December Birthstone Jewelry: A Celebration of London Blue and Ruby

December, the final month of the year, is associated with two birthstones in the modern birthstone tradition: London Blue topaz and ruby. These gemstones are celebrated in jewelry collections such as those from Kendra Scott, who offers a range of December birthstone-inspired pieces. This article delves into the gemological properties, cultural significance, and practical considerations of these stones, focusing on their use in jewelry and their historical and symbolic importance.

Introduction

December birthstones are traditionally represented by London Blue topaz and ruby. London Blue topaz, with its striking blue coloration, and ruby, known for its deep red hue, are both treasured for their beauty and symbolism. These gemstones have been used in jewelry for centuries and are now featured in modern collections, such as the Kendra Scott Elisa Necklace and Marisa Pendant Necklace. This article explores the geological origins, gemological characteristics, cultural meanings, and care requirements for these December birthstones, drawing on information from various sources related to their use in jewelry design.

History and Lore

London Blue topaz and ruby have long been associated with December and have been used in jewelry since ancient times. While the modern system of assigning gemstones to specific months was formalized in the 20th century, the historical significance of these stones can be traced back to earlier civilizations.

London Blue topaz, a variety of topaz, is known for its deep blue color, which is achieved through irradiation and heat treatment. Though topaz was used in ancient Egypt and was believed to have protective properties, its association with December is relatively recent. The modern designation of London Blue topaz as a December birthstone reflects its popularity in jewelry, particularly in the 20th century. The name “London Blue” is derived from the color of the stone, which resembles the smoky blue hue of the Thames River in London during the winter months.

Ruby, on the other hand, has a much longer and more storied history. Known as the “King of gems,” ruby has been revered for centuries in many cultures, particularly in Southeast Asia, where it is considered a symbol of power, passion, and protection. The association of ruby with December is rooted in its enduring appeal and its deep red color, which is often linked to themes of love and vitality.

In the context of modern jewelry, the Kendra Scott Elisa Necklace and Marisa Pendant Necklace are representative of how these traditional gemstones are incorporated into contemporary designs. The Elisa Necklace, for example, features London Blue topaz in a setting that combines elegance with modern aesthetics. Similarly, the Marisa Pendant Necklace showcases a ruby in 14k yellow gold, offering a classic yet refined look.

Geological Formation and Sources

London Blue topaz is a type of topaz that has been treated to enhance its color. Naturally occurring topaz is found in various colors, including yellow, brown, and pink, but the deep blue color of London Blue topaz is not found in nature. Instead, it is created through a process that involves irradiation and heat treatment. This treatment alters the atomic structure of the stone, resulting in its characteristic blue hue.

Topaz is a silicate mineral composed of aluminum, silicon, and fluorine, with a chemical formula of Al₂SiO₄(F,OH)₂. It has a hardness of 8 on the Mohs scale, making it relatively durable and suitable for use in jewelry. The treatment process used to produce London Blue topaz does not affect its hardness or durability, ensuring that it remains a practical choice for everyday wear.

London Blue topaz is primarily sourced from Brazil, which is the world’s leading producer of topaz. Other sources include Nigeria and the United States. The treatment process used to create the blue color is standardized in the industry, ensuring that the gemstone’s appearance is consistent and long-lasting.

Ruby, in contrast, is a naturally occurring gemstone with a deep red color due to the presence of chromium. It is a variety of the mineral corundum, which is composed of aluminum oxide (Al₂O₃). Ruby has a hardness of 9 on the Mohs scale, making it one of the hardest gemstones after diamond and moissanite. This high hardness makes ruby ideal for use in jewelry, particularly in rings and pendants that are worn frequently.

Rubies are found in various locations around the world, including Myanmar (Burma), Thailand, Sri Lanka, and Madagascar. Myanmar is particularly known for producing high-quality rubies, with the most famous being the “Pigeon’s Blood” ruby, which has a deep red color with a slight blue secondary hue.

In jewelry collections such as those from Kendra Scott, rubies are often used as center stones in pendants and earrings, while London Blue topaz is used in a variety of designs, including necklaces, earrings, and bracelets. These gemstones are chosen not only for their beauty but also for their durability and versatility in design.

