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Gemology Notes
际 郭 · Education · 🇺🇸 United States listing
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Top paid · Education · 🇨🇳 CN
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Chart positions
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Today
What's new v2.1.0 · 1 week ago
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.
Information
- Provider
- 际 郭
- Size
- 25 MB
- Category
- Education, Reference
- Requires
- iOS 17.0+
- Languages
- 2 · EN, ZH
- Age
- 4+
- Price
- $2.99
- Released
- Aug 18, 2026
Ratings by country
Reading the 22 big storefronts first, then the other 102…