MetdiaGem - Putting Information In The Palm Of Your HandIntroducing MetdiaGem 1.2, the complete pocket gemology reference that puts gemology information at your fingertips. Designed for the graduate gemologist, jewelry professional, or gem connoisseur or collector alike, MetdiaGem is an easy to understand and easy to use application for your iPhone/iPod Touch (or iPad in Compatibility Mode) device that allows you to access all the information needed to accurately identify all widely accepted gem species/varieties. It includes, but is not limited to, the following:1) Detailed gem species information, including chemical formula, crystal system, specific gravity, hardness, toughness, dispersion, transparency, polish luster, fracture, fracture luster, cleavage, heat, chemical, and light reaction, ultrasonic, steam, and soap/water cleaning, and variety-by-species information with accompanying notes (where applicable),2) Detailed gem variety information, including refractive index, birefringence, optical, general size, species, color, other varieties typically confused with, separations, enhancement, and source information with accompanying notes (where applicable), and images for most varieties,3) Search capability with up to twenty-two search parameters and endless combinations,4) Jewelry metal melting temperature (Both Fahrenheit and Celsius) and specific gravity information, including common base metal and other materials melting information for comparison,5) A weight conversion calculator with conversion formulas that includes the following weight scales: carats, drams troy, grains, grams, kilograms, ounces, ounces troy, pennyweights, pounds, pounds troy, taels troy (Hong Kong), and tolas (India and Pakistan), and6) A glossary of commonly used gemology terms and definitions.Outside the application itself, the best feature is that it is self-contained: you do not need an active Wi-Fi or cellular data connection to access the application's content after the initial download (other than updates). This allows you to travel anywhere and still access pertinent gem information without being hampered by a lack of a Wi-Fi connection or cellular data service.You get all this for USD $4.99, approximately the cost of your favorite coffee drink at your local coffee house, with free updates as they come available. Please feel free to contact customer service at any time with any questions you have about MetdiaGem before, during, or after your purchase.