Star sapphires exhibit a special optical phenomenon called asterism.
Light blue star sapphire value.
Typically mid quality untreated blue sapphire will sell for 20 30 more than a treated stone of the same quality.
Another valuable sapphire type is the very scarce orange pink padparadscha.
The most common star pattern is a 6 rayed star although star sapphires with 4 rays and 12 rays have been found.
Star sapphires occur in almost every color seen in transparent sapphires although yellow orange and green star sapphires are very uncommon.
An exotic type of sapphire also called the color changing sapphire displays different colors depending on its lighting.
A burmese blue cabochon star sapphire and diamond cocktail ring.
The optical phenomenon responsible for the star sapphire s shimmering rays is called asterism from the latin word astrum for star.
Blue star sapphire ceylon good star si vvs type ii 1 000 to 3 000 per carat.
The term star sapphire encompasses all colors of star corundum except red which is called star ruby.
Top quality unheated stones could get a premium of 50 or higher especially if they re large.
Tiny needles of silk within the sapphire crystal reflect light and form a star sapphire s telltale star.
Watch the video for more information on star sapphires.
Except fair or lower grades.
Star sapphire value price and jewelry information home gemstones star sapphire value.