Tanzanite, discovered in 1967 in the Merelani Hills of Tanzania, is a relatively new gemstone that has quickly become popular due to its striking blue to violet color. This unique stone is a variety of the mineral zoisite and is named after its country of origin, Tanzania. Tanzanite is celebrated not only for its vibrant color but also for its trichroism, which means it can display different colors when viewed from different angles. Typically, these colors are blue, violet, and red.
The beauty of tanzanite has led to its use in various jewelry pieces, including rings. However, questions arise about the suitability of this gem for everyday wear, particularly concerning its hardness and durability. In this article, we will explore whether tanzanite is too soft for a ring and provide a detailed analysis of the factors you should consider if you’re thinking about purchasing or designing a tanzanite ring.
Understanding Hardness and Durability
Hardness on the Mohs Scale
To determine whether a gemstone is suitable for a particular piece of jewelry, one must understand the concept of hardness. The hardness of a gemstone is measured using the Mohs scale, which ranges from 1 (softest) to 10 (hardest). On this scale, diamonds are the hardest substance at 10, while talc, a very soft material, is at 1. Tanzanite has a hardness rating of 6.5 to 7 on the Mohs scale, placing it between quartz (7) and orthoclase feldspar (6).
Durability Beyond Hardness
While hardness is an important factor, it’s not the only measure of a gemstone’s durability. Other factors include toughness, which refers to how resistant a stone is to breaking or chipping, and stability, which concerns how well a stone withstands exposure to light, heat, chemicals, and humidity. Tanzanite is moderately tough, meaning it can be prone to chipping or cracking under certain conditions, especially along its cleavage planes where the atomic bonds are weaker.
Factors Affecting Tanzanite’s Suitability for Rings
Wear and Tear
Rings, especially those worn on the fingers, are subject to more wear and tear than other types of jewelry. They come into contact with surfaces, objects, and even our own skin, which can lead to scratches, chips, and other damage over time. Because tanzanite is softer than some other gemstones used in rings, such as sapphire or diamond, it may be more susceptible to these issues.
Setting Type
The type of setting used for a tanzanite ring can significantly impact its durability. A secure, protective setting, such as a bezel or channel setting, can help shield the stone from direct impacts. On the other hand, prong settings, while allowing for more visibility of the gemstone, can leave the edges of the stone exposed and vulnerable to damage. For tanzanite, it’s often recommended to choose a setting that provides extra protection, especially if the ring will be worn daily.
Care and Maintenance
Proper care and maintenance are crucial for preserving the beauty and longevity of any gemstone, including tanzanite. Regular cleaning, avoiding harsh chemicals, and storing the ring in a soft pouch or jewelry box can help prevent damage. Additionally, it’s advisable to have the ring professionally inspected and cleaned periodically to ensure that the setting remains secure and the stone is in good condition.
Lifestyle Considerations
Your lifestyle plays a significant role in determining whether tanzanite is a suitable choice for a ring. If you lead an active lifestyle or work in an environment where your hands are frequently exposed to potential hazards, a tanzanite ring may not be the best option. Conversely, if you have a more sedentary lifestyle or plan to wear the ring primarily for special occasions, tanzanite can be a beautiful and appropriate choice.
Comparing Tanzanite to Other Gemstones
Diamonds
Diamonds, with their hardness rating of 10 on the Mohs scale, are the most durable gemstones for rings. They are resistant to scratching and can withstand daily wear and tear without significant damage. However, diamonds are also more expensive than tanzanite, and their market value can fluctuate based on supply and demand.
Sapphires
Sapphires, with a hardness rating of 9 on the Mohs scale, are another popular choice for rings. They are highly durable and come in a range of colors, including blue, which can be similar to tanzanite. Sapphires are also more resistant to chipping and cracking than tanzanite, making them a better option for everyday wear. However, sapphires are generally more expensive than tanzanite, and their availability can be limited depending on the color and quality.
Topaz
Topaz, with a hardness rating of 8 on the Mohs scale, is another gemstone that is often used in rings. It comes in a variety of colors, including blue, and is more durable than tanzanite. However, topaz can still be prone to chipping along its cleavage planes, so it requires careful handling. Topaz is generally less expensive than tanzanite, making it a more budget-friendly option for those looking for a blue gemstone.
Quartz
Quartz, with a hardness rating of 7 on the Mohs scale, is a common gemstone used in rings. It is durable and available in many colors, including blue varieties like amethyst and blue quartz. Quartz is also more affordable than tanzanite and is less likely to chip or crack. However, it may not have the same depth of color or brilliance as tanzanite, which can be a consideration for some buyers.
Enhancing Tanzanite’s Durability
Heat Treatment
Many tanzanites on the market today are heat-treated to enhance their color and improve their durability. Heat treatment can make the stone more stable and less prone to color fading over time. While heat treatment does not increase the hardness of tanzanite, it can help to stabilize the stone and make it more resistant to environmental factors.
Protective Coatings
Some jewelers offer protective coatings for tanzanite to enhance its durability. These coatings can help to reduce the risk of scratches and chips, but they are not a permanent solution and may need to be reapplied over time. It’s important to note that not all protective coatings are created equal, so it’s essential to choose a reputable jeweler who uses high-quality materials.
Custom Design
Working with a skilled jeweler to create a custom tanzanite ring can also help to enhance its durability. By selecting a design that takes into account the stone’s natural characteristics, such as its cleavage planes and overall shape, you can create a ring that is both beautiful and functional. Custom designs can also incorporate additional features, such as reinforced prongs or protective bezels, to further protect the stone.
Conclusion
In conclusion, while tanzanite is not the hardest gemstone available for rings, it can still be a beautiful and suitable choice with proper care and consideration. Its moderate hardness, combined with its stunning color and unique properties, makes it a desirable option for those who appreciate fine jewelry. However, it’s important to be aware of the potential risks associated with wearing tanzanite in a ring, especially if you plan to wear it daily or engage in activities that could expose it to damage.
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