What Is A Blue Star Sapphire

The most common star pattern is a 6 rayed star although star sapphires with 4 rays and 12 rays have been found.

What is a blue star sapphire.

9 hardest after diamond formation. Tiny needles of silk within the sapphire crystal reflect light and form a star sapphire s telltale star. A star sapphire is so named due to the appearance of a star shaped format which presents itself when the sapphire is. Star sapphires exhibit a special optical phenomenon called asterism.

Natural blue star sapphire burma color. A burmese blue cabochon star sapphire and diamond cocktail ring. These stones are generally cut as cabochons to bring out the best star that can be visible. The thai blue star sapphire is a variety of sapphire that displays a six pointed star pattern radiating from the inky depths of the stone.

The most desirable color is a vivid intense blue. Star sapphires occur in almost every color seen in transparent sapphires although yellow orange and green star sapphires are very uncommon. This effect is caused by asterism. This effect is caused by asterism.

A blue or white star sapphire or a pink star sapphire are usually more expensive and get into the thousands of dollars. The optical phenomenon responsible for the star sapphire s shimmering rays is called asterism from the latin word astrum for star. Star sapphires can range in color from blue in various tones to pink orange yellow green lavender gray or black. Sapphire along with her sister gemstone ruby belongs to the corundum group of gemstones considered one of the hardest minerals on earth.

According to legend helen of troy owned a magnificent star sapphire and napolean gave a seven piece jewelry set featuring 29 sapphires to his wife josephine. It has a nice blue colour. A lindy star on a yellow sapphire cabochon. Star sapphire is a type of sapphire displaying an optical star like effect.

Move star joan crawford owned several huge sapphires of 70 carats or larger and elizabeth taylor was given a large sapphire ring by one of her husbands. Most star sapphire exhibits a white star but star sapphire from thailand is famed for its gold colored asterism. The really deep blue ones are the most expensive although if you see a twelve pointed star these are more rare than the six pointed star that usually puts the price up by quite a lot. Furthermore natural star sapphires rarely have perfectly even color so if the color is excellent and perfectly blue there is a good chance it was created in a lab somewhere.

You can read more about asterism in our phenomenal gems article.