9 hardest after diamond formation.
Blue star sapphire price guide.
A star sapphire is so named due to the appearance of a star shaped format which presents itself when the sapphire is.
Add 8 to 10 for rounds and pears.
Black star sapphire prices have also increased in the past few.
Sapphire ceylon untreated blue si vvs type ii 3 000 to 5 500 per carat.
Sapphires can come as cheap as 25 per carat to over 11 000 per carat.
Generally speaking more saturation of color and deeper tone will push up the price of a sapphire.
Larger stones can demand much higher prices and star sapphires that are untreated or heat only can fetch very.
Generally a natural blue star sapphire prices remain the highest due to its high rarity and demand.
Add to 20 or deduct to 10 for other cutting.
Blue star sapphire ceylon good star si vvs type ii 1 000 to 3 000 per carat.
Blue star sapphire ceylon good star.
Sapphire prices can range greatly depending on many factors.
Prices for ovals and cushions.
Good star si vvs type ii 100 to 1 500 per carat.
For example here in australia the most popular sapphire color is the cornflower blue sapphire which is a vivd blue sapphire with medium tone.
Many treated star sapphires in the 1 2 carat range often sell for as little as 10 20 usd per carat.
Al2o3 corundum aluminium oxide cut.
Click here to buy star sapphire.
Typically mid quality untreated blue sapphire will sell for 20 30 more than a treated stone of the same quality.
If certified burmese and untreated add 50 except fair or lower grades.
We also have blue star sapphires.
Just like other colored gems blue sapphire price per carat largely depends upon the four quality parameters also called 4c s color clarity cut and carat weight.
Blue star sapphires are often diffusion treated with titanium to improve the asterism star effect.
After blue pink and pink orange padparadscha colors command the highest prices.
Therefore before buying a blue sapphire online or from a local gem store it is better to gain a before hand knowledge about how the blue sapphire prices vary.
Add 10 to 20 for emeralds and marquis.
This type of sapphire is not as dark as the royal blue kind.
For more information on sapphire quality factors consult our sapphire buying guide blue sapphire appraisal guide and sapphire engagement ring guide.
A blue sapphire around 1 carat is likely to cost from as little as 450 to 1 600 depending on quality.
In india the blue star sapphire price per carat starts from rs 8 000 per carat 120 approx and can reach up to rs 50 000 per carat 770 approx for premium quality specimens.