Green Star Sapphire Value

Natural green sapphires show lines at 4500 4600 and 4700.

Green star sapphire value.

The fancy sapphire colors are. In natural light this color changing sapphire turns blue but in artificial light it displays a violet color. Natural purple may show combination of ruby and sapphire spectrum. Synthetic green sapphires show lines at 5300 and 6870.

A star sapphire is so named due to the appearance of a star shaped format which presents itself when the sapphire is. Star sapphires can range in color from blue in various tones to pink orange yellow green lavender gray and black. The most common star pattern is a 6 rayed star although star sapphires with 4 rays and 12 rays have been found. The international gem society igs has a list of businesses offering gemstone appraisal services.

Pink orange yellow green purple and violet. Star sapphires occur in almost every color seen in transparent sapphires although yellow orange and green star sapphires are very uncommon. However the yellow and pink sapphire have become very popular and are now often seen in jewelry. It has a nice blue colour.

Yellow and orange line sapphires 6900 cutoff at 4600. The optical phenomenon responsible for the star sapphire s shimmering rays is called asterism from the latin word astrum for star. A burmese blue cabochon star sapphire and diamond cocktail ring. Natural blue star sapphire burma color.

There truly is a different color of sapphire to suit anyone s taste. Tiny needles of silk within the sapphire crystal reflect light and form a star sapphire s telltale star. Star sapphire value see our article called phenomenal gems to read more about the grading and valuation of stones with asterism. Star sapphires exhibit a special optical phenomenon called asterism.

Parti sapphires show two or more colors. Sapphire is a precious gemstone a variety of the mineral corundum consisting of aluminum oxide α al 2 o 3 with trace amounts of elements such as iron titanium chromium vanadium or magnesium it is typically blue but natural fancy sapphires also occur in yellow purple orange and green colors. Al2o3 corundum aluminium oxide cut. Color has the greatest influence on a sapphire s value and preferred sapphires have strong to vivid color saturation.

Other natural yellow to orange yellow not diagnostic. The coloring agents in blue sapphire are iron and titanium and vanadium in violet to purple colored stones. 9 hardest after diamond formation. Blue star sapphire ceylon good star si vvs type ii 1 000 to 3 000 per carat.