STAR SAPPHIRE
Most of the blue sapphires are found in the form star sapphires. Star sapphire is a variety of sapphire that shows a star like special optical phenomenon named as "asterism".
Calibrated Black Star Sapphire
Specify size, shape and quality when ordering. Prices are subject to change without notice. Actual carat weight may vary from the average carat weight listed.
Star sapphires
Some sapphires contain unusual tiny needle-like inclusions, and are cut in a cabochon shape to display a dancing six-rayed white star. Star sapphires, which are becoming more rare, are very popular for men's rings.
Star Sapphire (Asterism)
Certain varieties of sapphire can exhibit a six-pointed "star" or "asteriated" effect (above, right) from light reflections bouncing off of microscopic needle-shaped rutile crystals (also referred to in the ruby trade as ...
Star sapphire
With their very bright and lustrous star formations, star sapphires have traditionally been the most popular of all star gemstones.
Star Sapphire
Star Sapphire is a sapphire with an asterism (a six-pointed star that reflects light.)
Sterling
Sterling is a malleable silver alloy.
Star Sapphires: Natural sapphires that exhibit an asterism. These can be quite valuable if the star is centered and well-defined.
Stater: A silver coin from ancient Greece.
Step cut: See Emerald Cut.
Star Sapphires
Star Sapphires are classified as "phenomenon" stones, as it wasn't always known how the six-rayed star was created within these sapphires.
Star Sapphire: Grey, blue and black corundum, cut en cabochon with minute inclusions of intersecting silk that reflect light in a six-ray star pattern.
Star Sapphire
Sapphire that when cut shows a star-like figure in reflected light because of its crystalline structure.
Station ...
Linde Star Sapphire: A synthetic star sapphire developed in 1967. Many star sapphires found today are these synthetics.
Link: A loop, or other object, which is linked together in a series to make a chain.
LINDE STAR SAPPHIRE
Linde star sapphire ("Linde stars") are synthetic star sapphires that were first made by the Linde Air Products Company in 1947 (they also developed star rubies that year).
Largest Star Sapphire
A stone weighing 9719.5 carats was cut in London, in November 1989. It was named the Lone Star and is owned by Harold Roper.
Largest Opal ...
Star sapphires usually have six ray stars, but twelve ray stars are also known. Rarely, when sapphires are cut en cabochon, they can demonstrate a cat's eye effect.
Star sapphire: Also known as "phenomenon stones", star sapphires are created by an illusion of light.
Star sapphires
Star sapphires have six rayed stars; this is called asterism. It occurs when there is sufficient rutile-tiny needles of titanium-in the stone. The rutile reflects light into a six rayed star.
Star sapphire
A cabochon cut sapphire that normally has six rays, rarely twelve
Sterling silver ...
Star Sapphire, 10.28 cts., 12.64 x 9.84 x 7.34 mm.A fine example of high saturation and crystalline clarity. This stone has been sold.
Star sapphire is the result of reflection of light from fine, oriented, rutile needles. Like star ruby, star sapphires may be heat treated to high temperatures to dissolve the rutile and produce blue sapphires of good clarity.
Blue Star Sapphire Belonging to the corundum family, Blue Star Sapphire is a 9 on the Mohs scale of Hardness which makes it among the most durable of all gemstones. A cabochon cut blue sapphire displaying a 3 ray, 6 point star.
Blue Star Sapphire Mohs' Hardness of 9. The mineral is corundum. A cabochon cut blue sapphire displaying a 3 ray, 6 point star.
Star Sapphire
A form of sapphire that displays a star-shaped pattern that usually has six rays. The stars are caused by needle-like inclusions that catch the light.
Also referred to as Bio Lemon Black Star Sapphire:A black sapphire formed from corundum with Titanium and Iron impurities.
Summer 1962, A star sapphire-blue by day, amethystine violet by night, p. 316, 2pp.
Fall 1962, A 2-½ -lb. sapphire found in Ceylon (largest recorded from Ceylon), p. 351, 1p.
[Star ruby, white star sapphire ring, rare bi-colored star sapphire] ...
AsterismAn asterism is a star-like luminous effect that reflects light in some gemstones, like star sapphires and star garnets. Aurora Borealis(abbreviated AB) A name for faceted glass beads that have an added iridescent coating.
It is similar to a star sapphire or star ruby, but with those gems, there are 3 lines that intersect, where in a cats eye, there is only one line. Translucent honey colored cats eye gems can be very striking and are also very valuable.
Both star rubies and star sapphires hold a special fascination. Relatively few of the rubies mined today are candidates for cutting into star stones. The one essential element needed to produce the star effect is rutile.
Some Sapphires posses a phenomena known as an "asterism" and display a six ray star effect, these unique gemstones are appropriately called "Star Sapphires".
The star sapphire was called the 'stone of destiny' because the three crossed lines (which are small beams of light reflected from the stone)represented faith, hope and destiny.
The most powerful sapphires were those that bore the star marking, and star sapphires are still highly prized as luck-bringers today. Known as Stones of Destiny, star sapphires were said to hold the rays of Faith, Hope and Destiny.
The star sapphires are another rarity, half-dome-cut sapphires with a starlike light effect which seems to glide across the surface of the stone when it is moved.
