus reflecting a blue color.
Light blue diamond name.
At night alexandrite appears reddish with incandescent light while usually green or blue at daytime.
On exhibit at crater of diamonds state park in arkansas where it was found in 1990.
Commond via wikimedia commons alexandrite.
At 2 million per carat it would command a reserve price of 79 million.
39 31 carats fancy deep blue flawless acquired by graff in 1984 the imperial blue is the world s largest known flawless fancy deep blue diamond.
The color of this gemstone changes depending on the source of light.
Lovely translucence and low cost have prompted a slight resurgence in the popularity of chalcedony.
The presence of an impurity this is also true for blue diamonds.
A pale blue diamond source.
Pear shaped rose cut diamond.
Fancy intense blue diamond hpht 3 carat princess cut 31854 from r.
Stuart or holland diamond.
Licensed under cc by 3 0.
In the fancy color diamond book they explain that while a diamond is forming boron particles can become trapped inside the crystal lattice.
Alexandrite is a color changing gemstone of the mineral chrysoberyl.
The price of a 0 5 carat light blue diamond is 26 280 on average.
This diamond has great color but contains many inclusions.
What it lacks in provenance and color intensity it makes up for in size.
Blue diamond s level of rarity often makes them a target for diamond collectors investors and enthusiasts.
A diamond which received a perfect 0 0 0 rating from the american gem society weighing 3 03 carats 0 606 g rough and 1 09 carats 0 218 g cut.