Gemology Notes
Gemology data & tools
$2.99 · Designed for iPad. Not verified for macOS.
Systematic Gemology Notes
An offline reference app dedicated to gemology learning, covering the fundamental properties, crystal structures, and systematic classification of common gemstones.
KEY FEATURES
• Gemstone Browser — Reference material organized by crystal system and gemstone species
• 3D Crystal Models — Interactive displays of each gemstone's crystal structure; rotate and zoom to examine every angle
• Detailed Notes — Systematic knowledge covering physical properties, optical characteristics, and key identification points
• Fully Offline — No internet connection required; study anywhere, anytime
Ideal for gemology students, professional gemologists and appraisers, jewelers, and collectors.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
What's New in 2.1.0
• New identify tool: enter refractive index, birefringence, specific gravity, pleochroism, absorption spectra and other observations to narrow down candidates from 49 common gemstones.
• Key physical properties re-verified against standard references.
• Synthetic diamond and imitation identification added to the diamond note.
• Improved reading smoothness and stability.
The developer, 际 郭, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- 际 郭
- Size
- 25.8 MB
- Category
- Education
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English and Simplified Chinese
- Age Rating
4+
- 4+
- Copyright
- © 2026 JI GUO

