Green Sphene, also known as Green Titanite, is a variety of the mineral titanite and is characterized by its vibrant green color. Here's some information about it:
1. Appearance: Green Sphene typically exhibits shades of green ranging from light to dark, including lime green, olive green, and forest green. It has a high refractive index, which gives it excellent brilliance and dispersion.
2. Mineral Composition: Green Sphene shares the same chemical composition as other varieties of titanite, with the formula CaTiSiO5. It belongs to the group of nesosilicate minerals and has a hardness of 5 to 5.5 on the Mohs scale.
3. Origin: Green Sphene is found in various locations around the world, including Brazil, Pakistan, Russia, and Madagascar. Madagascar is particularly known for producing high-quality Green Sphene gemstones.
4. Brilliance and Fire: Similar to Golden Sphene, Green Sphene exhibits exceptional dispersion, resulting in intense fire and play of colors. When light enters the gemstone, it splits into a spectrum of colors, producing flashes of green, yellow, and red.
5. Rarity and Value: Green Sphene is considered a relatively rare gemstone, especially in larger sizes and higher quality. Its value is influenced by factors such as color saturation, clarity, size, and overall brilliance. Fine specimens of Green Sphene can be highly sought after by gemstone collectors.
6. Durability and Care: While Green Sphene is relatively hard, it is also a brittle gemstone. It is important to handle it with care to avoid accidental impacts or scratches. As with any gemstone, it is recommended to store Green Sphene separately from other gemstones to prevent potential damage.
When purchasing Green Sphene or any gemstone, it is advisable to acquire them from reputable sources and request certification from well-known gemological laboratories to ensure their authenticity and quality.