GemEx ION vs RDI Diamonds
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
GemEx ION
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Application for using seeing diamond table engravings.
RDI Diamonds
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RDI Diamonds® was founded by CEO Michael Indelicato as Rochester Diamonds Incorporated, a small jewelry business that Mr. Indelicato ran from his mother’s basement in the late 1980s. The company was a true family business, with both Michael and his GIA Graduate Gemologist sister, Sara Lajuett, working to build a specialty brand that focused solely on quality diamonds and true customer appreciation and service. Shortened to the name RDI Diamonds® in the early ‘90s, the company steadily flourished into an international leader among wholesale diamond distributors, maintaining double-digit growth for over 30 years. Thousands of diamonds? That’s just the beginning. We offer a wide range of services and support to help you succeed. From our flexible memo options to our generous stock options and cost-efficient shipping, our goal is to provide the highest quality of both care and diamonds to our clients. 8,000+ Diamonds in Inventory Simple Stock Programs Highest Certification Standards Key Features: • Simple Stock Programs. • Highest Certification Standards. • Natural Diamond: We have 5000+ exclusive natural diamond inventory. • Lab Grown: We have 1000+ exclusive lab grown diamond inventory. • Search: Our search tool is very convenient and advance, put in your criteria and The search results are available. • Communication: Here for Your Calls. • Live Inventory: Geographical barrier hindering your buying experience? We’ve got it covered by featuring Live Inventory 24x7.
Screenshots
Verdict
The clearest difference is update cadence: RDI Diamonds at every 3 weeks against GemEx ION's every 5 months. RDI Diamonds also leads on iOS requirement (13.0 vs 15.6). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
GemEx ION ships an update every 5 months, RDI Diamonds every 3 weeks. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.
| Parameter | GemEx ION | RDI Diamonds |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 5 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 13.0 — better |
| Further details — not scored | ||
| Size | 19 MB | 16 MB |
| Age rating | 4+ | 17+ |
| Developer | GemEx Systems | Braintree Products Inc. |
In-app purchases
GemEx ION
No in-app purchases
RDI Diamonds
No in-app purchases