The synthetic star sapphire was produced by adding more titanium oxide, which precipitated to form needles of rutile.
A luminous star like effect exhibited in some gemstones like Star Sapphires, Garnets and Rubies. Asterism is caused by inclusions of tiny, parallel, rutile needles and may result in four, six or even twelve rayed stars. (Pronounced: as-ter-iz-mm) ...
Asterism The star effect that you see in star sapphires or rubies, for example. This is usually caused by tiny silk rutile inclusions in the stone. The effect can be four- or six- rayed.
The great Oriental traveler, Sir Richard Francis Burton, had a large star sapphire which he referred to as his "talisman" .Just the mere sight of the stone was believed to bring luck and he showed it to people everywhere he went.
Classic lady's ring featuring a star sapphire with six-rayed "asterism."
Glossary
A B C D E F H I L M N O P R S T U V W Y ...
Natural sapphires are sometimes found that exhibit a star effect. These can be quite valuable if the star is centered and well-defined, but in 1967 the synthetic Linde Star Sapphire hit the market, ...
The Line Company adapted this process to create synthetic star sapphires. They added a small amount of TiO2 (rutile) during the creation phase.
Sapphire, like ruby, is a variety of corundum. The Lone Star, a star sapphire cut in England in 1889, weighs 9,719.5 carats, or about four and a half pounds.
Asterism: A star-like luminous effect caused by reflections of light in some stones, like Star Sapphires and Star Garnets.
ATW: Stands for the Approximate Total Weight, in carats, of a gemstone.
Small rutile needles present in gems are responsible for an optical phenomenon known as asterism. Asterated gems are known as "star" gems. Star sapphires, star rubies, ...
Sapphires with an unusual kind of tiny needle-like inclusions can be cut in a cabochon shape to display a dancing six-rayed white star.
As with rubies, star sapphires are judged by the sharpness of the star, ...
Asterism
The appearance of a rayed figure or rayed star in a gemstone, caused by the reflection of light from minute inclusions. Star Sapphires and Star Rubies are two well-known examples of gemstones featuring a rayed star.
ASTERIATED. Radiated, with rays diverging from a centre, as in a star--as exhibited by an asteriated or star sapphire.
AVICULIDAE. Wing-shells, or Pearl Oysters.
Some inclusions decrease the value of a stone, but some, like rutile forming asterisms in star sapphires and needles in rutilated quartz and tourmalated quartz, are prized. The tumbled stones in the photo to the left are tourmalated quartz.
Black Star Diopsides are occasionally confused with Black Star Sapphires which exhibit six or twelve rays. Chrome Diopside is the variety most often seen faceted, whereas Violane is generally used for beads and inlay work.
Sapphires are most commonly found in blue, but they also exist in a wide range of colors including white, orange, green, and pink. Sapphire is also in the corundum species, and is also a precious gemstone. Star sapphires are also quite common, ...
Inclusions can be solid, liquid, or gaseous. Many inclusions decrease the value of a stone, but some, like rutile forming asterisms in star sapphires and needles in rutilated quartz and tourmalinated quartz, are prized.
A precious gemstone (a type of corundum) that ranges in color from blue to pink to yellow to green to white to purple to pink-orange. Six-sided asterisms (stars) sometimes occur in star sapphires.
An inclusion is a imperfection or flaw in a diamond or other gemstone that affects the stone's clarity. Many inclusions decrease the value of a stone, but some, like rutile forming asterisms in star sapphires and needles in rutilated quartz and ...
Diopside is found in two forms, the black star diopside, and the green emerald-like Chrome diopside.Diopside also offers a classic four rayed star stone that is very much like a black star sapphire ...
Sapphires are extremely hard; only diamonds are harder and can also exhibit asterism (star sapphire) and color changing depending on whether they are viewed in daylight or incandescent light. Hardness=9, S.G.=4.0, R.I.=1.762-1.770.
Sources -- Blackish green four-ray star enstatite cabochons from India and Sri Lanka are plentiful and inexpensive. They are often used as cheap (and much softer) substitutes for black star sapphires.
and rubies of minute tubular internal structure frequently display a beautiful six-pointed star when cut to a round-topped cabochon shape and exposed to direct sunlight or to light from any other single source. Such stones are named "star sapphire" ...
Some sapphires that are cut into a cabochon (dome) shape even display a six-rayed white star. These are called star sapphires, and the ancients regarded them as powerful talismans that protected travelers.
Furthermore, corundum crystals, from which star sapphires have been cut, are found in Beaverhead and Madison Counties. Also, in 1895, the first sapphires were produced from the Cowee Valley in Macon County, North Carolina.
(see lodestone) v
I.
Inclusion - this is a small particle of foreign matter which is contained in a mineral. Many inclusions devalue a stone, but some are prized and make it more valuable - i.e. Star Sapphire.
yellow diamond that will be the feature at the symposium, and an once-in-a-lifetime thrill for viewers. However, that's not the only large gemstone to be featured. Attendees will also have the pleasure of seeing a 111-carat Burmese star sapphire.
Parallel needle-like inclusions are responsible for the effect. Examples include star diopside (4 rays) and star ruby (6 rays). Double asterism (12 rays) can be seen in small percentage of black star sapphires.
 See also: Stone, Star, Diamond, Color, Cut
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