What is the birthstone for September?

What is the birthstone for September?

The September birthstone is sapphire – a gem that’s been cherished for thousands of years. Although the term sapphire usually refers to the blue variety of corundum (ruby is the red variety), this birthstone comes in a rainbow of other colors. Sapphires have been long associated with royalty and romance and are also said to symbolize fidelity and the soul. “Sapphire” comes from the Greek word sappheiros and blue sapphire is one of the most popular colored stones. Read on to learn more about the September birthstone, specifically its history and where it can be found.

In addition to being the September birthstone, sapphire is also the gem commemorating the 5th and 45th wedding anniversaries.

 

The famed Rockefeller Sapphire weighs 62.02 ct. Here it is flanked by two cut-cornered triangular

cut diamonds, mounted in a platinum ring signed Tiffany & Co. Courtesy: Christie’s Images Ltd., 2015

The September birthstone has traditionally symbolized sincerity, truth, faithfulness and nobility. For countless centuries, sapphire has adorned royalty and the robes of the clergy. The elite of ancient Greece and Rome believed that blue sapphires protected their owners from harm and envy. Clerics of the Middle Ages wore sapphires because they symbolized Heaven. Ancient Persians believed the earth actually rested on a giant sapphire, which made the sky blue.

 

The September birthstone was reputed to have healing powers as well. Medieval Europeans believed that sapphire cured plague boils and diseases of the eye. The sapphire birthstone was also thought to be an antidote to poison.

 

Famous sapphires include the Rockefeller Sapphire, a 62.02 carat (ct) rectangular step cut stone that was unearthed in Myanmar (Burma). Acquired in 1934 by financier and philanthropist John D. Rockefeller, Jr. (1874–1960) from an Indian maharaja, the gem was recut and remounted over the years. The sapphire was first set as a brooch and later as a ring featuring two cut-cornered triangular diamond side stones. Perhaps the best-known sapphire in recent years is the 12.0ct blue gem surrounded by diamonds in the sapphire engagement ring first worn by Princess Diana and then given by her son to Kate Middleton, now Duchess of Cambridge.

 

Where Is Sapphire Found?

Kashmir, Myanmar (formerly Burma) and Sri Lanka are three historically important sources for the September birthstone. Significant quantities of the September birthstone have also been found in Australia, Thailand, Cambodia, Madagascar and the United States (Montana), among other countries in Asia and Africa.

Sapphire Birthstone Care & Cleaning

The September birthstone is relatively hard, ranking 9 on the Mohs scale. It has excellent toughness and no cleavage, which is a tendency to break when struck. This makes it a great choice for rings and other mountings subject to daily wear.
 
Note: Sapphires are often treated to improve their color or clarity. Heat treatment is common – and the results permanent – so it is well accepted in the trade. Less common treatments such as lattice diffusion, fracture filling and dyeing may require special care. In some cases, the color induced by lattice diffusion is so shallow it could be removed if the stone was chipped or had to be recut. Fracture-filled and dyed sapphires can be damaged by even mild acids like lemon juice. Before you buy a sapphire, always ask if it is treated and by what method.

Warm, soapy water is always a safe choice for cleaning the September birthstone. Ultrasonic and steam cleaners are usually safe for untreated, heat-treated and lattice diffusion–treated stones. Fracture-filled or dyed material should only be cleaned with a damp cloth.

Thank you for reading the “Ask Diamond Jim” column!

Diamond Jim is a master jeweler, diamond dealer and precious metals broker. Pineforest Jewelry has been a proud member of the Independent Jewelers Organization and the Retail Jewelers Organization for many years. See more at: www.pineforestjewelry.com.

If you have questions pertaining to jewelry, watches, diamonds, precious stones, precious metals, and other questions related to the jewelry industry, email jcihak@pineforestjewelry.com.