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What Is the December Birthstone?

by Annie Earnshaw
Last updated on August 21, 2023

The December birthstone is actually three birthstones: turquoise, tanzanite, and zircon, which all share a rich blue color. The December birthstones conjure images of crisp, snowy days, no matter the weather. Please note that this post serves educational purposes only. We want to clarify that, at present, we do not offer a selection of turquoise, tanzanite, or zircon jewelry items. However, we encourage you to explore our lab grown diamonds as a captivating alternative to conventionally mined diamonds.

December’s birthstones represent a rich history, from intricate turquoise and striking tanzanite to classic zircon. These gemstones create timeless, unique pieces that are sure to dazzle.

Which December Birthstone Should I Choose?

The perfect December birthstone for you depends on your preferences. Each of these three gemstones offers unique characteristics. They all add style, personality, and quality to your jewelry collection.

First Birthstone: Turquoise

Turquoise Stone

Turquoise’s first December birthstone is turquoise. Turquoise is a dazzling gem known for its vibrant blue color and intricate veins. Unlike tanzanite and turquoise, this December birthstone is opaque rather than translucent. This birthstone also represents the 11th wedding anniversary.

History of Turquoise

The name “turquoise” comes from the French phrase for Turkish stone, which is pierre turquois (pronounced pee-yare turr-qwah). Historians believe that turquoise first came to Europe through Turkey, which is how this December birthstone got its name. A turquoise ring would be gifted to someone symbolizing “forget me not.”

Turquoise has a long, rich history across many ancient civilizations. Pharaohs of Ancient Egypt often wore turquoise. Chinese artisans also carved turquoise more than 3000 years ago.

Since the 13th century, turquoise was believed to grant health and good fortune. Horse riders wore turquoise to prevent them from falling off of their horse.

Turquoise also played an important role in the lives of Native Americans. The Apache believed that turquoise lays at the end of a rainbow rather than a pot of gold. They also attached turquoise to bows and firearms, believing that the birthstone increased their accuracy.

Turquoise also plays a role in recent royal history. Wallis Simpson, Duchess of Windsor, famously wore an amethyst and turquoise necklace made by Cartier.

Where Does Turquoise Come From?

The Nishapur district of Iran has been home to turquoise mining for more than 1000 years. Turquoise from this region is prized for its distinct color, often described as robin’s egg blue, sky blue, or Persian blue.

In the United States, New Mexico has been the biggest producer of turquoise. However, most mining of this December birthstone now exists in Arizona and Nevada.

Today, the Hubei Province in central China is the most significant worldwide producer of turquoise.

Most Common Turquoise Jewelry Settings

December Birthstone Ring
December Birthstone Ring

Most often worn as a ring or pendant, turquoise adds a bohemian look to any outfit. This December birthstone pairs well with all metals. Silver and white gold offer a more modern look, while rose gold and yellow gold add a vintage touch.

Care and Cleaning

Turquoise is a porous gem with a 5 to 6 on the Mohs hardness scale. Thus, this December birthstone can be treated with resin or acrylic epoxy. This treatment improves turquoise’s strength and color. Turquoise can also be treated with a metal-loaded epoxy to fill any cracks. This process creates an effect similar to turquoise’s marbling.

Turquoise is typically not affected by light. However, the gemstone can discolor when repeatedly exposed to high heat. Clean your stone only with warm water and gentle soap. This will allow you to enjoy your turquoise jewelry for many years to come.

Second Birthstone: Tanzanite

Blue-Violet Tanzanite

Tanzanite is a radiant gem. Its velvety hues range from intense blue to violet and can change with the light. This December birthstone also represents the 24th wedding anniversary.

History of Tanzanite

Tanzanite is a newcomer to the birthstone scene. In 1967, Maasai herders found blue stones near Arusha, Tanzania. They informed Manuel d’Souza, a prospector, who quickly started mining what be believed to be sapphires. D’Souza eventually identified the stones not as sapphires but as mineral zoisite.

A year later, Tiffany & co. launched an advertising campaign all about mineral zoisite. They posed the gemstone as a competitor for the more costly sapphire. The campaign marketed the birthstone’s high clarity, richness of color, and potential for large cuts. Tiffany & Co. quickly became tanzanite’s primary distributor.

The blue stone was renamed “tanzanite” in honor of its country of origin. Tiffany & Co. also believed that “tanzanite” was a stronger name from a marketing perspective.

Where Does Tanzanite Come From?

Tanzanite Comes From Northern Tanzania
Tanzanite Comes From Northern Tanzania

Located in northern Tanzania, the Merelani Hills is the only place where tanzanite is currently mined. The mines exist under the shadow of Mount Kilimanjaro, which is the tallest mountain in Africa.

A study from 2012 says that the tanzanite supply is dwindling. Mining operations could deplete Block C, the largest section of mining territory in Merelani Hills, in as little as 30 years. This report caused tanzanite prices to climb. Many experts say that the current generation will be the last to purchase new tanzanite.

