Are you wondering whether a diamond is real or fake? With smartphones becoming powerful tools, several apps can help you learn about diamonds, gemstones, and jewelry quality. While these apps can provide useful guidance, they cannot replace professional gemological testing.
In this guide, we list the best diamond testing and gem identification apps for Android and iPhone in 2026.
Diamond testing apps can help with education, visual checks, and gemstone information, but they cannot scientifically verify diamond authenticity. For accurate results, consult a certified jeweler or gemological laboratory.
Top 5 Best Diamond Testing Apps for Android and iOS
1. Gemetrix
Platform: Android, iOS
Price: Free
Gemetrix is a professional-grade gem analysis companion app designed to work with specialized inspection hardware like Jewellery Inspector or PL-Inspector. It helps identify synthetic and treated gemstones using UV light imaging.
Key Features
- Long-wave and short-wave UV imaging support
- Manual camera controls for ISO, focus, and exposure
- Compare LW and SW images with slider mode
- Save labeled gemstone images
Best For: Gem professionals and serious buyers using inspection devices.
2. Tell If The Diamond Is Real
Platform: Android
Price: Free
This educational app explains simple DIY methods to check whether a diamond might be genuine. It includes fog tests, water tests, and loupe inspection tips.
Key Features
- Step-by-step diamond testing guides
- Visual and physical test explanations
- Beginner-friendly interface
Best For: Beginners learning basic diamond authenticity checks.
3. Gem Selections (by Khanna Gems Pvt. Ltd.)
Platform: Android, iOS
Price: Free
Gem Selections is an informational and shopping app that provides detailed knowledge about diamonds, gemstones, jewelry, and rudraksha. It is developed by a well-known jewelry brand and focuses on education and product selection.
Key Features
- Educational gem encyclopedia
- Jewelry customization tools
- Gemstone recommendations
- Product catalog browsing
Best For: Buyers researching gemstones and jewelry before purchase.
4. GIA 4Cs
Platform: Android, iOS
Price: Free
Developed by the Gemological Institute of America (GIA), this is one of the most trusted educational apps for diamonds. It teaches users about Cut, Color, Clarity, and Carat weight, which are the global standards for diamond grading.
Key Features
- Interactive diamond grading tutorials
- GIA color and clarity scale explanations
- Diamond grading report database access
- Educational videos and tools
Best For: Learning how diamonds are professionally graded.
5. Diamond Identifier & Tester Guide (Educational Apps)
Platform: Android, iOS
Price: Free
Several educational apps and guides exist that explain how to differentiate real diamonds from simulants like cubic zirconia or moissanite using visual and physical tests.
Common Features
- Diamond vs fake comparison charts
- Refractivity and hardness explanations
- Visual inspection guides
Best For: Learning diamond basics and spotting obvious fakes.
Bonus: Simple DIY Diamond Authenticity Tests
These tests are not scientific, but they can help detect obvious fakes:
1. Fog Test
Breathe on the diamond. Real diamonds disperse heat quickly, so fog disappears instantly.
2. Water Test
Drop the stone in water. Real diamonds sink quickly due to high density.
3. Loupe Test
Use a jeweler’s loupe to check for imperfections. Real diamonds usually have inclusions.
4. UV Light Test
Some diamonds glow blue under UV light, but not all genuine diamonds fluoresce.
5. Line Test
Place the diamond over a drawn line. If you can see the line clearly, it may be fake.
Are Diamond Testing Apps Reliable?
Short answer: No app can confirm a real diamond.
Apps can help with:
- Learning diamond grading
- Visual inspection guidance
- Gemstone education
- Buying decision research
But only professional tools like refractometers, conductivity testers, and lab certification (GIA, IGI, HRD) can verify authenticity.
Final Verdict
Diamond testing apps are useful educational tools, but they should never be the sole method to verify a diamond. If you are buying expensive jewelry, always request a certified grading report or consult a professional gemologist.
Frequently Asked Questions (FAQs)
Can apps really detect real diamonds?
No. Apps can only provide guidance. Professional testing is required.
Which is the best diamond education app?
GIA 4Cs is the most trusted educational app for diamonds.
Are DIY diamond tests accurate?
They can detect obvious fakes but are not reliable for expensive stones.