Next in order of price are sapphire cabochons. Material of good color that is not sufficiently transparent to cut in facets is used to create the domed shape known as cabochon or cab for short. These are most often found in blue and green, and they are often available in sizes up to 10 or 20 carats. They can make some very attractive jewelry that has all the virtues of sapphire at a very affordable price.
Star sapphires are also found in cabochons. Here in Thailand, we see several kinds of star sapphire. Our hometown in the province of Chanthaburi, Thailand produces stunning black sapphires with unique golden-rays that are found nowhere else in the world. We also have blue star sapphires. Blue star sapphires are often diffusion-treated with titanium to improve the asterism star effect.
Larger stones can demand much higher prices, and star sapphires that are untreated or heat-only can fetch very high premiums. Rare, transparent star sapphires do exist but are found mainly in museums.
Moving to faceted sapphire , the lower priced pieces are usually either small gemstones under half a carat , heavily included material or beryllium-treated. We've noticed that the prices for beryllium-treated sapphire have been rising significantly over recent years. Blue be-heated sapphire can still fetch several hundred dollars per carat, especially clean, well-cut gems weighing over 1 carat.
Prices for heated blue sapphire depend very much on color and clarity. Prices typically increase substantially for quality sapphire gems weighing over 2 carats. Several years ago, we had some excellent It difficult to state typical market prices for very fine unheated sapphires , especially since they are so rare. Several years ago, we acquired some outstanding gems from the Diego-Suarez Mine in Northern Madagascar. One piece was a stunning violet blue color, 2. It was a beautifully-cut round faceted stone, a shape that typically commands a high price.
A second unheated piece was a 6. Dimensions are given as; length x width x depth , except for round stones which are; diameter x depth. Select gems by size, not by weight! Gem varieties vary in density, so carat weight is not a good indication of size. Sign In. Change Language. Get Your Gemstone Today.
Shop New Arrivals. Shop Sapphire. Shop Gemstone Lots. They typically also will have feathers or white, cloudy lines inside that can make the sapphire look opaque. It is very rare to find blue sapphires with extremely high clarity, making them very valuable. The price goes up with rarity. The most highly prized sapphires come from Kashmir.
In the Himalaya mountain tops, these precious stones can only be mined a few months in the year. They possess beautiful coloration, but what sets them apart from the rest is their very fine silk. This causes the stone to have a velvety textured appearance. It creates a glow that minimizes extinction at the same time. This effect can only be seen in the Burmese ruby. Sapphires are available in a wide range of colors and sizes, the price ranges starting from a few dollars for heavily included midnight blues.
The most expensive colors are the highly saturated blues, the intensive pinks, and the padparadscha colors. The reason blue sapphires have always come with the highest prices is also related to their large sizes. A pink or a padparadscha can only fetch prices in a similar range if they weigh over carats, but the existence of stones like that with exceptional color and clarity is very rare.
Color and size or weight are the most important factors in determining the price of a sapphire. Beyond the color, clarity, and cut details need to be assessed.
A sapphire stone can always be re-cut, so clarity is probably more important. For larger or smaller stones, however, prices can be extrapolated to some extent but, there is no linear or exponential formula to follow and prices change with time. Synthetic gemstones like the sapphires cano be identified and differentiated from natural gemstones because they are too perfect. This means that the quality is too high. Sri Lanka and the Kashmir region of India and Pakistan have historically been important sources of jewelry-grade sapphires.
But the most valuable sapphire mines can only be used several months out of the year, so sapphires of that provenance sit atop the price apex. Sapphires are chosen and vetted by gemologists after carefully looking at their hue, tone and saturation. As gemstones are visually different than diamonds, the sparkle is not the main criteria. It is the lack of inclusions, durability, and color that make a sapphire truly beautiful.
With Clarity works with sapphire cutters that we have had relationships with for several decades. Through them we can ensure that the sourcing and quality of the sapphires, which we set in sapphire and diamond engagement rings as well as necklaces and earrings, is impeccable. Gemologists carefully select from lots of sapphires to find those that have the best combination of the above three factors. They also factor in the look of the ring and the metal, to ensure that a sapphire with the best hue and color is chosen to complement it.
Sapphires are graded on a scale ranging up to AAA. A sapphire with a AAA rating has the best of all characteristics. With Clarity strives to ensure that sapphires chosen for engagement rings are from this AAA grade bracket.
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