Most Common Tanzanite Jewelry Settings

While slightly stronger than turquoise, tanzanite is not immune to damage. To improve the life of your tanzanite, go with tanzanite earrings or pendants instead of rings and bracelets. However, a tanzanite stone with a protective setting can make a lovely occasion ring.

Care and Cleaning

Tanzanite is a 6 to 7 on the Mohs scale. It also resists the effects of light, heat, and common chemicals. However, this December birthstone can crack if exposed to extreme heat or sudden changes in temperature.

Like turquoise, clean your stone with warm water and gentle soap.

Third Birthstone: Blue Topaz

December birthstone: blue topaz.

Blue topaz is a fairly new birthstone for December. The traditional December birthstones were lapis lazuli and turquoise. This stunning stone has a beautiful ocean like look with its blue shades. It is important to note that blue topaz starts off as colorless topaz and then heat treated and irradiated, allowing its signature blue hues to shine. The common shades for this stone are swiss blue and London blue.

History of Blue Topaz

December’s birthstone, blue topaz, was first discovered on the Greek Islands by Romans over two thousand years ago.

The ancient greeks used blue topaz to give them mental and physical strength. Additionally, ancient Egyptians and Romans held this stone in high regard due to its unique beauty. Egyptians used blue topaz to empower their God ‘Ra’. Similarly, Romans used this stone to empower and honor their God ‘Jupiter.’

The name ‘blue topaz’ derives from the Sanskrit word ‘topaz,’ which translates to fire. Blue topaz is a sacred stone in the Hindu religion.

Between the 1300s-1600s, many people in Europe believed that topaz could break spells and dispel anger. Due to its various healing properties, topaz was used in various spiritual practices.

Where does Blue Topaz Come From?

Miners have found colorless topaz in Sri Lanka, Russia, Brazil, and Texas. However, the stones appear to be paler in Sri Lanka, Russia, and Brazil compared to the stones found in Texas. Texas has a few natural blue topazes that glow effortlessly.

Most Common Blue Topaz Jewelry Settings

Decembers birthstone, blue tanzanite in a ring settings.

Blue topaz is a strong stone used for earrings and rings. Blue topaz has a range of shades, making it easy to find a shade that fits you! This stone is perfect for everyday wear when placed in a safe and secure setting.

Care and Cleaning

Although blue topaz is rated an 8 on the Mohs scale of hardness, it needs to be handled with care as it can get scratched easily. Furthermore, it’s best to avoid direct sunlight on this birthstone because it can cause its color to fade. Similar to other gemstones, it’s important to clean blue topaz with warm water, soap, and a soft cloth.

Third Birthstone: Zircon

Blue Zircon Gemstones
Blue Zircon Gemstones

Zircon is a brilliant and underrated gem with a vibrant history. This December birthstone has historical value because of its relevance to geology and culture.

However, zircon looks like other gems to the naked eye. Zirconregularly confused with cubic zirconia, which is a lab grown diamond simulant. Diamond stimulates are fake, whereas lab grown diamonds are real diamonds. Colorless zircon looks like a diamond to the naked eye because of the gemstone’s brilliance. This can make the birthstone appear as if it has twice as many facets.

History of Zircon

Zircon is the oldest mineral on earth and dates back 4.4 billion years. Zircon gives us a look at the past because it describes pressure changes and erosion shifts throughout the earth’s history.

The origins of the word “zircon” are unclear. The name could date back to zakrun in Arabic (which means “cinnabar” or “vermillion) or zargun in Persian (which means “gold-covered”).

During the Middle Ages, many thought that zircon would induce sleep, ward off evil spirits while sleeping, and help physical problems such as blisters, sores, and varicose veins.

This December birthstone is also one of the nine gemstones from the navaratna, a jeweled pendant representing the Hindu religion’s heavenly bodies. This powerful talisman protects against negative energies, brings good health, and amplifies the protections and gifts of each of the nine gemstones.

In more recent history, the English had a taste for zircon during the Victorian period. Many estate pieces from the time feature shades of zircon. Cloudy or smoky zircon was also a popular choice for jewelry while in mourning.

Where Does Blue Zircon Come From?

Elahera, Sri Lanka, is a productive mining region for zircon. Sri Lanka, nicknamed the Gem Island, also produces blue, yellow, and pink sapphire, hessonite garnet, tourmaline, moonstone, quartz, and more.

Australia’s Harts Range also mines lots of zircon and tends to produce yellow-brown, orangy-brown, pink, and purple zircon. Zircon Hill is the home of the December birthstone in Australia. Australia leads zircon production and accounts for 37% of all zircon gemstones mined today.

Mining companies often produce zircon and sapphire in similar regions because the two gems tend to develop close to each other. In addition to Sri Lanka and Australia, zircon and sapphires overlap in Myanmar, Vietnam, and Cambodia.

Most Common Zircon Jewelry Settings

Blue Zircon in Yellow Gold Setting
Blue Zircon in Yellow Gold Setting

While zircon appears in lots of colors, blue is the most popular because it’s one of December’s birthstones.

