December is unique among the months, boasting not one, but two recognized birthstones: turquoise and tanzanite. Both gemstones offer captivating shades of blue, yet they differ significantly in origin, history, and gemological properties. This article explores the characteristics, historical significance, and modern appeal of these December birthstones, drawing upon available information to provide a comprehensive overview for enthusiasts and those seeking meaningful jewelry.
History and Lore
Turquoise has a long and storied past, deeply interwoven with human culture for millennia. While specific origins are difficult to pinpoint, the most coveted shade, “Persian blue,” has been prized for its striking robin-blue hue. The sources detail its use in jewelry, specifically a dramatic diamond statement ring featuring two cabochon-cut Persian turquoise stones set in 18k white gold, alongside 420 full-cut diamonds weighing 10.50 carats. This exemplifies the stone’s enduring appeal in high-end jewelry.
Tanzanite, in contrast, is a relatively recent discovery. Found in Tanzania in 1967, its introduction to the market was largely driven by Tiffany & Co., who recognized its potential as a competitor to the more expensive sapphire. The company strategically named the gem “tanzanite” to emphasize its unique Tanzanian origin and launched a promotional campaign in 1968. The discovery story itself is rooted in local lore, with Maasai tending livestock finding the blue crystals and alerting a prospector, initially mistaking it for sapphire.
Geological Formation and Sources
Turquoise’s formation occurs in arid regions, often near copper deposits. The sources do not provide specific mining locations beyond the mention of “Persian” turquoise, indicating historical significance of sources in Persia (modern-day Iran).
Tanzanite, however, is exceptionally rare, found within a small area near the Mererani Hills of Tanzania. The sources emphasize its limited geographical origin, stating it is found within only a few square miles. This rarity contributes to its value and desirability. The gem is a blue variety of the mineral zoisite.
Gemological Properties
While a detailed gemological profile is limited within the provided sources, some key properties can be outlined. Tanzanite’s appearance can vary depending on the viewing angle, and it often undergoes heat treatment to enhance its blue hues and minimize brown tones. This treatment is common in the market to improve the stone’s color. It is often substituted for sapphire due to its brilliant hue.
The sources do not provide information on turquoise’s hardness, chemical composition, or refractive index. However, the description of turquoise used in David Yurman jewelry – a station necklace and a cable bracelet with diamonds – suggests it is durable enough for everyday wear.
A table summarizing the limited gemological information available is presented below:
| Gemstone | Color | Origin | Treatment |
|---|---|---|---|
| Turquoise | Robin-blue (Persian Blue) | Persia (historical), unspecified arid regions | Not specified |
| Tanzanite | Blue (variety of zoisite) | Tanzania (Mererani Hills) | Commonly heat-treated |
Symbolism and Metaphysical Beliefs
The sources highlight the symbolic significance of birthstones in general, noting they offer more than just beauty and style, representing protection, luck, and personal significance. David Yurman’s birthstone jewelry is described as fusing timeless elegance with profound meaning. The sources do not detail specific metaphysical beliefs associated with turquoise or tanzanite, but emphasize their value as meaningful gifts.
Care and Cleaning
The sources do not provide specific care instructions for either turquoise or tanzanite. However, given that both are used in fine jewelry alongside diamonds and precious metals, it can be inferred that standard jewelry care practices apply. These include avoiding harsh chemicals, ultrasonic cleaners, and abrasive materials. Gentle cleaning with mild soap and warm water is likely suitable. Further research into the specific care requirements of each stone is recommended.
Modern Interpretations and Jewelry Design
David Yurman prominently features both turquoise and tanzanite in its collections. Turquoise is showcased in a station necklace and a cable bracelet, often paired with diamonds and yellow gold, reflecting the brand’s signature Cable motif. Tanzanite appears in rings, including a cushion-cut stone surrounded by a diamond halo and embellished shanks, and a 25-carat yellow gold ring. These designs demonstrate the versatility of both stones and their ability to complement various styles. The sources emphasize the potential for personalized jewelry, suggesting pairing birthstone pieces with other styles for a coordinated look.
The Significance of Birthstone Gifts
The sources consistently emphasize the importance of birthstone gifts as meaningful gestures that honor individuality. Choosing a birthstone ring or bracelet is presented as a way to offer a gift rich in symbolism and personal significance. The inclusion of zodiac amulets in David Yurman’s collection further highlights the connection between gemstones, astrology, and personal identity.
Conclusion
December’s birthstones, turquoise and tanzanite, represent a captivating duality. Turquoise, with its ancient history and connection to various cultures, offers a sense of tradition and timeless beauty. Tanzanite, a more recent discovery, embodies rarity, sophistication, and a modern appeal. Both stones, as showcased by designers like David Yurman, provide opportunities for creating personalized and meaningful jewelry. The choice between these two December birthstones ultimately comes down to individual preference, style, and the desire to connect with a gemstone that resonates on a personal level.