Buku Pintar Batu Permata is a free educational application created by UG Design for gemstone enthusiasts in Indonesia. It is a comprehensive guide to gemstones, their properties, and how to distinguish between genuine and fake stones. The app offers several features, including a daily lucky stone, calculators to determine the carat of a gemstone and which stone is suitable for your birth month, zodiac sign, and Chinese zodiac. It also includes a wealth of information on gemstones and articles on their history and significance. The app is entirely offline, making it accessible to anyone, anywhere, anytime.

Gemstone lovers will find this app to be a valuable resource for identifying and learning about gemstones. The app's intuitive interface makes it easy to navigate and find the information you need. Whether you're a beginner or a seasoned collector, Buku Pintar Batu Permata is an excellent tool to have in your pocket.