Zircon’s strength makes it perfect for everyday wear as earrings, rings, necklaces, and more. Like with tanzanite, jewelers recommend a protective setting when wearing zircon as a ring. This is because rings experience more wear and tear than earrings and necklaces.

Care and Cleaning

Zircon ranges from 6.5 to 7.5 on the Mohs scale and typically undergoes heat treatment to create various blue and colorless shades. Zircon is stable when exposed to light and heat, but these conditions can cause some gemstones to turn back to their original coloring.

Turquoise and tanzanite are like other December birthstones, in that way, they can scratch, making it important to clean them using a soft brush or warm, soapy water.

What Do the December Birthstones Represent?

Like the language of flowers, each birthstone sends a different message.


According to folklore, this December birthstone is a love charm. It also symbolizes good fortune and protects against harm.


Tanzanite’s meaning varies based on its color—the darker the stone, the more powerful the meaning.

Violet hues represent majesty, mystery, and magic, which are closely associated with the color purple throughout history. Darker tanzanite stones in both blue and purple also represent royalty because of the depth and richness of their color. Indigo tanzanite stones symbolize the heart, intellect, intuition, and purity.

Blue Topaz

Blue topaz represents loyalty and is associated with true love and trust. It is believed that this stone helps to get rid of fear and worries, allowing its wearer to be their best self.

Blue Zircon

Zircon represents the purity of the mind and a clear path to wisdom. This December birthstone also symbolizes honor and prosperity while fostering self-confidence. Also, blue zircon reminds the person wearing it of forgotten wishes.

Ideal Lighting

Lighting significantly impacts how we see gemstones and can impact their color and vibrance. Depending on the type of light and time of day, the same gemstone may look entirely different.

White light or daylight in the middle of the day is mostly neutral, but each gem’s unique structure sparkles under different conditions.

Turquoise Ideal Lighting

Traditionally set in silver, turquoise is highly versatile and pairs well with many colors. Turquoise’s opacity and vibrance largely protect the stone from the influences of different types of light. Nonetheless, turquoise is a great choice to elevate a daytime outfit or add polish and intrigue to a night out.

Tanzanite Ideal Lighting

Tanzanite’s color can easily change depending on the lighting. Natural light draws out the gemstone’s vibrant blue color, while artificial light can make the same stone appear violet. Keep this in mind when pairing tanzanite with other jewelry and outfits. Indoor lighting might make the stone look violet. However, an outdoor setting will play up the stone’s blue tones during the day.

Ideal Lighting for Blue Topaz

Blue topaz looks stunning in natural daylight as it makes the deep blue hues shine beautifully. Although this gemstone looks beautiful during the day, it’s essential to keep it out of direct sunlight to keep it from changing colors.

Ideal Lighting for Zircon

Zircon’s amazing light dispersion (also known as fire) causes the gemstone to appear extra vibrant. Under white light, zircon creates a rainbow effect that makes the gemstone very bright. Wearing zircon during the day or any time you’re in the sun will double your stone’s sparkle.

Lab Grown December Birthstones

Natural gemstones can have a long and unethical history, including labor exploitation and environmental damage. If you want to sport one of December’s birthstones with peace of mind, consider a lab grown gemstone.

What Are Lab Grown Gemstones?

Lab Grown Diamond Tennis Bracelets

Lab grown gemstones are an ethical and environmentally-responsible choice. In addition, lab grown gemstones cost 20-40% less than mined stones.

The process of creating lab grown gemstones mirrors the process of natural gemstones. Thanks to modern technology, labs can recreate the temperature and pressure of the earth. This technology creates stones that are both ethical and beautiful.

Lab grown gemstones feature the same chemical composure as natural gemstones; the naked eye can’t tell the difference between the two.

Lab Grown Turquoise

Lab grown turquoise is a budget-friendly choice that offers the same chemical, physical, and optical properties as natural turquoise. Some lab grown turquoise features inclusions that mimic the famous vein-like pattern of natural turquoise.

Lab Grown Tanzanite

Tanzanite does not have a lab grown counterpart and is only available as a natural stone. Tanzanite has several imitations that try to replicate its distinctive, intense blue. The most common frauds are cubic zirconia, synthetic spinel, yttrium aluminum garnet, and colored glass. Amateur gemologists can easily see which is which using an inexpensive tool called a dichroscope.

Lab Grown Blue Topaz

Blue topaz is not only treated in a lab, but it can also be created in a lab. The blue color that topaz ranges in, comes from it being heated in a lab. In order for blue topaz to have its blue hues, it has to be treated within a lab, as most topazes are colorless stones.

Lab Grown Zircon

Like tanzanite, blue zircon does not have a lab grown counterpart. It does, however, have a lab grown simulant: synthetic spinel. Scientists first discovered synthetic spinel when they tried to create a lab grown sapphire. Instead, they made synthetic spinel. Spinel can also imitate ruby, sapphire, diamond, aquamarine, tourmaline, and more.

Continue the birthstone rabbit hole here.

Published by Annie Earnshaw

Annie Earnshaw is a content intern at Clean Origin.