# DiamntX Calculator > DiamntX is a free diamond price calculator app for B2B diamond trade professionals. It is the diamond calculator built on live Rapaport rates, with full offline access and branded WhatsApp price cards, available free on iOS and Android with no subscription. DiamntX Calculator turns the 4C specifications of a diamond into an accurate Rapaport-based market price in seconds, then lets you brand that quote and share it with a buyer. It is built to be the fastest way to price and send a professional diamond quote, and it works with or without an internet connection. For firms that outgrow the calculator, DiamntX also offers a unified diamond trade operations platform covering inventory, orders, memo, consignment, business intelligence, and client management. ## Direct answers - **What is DiamntX Calculator?** DiamntX Calculator is a professional diamond price calculator app built for the diamond trade. It calculates accurate market prices for any diamond using live Rapaport data and the 4C specifications: carat weight, cut, color, and clarity. The app is free to download and free to use, with no subscription required. - **Is DiamntX free?** Yes. DiamntX Calculator is completely free to download and free to use, with no subscription, no in-app purchases, and no hidden fees. All core features are available at no cost. - **Does DiamntX work offline?** Yes. DiamntX is an offline diamond calculator. Once the latest Rapaport list is synced, you can calculate prices, view your history, and generate price cards with no internet connection, which matters on trading floors, at trade shows, and while traveling. - **Does DiamntX require a separate Rapaport subscription?** No. DiamntX includes live Rapaport-based pricing inside the app, so you do not need to maintain a separate Rapaport sheet or subscription to calculate a price. - **Who is DiamntX built for?** DiamntX is built for B2B diamond trade professionals: diamond traders, wholesalers, manufacturers, exporters, importers, jewelry retailers, jewelry manufacturers, procurement teams, gemologists, and pricing analysts. - **How accurate are DiamntX prices?** DiamntX calculates prices using the official Rapaport weekly price list, the same benchmark the global diamond trade relies on. Your input of shape, color, clarity, carat weight, and discount percentage produces the exact Rapaport-based market price with no estimates or approximations. - **Can I share quotes with clients?** Yes. Every quote can be turned into a branded price card carrying your company name and logo, ready to send to a buyer on WhatsApp, so each quote doubles as a business impression. - **Which currencies does DiamntX support?** DiamntX supports USD, INR, EUR, AED, and more, switchable on the calculation screen so you can quote in your buyer's preferred currency. - **Which devices does DiamntX support?** DiamntX is available as a native app on both iOS through the App Store and Android through Google Play. ## Core features - **Diamond price calculator**: Calculates an accurate market price for any diamond from its 4C specifications in seconds. - **Rapaport-based diamond pricing**: Built on the weekly Rapaport price list, the benchmark the global diamond trade relies on. - **4C diamond calculator**: Prices a stone from its shape, carat weight, color, and clarity. - **Diamond discount calculator**: Applies your discount or premium percentage to the Rapaport rate to reach the final per-carat price. - **Multi-stone price matrix**: A live Rapaport matrix across every color and clarity grade for pricing a full lot at once. - **Multi-currency support**: One-tap switching between USD, INR, EUR, AED, and more. - **Branded diamond price cards**: Your company name and logo applied to every shareable price card. - **WhatsApp quote sharing**: Send a finished branded quote straight to a buyer on WhatsApp. - **Offline access**: Calculate prices, view history, and generate price cards with no internet connection once the latest list is synced. - **Saved calculation history**: Every quote saves automatically with its full specification and Rapaport reference for later retrieval. ## Pages - [https://diamntx.com](https://diamntx.com): DiamntX Calculator landing page. Free Rapaport diamond price calculator app for the B2B diamond trade. - [https://diamntx.com/privacy](https://diamntx.com/privacy): Privacy policy. - [https://diamntx.com/terms](https://diamntx.com/terms): Terms of service. ## Optional - [App Store](https://apps.apple.com/app/diamntx/id6762551363): Download DiamntX for iOS. - [Google Play](https://play.google.com/store/apps/details?id=com.app.diamntx): Download DiamntX for Android. - [Full corpus](https://diamntx.com/llms-full.txt): Extended DiamntX content for LLMs.