Cobalt Blue
Celestial Blue Sapphire
Sapphire, the name has originated from Latin ‘sapphirus’ meaning blue and the Persian “safir’ signifying beloved of Saturn. That is it. Now what you will find, as you continue reading below, wouldn’t resemble the same monotony on this gemstone, which almost 90% of the online material would provide.
Apart from the same matter like blue and other types of colors found in this crystal, there is much more to provide to buyers. This includes information about color zoning, enhancements, or treatments, and imitations.
Pleochroism in corundum family, makes sapphire, a color zone prone stone. Color zone in this stone indicates towards the growth layers of mineral. It actually is in the form of series of concentric hexagons parallel to prismatic crystal faces. Like known, color and clarity of a gemstone, play a vital role in its pricing.
While valuing blue sapphire, a stone with a violet overtone, with no hints of grey or green, is preferred. As above, irregular color coverage, or dispersion is detracting from its value and beauty. A properly faceted stone can solve a stone’s color zoning problem and enhance its color coverage.
In addition, more color coverage ensures high saturation, seen in normal viewing positions. Sapphire gems cut too shallow can decrease color coverage.
As a precaution, sapphire shouldn’t be cut too shallow or deep, for that matter, since excessive deep-cutting is a sacrifice on brilliance.This creates black areas as ‘extinction’.
Whereas a shallow cut could result in appearance of short light paths called as ‘windows’. Therefore, most large sapphires are in oval, emerald or cushion cuts and the smaller ones are able to fancy other kind of shapes too.
There is rarely a sapphire which is flawless. Sapphires are usually found with inclusions. In addition, inclusions and clarity go together. Clarity is basically based on factors such as size, number, contrast, and location.
However, there are cases of sapphires with inclusions, which are relatively highly- valued just like flawless ones. Since sapphire is a hard stone, it does contain preferred directions of parting which shows, that material can be brittle in spite of its hardness.
Many internal conchoidal fractures and or cracks can weaken a stone. Nevertheless, there are very less chances when sapphire as a jewel has failed first, as compared to the metal work, during years of wear and tear.
Going back to clarity, it is decided by referring to its inclusions. Fracture filling is a common industry practice which includes oil, wax, paraffin, and glass and epoxy resin as fillers. After this, color of stone is still not diminished and fractures are non-reflective.
An enhancement like heat-treatment is also widely practiced. A permanent practice, heating facilitates melting of any silk inclusion plus intensified color. Whereas irradiation is a temporary process of intensifying color.
Numerous imitations or doublets are sold to travelers in Far East, since they are difficult to be separated from the natural sapphire gemstones. Even gemological tests, after setting in jewelry fail to catch the culprit.
Presence of misnomers, like ruby as red spinel and red garnet was prevalent during 1800’s. Still today, this malpractice is found to be conducted intentionally.
For example, a cobalt-blue glass is stuck with a crown of garnet, or a low-grade sapphire crown and pavilion are simply glued together with a colored epoxy. This results into a fake yet creation of a blue sapphire with an expensive hue reflection.
About the Author
Jewelry is not just in writing but a fascination for me. I grew into it since the day I started my research. There is a lot that one needs to know about jewelry simply because they are so valuable that you cannot afford to miss a single bit. My alliance with online gemstone and jewelry selling website enables me to bring you the best of jewelry fashion and jewelry education.
The Back Horn – Cobalt Blue
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Pyrex 6004023 6-Piece Glass Rectangular Storage Set with Blue Lids $13.98 Corning 6-Piece Pyrex Bake ‘N Store Dish Set includes 3 Cup, 6 Cup & 11 Cup Rectangular Dishes with Dark Blue Plastic Covers…. |
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Le Creuset BB0733-30 Amazon.com Exclusive 3-Piece Silicone Spatula Set, Cobalt Blue $24.95 Set includes 10 1/4″ Small Spatula, 11″ Medium Spatula and 11 1/4″ Large Spatula Spoon… |
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Lux Mechanical Classic Timer This Lux timer is in a very attractive vibrant nickel finish. Lux timers are used all over the world in kitchens, food service, medical/dental labs, schools/offices, beauty/nail salons and in thousands of other uses. Lux timers have been an American icon since 1912. They are renowned for their quality and reliability. They are highly accurate and can be set from one-minute to one-hour. It has an a… |
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DEWALT DW1956 Pilot Point 16-Piece Twist Drill Bit Assortment $18.43 The DeWalt DW1956 16-piece Pilot Point twist drill bit assortment comes with pilot point tips for starts on contact that result in clean, accurate holes. These bits are designed to reduce lock-up on breakthrough, and also feature a no-spin shank that eliminates the frustration of bit spinning in the chuck. Other features include a tapered web for greater durability and reduced breaking, and size m… |
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8 piece Easy Out Screw Bolt Extractor Set $6.35 Large 8 piece Easy Out Screw and Bolt Extractor Set. This unit features: High Carbon steel construction, Extractor sizes: 5/32″, 5/16″, 1/4″, 9/32″, 7/16″, 5/8″, 15/16″, Includes Blow molded case… |
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Tongue Cleaner Cobalt Blue by Tongue Cleaner Company Scientific studies show that the tongue is a prime contributor to bad breath and other oral health problems. Especially during sleep, the tongue is coated with a plaque film of bacteria and other odor causing compounds. This is why even after brushing your teeth, fresh breath is difficult to maintain. The bacteria on the tongue is also a potential contributor to periodontal problem and other oral … |
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PURELINE ORALCARE (Tongue Cleaner Company) Tongue Cleaner Pearl White 1 UNIT $3.00 Tongue Cleaner is used to scrape the tongue in order to help reduce bacteria improve breath and increase oral hygiene…. |
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Don Wand Glass Bubble Plug, Colbalt Blue $14.70 Don Wands glass stays cleaner than plastic or rubber toys. Don Wands are made from Borosilicate glass (more commonly known as Pyrex). It is non porous which makes it easy to clean and keep germ free. Your Don Wands glass toy will last more than a lifetime when properly cared for. Don Wands glass is extremely durable and will not scratch easily. Don Wands Glass Pleasure Wands are Hypoallergenic and… |
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