September Birthstones | How to buy Sapphire Gemstones & Jewelry

AUGUST BIRTHSTONES

Sapphire

How to Buy Sapphire



Sapphires make stunning jewelry gifts for anyone born in September or celebrating a 5th or 45th wedding anniversary. Whatever your reason for buying sapphire, you can’t go wrong with this brilliant gemstone, whether you’re seeking classical blue or another shade of the sapphire rainbow.

The qualify factors of sapphires are not as clearly defined as other gemstones like diamonds, but generally the 4Cs still apply. 

Like diamonds, sapphires are assessed by the 4Cs; color, clarity, cut, and carat size, in addition to country of origin.

Color is the key indicator of a sapphire’s price. The highest valued sapphires are vivid blue, sometimes with a violet hue. Secondary hues of green or gray detract from sapphire’s value.

Sapphire gemstones come in almost any color except red, which is classified as ruby. Pinkish orange varieties are known as padparadscha, and these typically have higher per-carat values than other colors of fancy sapphire.

Some sapphire stones even exhibit color change, shifting from blue in daylight or fluorescent light to reddish purple under incandescent light, much like the color-changing alexandrite gemstone.

Blue sapphires typically have better clarity than rubies, though they often have long, thin rutile inclusions called “silk.” Inclusions generally make gemstones less valuable, but they can increase the value of sapphires that exhibit asterism, or stars; the four or six rayed star pattern of light produced by the fibrous inclusions, elongated needles, or growth tubes in a gemstone. This singular, celestial-like phenomenon is best seen in a gemstone cut en cabochon.

Blue sapphire gems can range in size from a few points to hundreds of carats. Most commercial-quality blue sapphires weigh less than five carats. Large blue sapphires, while rare, are more readily available than large rubies.

The 423-carat Logan Sapphire in the National Museum of Natural History is one of the largest faceted gem-quality blue sapphires ever found. The Star of Adam is the largest blue star sapphire, weighing 1404.49 carats.

Sapphires are often treated with heat to improve color and clarity. Untreated natural gemstones are somewhat rare and incredibly valuable.

Find an American Gem Society jeweler that can help you select the right sapphire birthstone jewelry for you.


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Mission Statement

The American Gem Society (AGS) is a nonprofit trade association of fine jewelry professionals dedicated to setting, maintaining and promoting the highest standards of ethical conduct and professional behavior through education, accreditation, recertification of its membership, gemological standards, and gemological research.

The Society is committed to providing educational products to inform and protect the consumer and to contributing to the betterment of the trade by creating industry standards to protect the jewelry-buying public and the fine jewelry industry as a whole.

AGS Laboratories, founded to support the AGS mission, is a nonprofit diamond grading laboratory with a mission of consumer protection. Adhering to the AGS Diamond Grading Standards, AGS Laboratories is dedicated to offering diamond grading reports that provide consistency and accuracy based on science.

American Gem Society

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info@ags.org (866) 805-6500