Manage your weight. Strength training can help you manage or lose weight, and it can increase your metabolism to help you burn more calories. Enhance your quality of life. Strength training may enhance your quality of life and improve your ability to do everyday activities.
Price: With the exception of the small pieces in the lower right photo (typically $5 to $15 each), most specimens are priced in the $40 to $150 range. Larger specimens (not shown) are costly and are a few hundred dollars. The malachite ashtray (lower left photo) sold for $120.
Sphene can vary widely in price as a cut gemstone. Prices (Feb 2011) can range from $10-$100 per carat for small stones, but larger sphenes are less common and it's possible for a sphene over 10 carats, with strong brilliance and fire, to reach $400 per carat. $200 per carat is not that uncommon.