Gemological Properties

London Blue topaz and ruby have distinct gemological properties that make them suitable for use in jewelry. London Blue topaz has a hardness of 8 on the Mohs scale, a refractive index of 1.61–1.63, and a specific gravity of 3.53. It is a transparent gemstone with a vitreous luster and is available in a range of blue shades, with London Blue being the most popular.

Ruby, with a hardness of 9 on the Mohs scale, is one of the hardest gemstones and has a refractive index of 1.76–1.78. It has a specific gravity of 4.00 and is known for its deep red color, which is caused by the presence of chromium. Ruby has a vitreous luster and is often cut in a round or oval shape to enhance its brilliance.

Both gemstones are popular in jewelry due to their durability and beauty. London Blue topaz is particularly favored for its affordability and vibrant color, making it an accessible option for those who want to wear a December birthstone. Ruby, while more valuable, is also highly sought after for its rarity and deep red color.

In the Kendra Scott collections, these gemstones are often set in gold or silver, with settings that complement their colors and enhance their brilliance. For example, the Elisa Necklace features London Blue topaz in a setting that highlights its clarity and color, while the Marisa Pendant Necklace showcases a ruby in 14k yellow gold, emphasizing its warmth and richness.

Symbolism and Metaphysical Beliefs

London Blue topaz and ruby have been associated with various meanings and metaphysical properties throughout history. London Blue topaz is believed to promote calmness, clarity, and inner peace. It is also associated with wisdom and intuition, making it a popular choice for those seeking emotional balance and mental clarity.

Ruby is traditionally associated with passion, love, and vitality. It is believed to enhance courage, strength, and vitality, making it a powerful gemstone for those who want to boost their confidence and energy. Ruby is also considered a protective stone, believed to ward off negative energies and promote a sense of security.

In many cultures, ruby has been used in royal jewelry and is considered a symbol of power and nobility. London Blue topaz, while not as historically significant as ruby, is gaining popularity in modern metaphysical practices for its calming and balancing properties.

In the context of jewelry, these gemstones are often chosen not only for their aesthetic appeal but also for their symbolic meanings. The Kendra Scott Elisa Necklace and Marisa Pendant Necklace, for example, are designed to reflect the positive qualities associated with these stones, making them meaningful and meaningful gifts for loved ones.

Care and Cleaning

Proper care is essential to maintain the beauty and longevity of London Blue topaz and ruby jewelry. London Blue topaz is relatively durable and can be cleaned with warm, soapy water and a soft cloth. It is important to avoid harsh chemicals and abrasive cleaners, as these can damage the stone’s surface. Ultrasonic cleaners are generally safe for London Blue topaz, but it is advisable to consult a professional jeweler before using one.

Ruby, with its high hardness and durability, is also suitable for everyday wear. It can be cleaned with warm, soapy water and a soft cloth. Like London Blue topaz, it should be avoided harsh chemicals and abrasive cleaners. Ruby is also suitable for ultrasonic cleaning, but it is best to have it professionally cleaned to ensure that it remains in optimal condition.

When storing London Blue topaz and ruby jewelry, it is important to keep them in a cool, dry place away from direct sunlight. Storing them separately can help prevent scratches and damage. It is also advisable to have the jewelry inspected by a professional jeweler regularly to ensure that the settings remain secure and that the stones are in good condition.

Conclusion

December birthstones, London Blue topaz and ruby, are celebrated for their beauty, durability, and symbolic significance. London Blue topaz, with its vibrant blue color, and ruby, with its deep red hue, are both treasured in jewelry collections such as those from Kendra Scott. These gemstones have a rich history and are associated with various meanings, making them meaningful choices for personal adornment and gifting.

Whether used in the Elisa Necklace or the Marisa Pendant Necklace, London Blue topaz and ruby continue to captivate jewelry lovers with their timeless appeal. With proper care and appreciation for their gemological properties and cultural significance, these December birthstones can be enjoyed for generations to come.