Spinel
In Matrix ± 1 billion yrs. BC - ± 485,4 million yrs. BC. Found: Adrembesoa, Betafo, Madagascar (JN0840)
Magnesium Aluminium Oxide
Chemical Formula: MgAl2O4
Crystal System: Isometric
Crystal Habit: Octahedral or flat triangular plates caused by twinning
Mohs Scale: 7,5-8
Tenacity: Brittle
Fracture: Uneven, irregular, conchoidal
Color: black, blue, violet, green, brown, pink
Streak: Greyish white
Luster: Vitreous
Diaphaneity: Transparant, translucent
Spinel: A Gemstone with a Glittering History
Have you ever seen a stunning piece of jewelry with a vibrant red stone that catches your eye? It might just be a spinel! This gemstone, often mistaken for its flashier cousin, the ruby, boasts a rich history, diverse features, and captivating qualities that make it a unique gem in the world of jewelry. So, let's dive deeper and explore the fascinating world of spinel!
What exactly is Spinel?
Spinel, a member of the spinel group of minerals, is a magnesium aluminum oxide (MgAl₂O₄). Its name comes from the Latin word "spinella," meaning "little spine," referencing the pointed crystal shapes it often forms. While most commonly known for its vibrant red hue, spinel actually comes in a dazzling array of colors, including pink, orange, blue, green, black, and even colorless!
The Chemistry behind the Colors:
Unlike some gemstones where the color comes from their inherent chemical composition, spinel's color is determined by the presence of trace elements acting as "impurities." These elements, like chromium, iron, and cobalt, absorb some wavelengths of light while reflecting others, resulting in the various colors we see. For example, chromium gives spinel its stunning red color, similar to a ruby, while iron contributes to its blue and green shades.
A Look Back in Time: The History of Spinel:
Spinel has a long and fascinating history, dating back thousands of years. Evidence suggests its use in jewelry as early as 2500 BC in ancient civilizations like Egypt and Greece. These civilizations prized spinel for its beauty and durability, believing it possessed mystical powers.
The "Black Prince's Ruby": A Case of Mistaken Identity:
One of the most famous historical spinels is the "Black Prince's Ruby," a large, red gemstone embedded in the British Imperial State Crown. However, despite its name, the stone is actually a spinel! This mistaken identity highlights the earlier confusion between spinel and ruby due to their similar appearance. It wasn't until the 18th century that advancements in gemology allowed for a clearer distinction between the two gemstones.
Beyond Red: The Diverse World of Spinel Colors:
While the red spinel continues to be a popular choice, its diverse color palette offers something for everyone. Pink spinels, known as "Balas rubies," were historically valued for their resemblance to rubies and were used by royalty across Europe. Vivid blue spinels, sometimes called "ceylon sapphires," bring a touch of the ocean to jewelry, while the vibrant green spinels are often mistaken for emeralds.
Spinel's Physical Properties:
Spinel is a relatively hard gemstone, ranking 7,5 to 8 on Mohs scale of mineral hardness. This makes it durable and suitable for everyday wear in jewelry. However, like all gemstones, it requires care to prevent scratches and chipping.
Where is Spinel Found?
Spinel is found in various locations around the world, with some of the major sources being Sri Lanka, Myanmar, Afghanistan, Tajikistan, and Tanzania. The quality and color of spinel can vary depending on the specific location of its origin.
Why Choose Spinel?
Spinel offers several advantages over other gemstones:
Affordability: Compared to its more expensive counterparts like rubies and sapphires, spinel offers a comparable level of beauty at a more accessible price point.
Diversity: The wide range of stunning colors available allows you to find a spinel that perfectly complements your personal style and preference.
Durability: With its relatively high hardness, spinel is a suitable choice for everyday wear in jewelry, making it a long-lasting investment.
Exploring Spinel Jewelry:
From elegant necklaces and earrings to stunning rings and bracelets, spinel can be found in various jewelry designs to suit your taste. Whether you prefer a classic and timeless look or a bold and contemporary statement piece, spinel's versatility allows you to find the perfect piece that adds a touch of sparkle to your outfit.
Spinel: More Than Just a Ruby Lookalike:
While sometimes mistaken for other gemstones, spinel has earned its own place in the world of jewelry. With its captivating colors, rich history, and attractive features, spinel offers a unique and beautiful option for anyone seeking a stunning gemstone with a touch of history and affordability.
So next time you come across a dazzling piece of jewelry, don't be quick to judge! It might just be a spinel, waiting to be discovered and appreciated for its own unique beauty.