What To Know
- The density of Moldavite can be a useful indicator of its authenticity, as imitations may have a lower density and feel lighter in the hand.
- The refractive index of a gemstone is a measure of how much light bends when passing through it.
- If a gemstone is claimed to be Moldavite but is not from the Czech Republic, it’s highly likely to be an imitation.
Moldavite, a rare and captivating gemstone, is believed to have originated from a meteorite impact that occurred approximately 15 million years ago. This unique gem is renowned for its distinct olive green color, intriguing surface textures, and purported metaphysical properties. If you’re interested in acquiring or authenticating Moldavite, it’s essential to understand the key characteristics that set it apart from imitations. This comprehensive guide will provide you with the knowledge and techniques to accurately identify Moldavite.
1. Color and Clarity
Moldavite’s distinctive olive green hue is one of its most recognizable features. The color can range from a light, almost yellowish green to a deep, bottle green. It’s worth noting that the color may vary depending on the lighting conditions, appearing more vivid in natural light. Additionally, Moldavite typically exhibits a high level of clarity, allowing light to pass through it easily.
2. Surface Texture
The surface of Moldavite is often characterized by unique textures and patterns. These textures are a result of the gem’s formation during the meteorite impact, which subjected it to intense heat and pressure. Common surface features include pits, grooves, and flow lines, which can vary in size and shape. Some Moldavite specimens may also exhibit a glassy or conchoidal fracture, creating sharp, irregular edges.
3. Weight and Density
Moldavite is a relatively dense material, with a specific gravity ranging from 2.3 to 2.5. This means that it feels heavier than it looks, especially when compared to other gemstones of similar size. The density of Moldavite can be a useful indicator of its authenticity, as imitations may have a lower density and feel lighter in the hand.
4. Refractive Index
The refractive index of a gemstone is a measure of how much light bends when passing through it. Moldavite has a refractive index of approximately 1.48 to 1.51. This value can be measured using a refractometer, a specialized instrument used to determine the refractive index of gemstones. The refractive index of Moldavite can help distinguish it from other green gemstones that may have similar appearances.
5. Fluorescence and Phosphorescence
Moldavite exhibits fluorescence and phosphorescence, which are unique optical properties. Fluorescence refers to the emission of light by a gemstone when exposed to ultraviolet (UV) light. Moldavite typically fluoresces a bright green color under UV light. Phosphorescence, on the other hand, is the ability of a gemstone to continue emitting light after the UV light source has been removed. Moldavite may exhibit phosphorescence for a short period after being exposed to UV light.
6. Chemical Composition
The chemical composition of Moldavite is another important factor in its identification. Moldavite is primarily composed of silicon dioxide (SiO2), with minor amounts of aluminum oxide (Al2O3), magnesium oxide (MgO), and calcium oxide (CaO). The presence of these elements can be detected using various analytical techniques, such as X-ray fluorescence (XRF) or inductively coupled plasma mass spectrometry (ICP-MS).
7. Geographic Origin
Moldavite is exclusively found in the Czech Republic, specifically in the area known as the Moldau River Valley. This region is where the meteorite impact is believed to have occurred, and it’s the only known source of Moldavite in the world. If a gemstone is claimed to be Moldavite but is not from the Czech Republic, it’s highly likely to be an imitation.
The Bottom Line: Ensuring Authenticity
Identifying Moldavite accurately requires a combination of careful observation, specialized testing, and knowledge of its unique characteristics. By examining the color, clarity, surface texture, weight, density, refractive index, fluorescence, phosphorescence, chemical composition, and geographic origin, you can increase your confidence in determining the authenticity of Moldavite. If you’re unsure about the authenticity of a particular gemstone, it’s always advisable to consult with a qualified gemologist or jeweler for expert evaluation.
What People Want to Know
1. Q: Can Moldavite be found in other colors besides green?
A: No, Moldavite is exclusively found in olive green color variations. Any other colors are likely to be imitations.
2. Q: Is Moldavite radioactive?
A: No, Moldavite is not radioactive and is safe to wear or handle.
3. Q: Can Moldavite be used in jewelry?
A: Yes, Moldavite is commonly used in jewelry, such as necklaces, pendants, and rings. However, due to its rarity and value, it’s often used in smaller sizes or combined with other gemstones.
4. Q: How can I care for Moldavite jewelry?
A: To maintain the beauty and integrity of Moldavite jewelry, it’s recommended to avoid harsh chemicals, extreme temperatures, and excessive physical stress. Clean the jewelry gently with a soft cloth and warm, soapy water.
5. Q: Where can I find reliable sources to purchase Moldavite?
A: Reputable gem dealers, jewelry stores, and online retailers that specialize in authentic gemstones are reliable sources for purchasing Moldavite. Always inquire about the origin and authenticity of the gemstone before making a purchase.
