December is unique among the months, boasting not one, but two recognized birthstones: blue zircon and tanzanite. Both gemstones offer a captivating allure, though their origins, histories, and gemological properties differ significantly. This article will delve into the characteristics of these December birthstones, exploring their historical context, geological sources, and the qualities that make them prized possessions.
A History of Reverence and Recent Discovery
Zircon holds a much longer history of human appreciation than tanzanite. Its name originates from the Persian word “zargun,” meaning “gold-colored,” reflecting the gem’s initial prevalence in golden hues. However, the gem is found in a wide array of colors. Revered since ancient times, zircon was considered a protective talisman in the Middle Ages, believed to bestow wisdom and honor upon its wearer. Today, the most popular variety for December birthstone jewelry is the brilliant blue zircon, celebrated for its exceptional sparkle.
Tanzanite, in contrast, is a relatively recent discovery. It was first found in 1967 near Mount Kilimanjaro in Tanzania, hence its name. Its emergence in the gem market is a 20th-century phenomenon, quickly gaining recognition for its mesmerizing blue-violet color. It is often considered one of the most exciting gem discoveries of the last century.
Geological Origins and Mining Locations
Blue zircon is sourced from several locations worldwide, including Cambodia, Sri Lanka, and Australia. These regions provide the gem in a variety of colors, with the blue variety being particularly sought after for birthstone jewelry. The gem’s durability and versatility make it suitable for a range of jewelry types, from rings to pendants.
Tanzanite’s geological story is far more concentrated. It is found exclusively in a small region of Tanzania, near Mount Kilimanjaro. This singular origin contributes to its rarity, as it is mined from a limited geographical area. The gemstone’s distinctive color is attributed to trace amounts of vanadium present during its formation. This limited source makes tanzanite rarer than diamonds.
Gemological Properties: A Comparative Overview
While both are beautiful gemstones, zircon and tanzanite possess distinct gemological properties. Blue zircon is known for its intense sparkle, often rivaling that of a diamond. The sources do not provide specific details on zircon’s chemical composition or refractive index. However, they highlight its durability, making it suitable for everyday wear.
Tanzanite, on the other hand, exhibits a unique characteristic: pleochroism. This means the gemstone displays different colors when viewed from different angles, adding to its allure. Its mesmerizing blue-violet hue is caused by the presence of vanadium. The sources do not provide a chemical formula or hardness for tanzanite.
The following table summarizes the key properties as presented in the provided sources:
| Property | Blue Zircon | Tanzanite |
|---|---|---|
| Origin | Cambodia, Sri Lanka, Australia | Tanzania |
| Color | Brilliant Blue | Blue-Violet |
| Historical Significance | Wisdom, Honor | Recent Discovery |
| Rarity | Relatively Common | Very Rare |
| Sparkle | Diamond-like | Mesmerizing |
| Pleochroism | Not Mentioned | Present |
Symbolism and Modern Significance
Historically, zircon was believed to provide wisdom and honor to its wearer. This symbolism reflects the gem’s long-standing association with protection and positive attributes. Today, the blue variety is often chosen for its aesthetic appeal and vibrant color, representing December birthdays with a touch of classic elegance.
Tanzanite, being a more recent discovery, has developed a symbolism linked to transformation and new beginnings. Its unique color and rarity contribute to its association with individuality and sophistication. It is often seen as a gemstone that encourages positive energy and spiritual growth.
Jewelry Applications and Care
Both blue zircon and tanzanite are popular choices for a variety of jewelry pieces. Zircon’s durability makes it suitable for rings, earrings, bracelets, and pendants. Its radiant wintery glow complements any precious metal, offering a timeless elegance.
Tanzanite is frequently featured in pendants, earrings, and rings. Its captivating color and pleochroic effect make it a stunning centerpiece for any jewelry design. The sources do not provide specific care instructions for either gemstone. However, given their relative hardness (not specified in the sources), it is advisable to protect them from harsh impacts and abrasive materials.
December Birthstone Jewelry: A Modern Celebration
The provided sources showcase a range of jewelry featuring both December birthstones. Blue topaz drop earrings, crafted in silver or gold, are presented as a celebratory gift for December birthdays. Blue topaz teardrop earrings, set in 14K yellow gold plated settings, are also highlighted. Tanzanite is featured in rings, earrings, pendants, and necklaces, often paired with diamonds to enhance its brilliance. The availability of various designs, from solitaire pendants to halo earrings, caters to diverse tastes and preferences.
The sources also mention Swiss blue topaz, London blue topaz, and Tanzanite jewelry, indicating a variety of shades and styles available to consumers.
Conclusion
Blue zircon and tanzanite represent the captivating duality of December’s birthstones. Zircon, with its ancient history and protective symbolism, offers a timeless elegance. Tanzanite, a more recent discovery, embodies rarity, transformation, and a mesmerizing beauty. Both gemstones provide a stunning way to celebrate December birthdays, offering a unique and meaningful connection to the natural world. The availability of diverse jewelry designs ensures that there is a perfect piece to suit every style and preference.