Comparison

iDiamonds vs DiamondMaster

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

iDiamonds

This app provides diamond professionals with quick access to Rapaport diamond prices. It features tools for calculating prices, downloading certificates, and generating reports, all without intrusive ads.

Highlights
  • Access Rapaport diamond prices
  • Color, clarity, shape, size picker
  • One-click GIA/HRD/IGI certificate download
  • Auction calculator with multi-tier support
  • Carat and percentage input for price calculation
  • Report and invoice generation
  • Currency converter
Features
Read full description

Best App for Diamond Professionals Today! Top 20 Paid Application! Top 20 Grossing Application! Always Cheaper, Better, Faster!!! And now with more features! iDiamonds is a software for jewelers and diamond professionals that provides an easy access to diamond prices published by Rapaport Diamond Report. Features: - New & innovative Design! - Color, clarity, shape, and size picker for quick access to list price. -HOT: GIA/HRD/IGI Once Click CERT DOWNLOAD. It Converts PDF and saves it to photos folder as image. -HOT: Auction Calculator. Supports 1,2, or 3 tiers. - Carats and percent input boxes for easy calculation of price per carat and total price. - easy to use, fast, and increases productivity. - Anchor Control: Simply press which parameters you would like to remain constant, and iDiamonds will do the rest. - Editable Total price & PPC fields to calculate discount level. - Best and average price from Rapport database to see where you stand compared to the market - Currency Converter - Report and invoice generation: - Create diamond reports to see the total price, average ppc, average percentage, and total carats - Checkbox to quickly add or remove stones from the totals' calculation - Ability to save reports, rename the files, or delete old files. - Reports can be used in any currency, with different exchange rates (one currency for report). - Ability to email a report using in app-email. You will not leave the app as other applications do. - Rapaport and iDiamonds News - Deal of the Day RSS added. Find hot deals from top diamond manufacturers/wholesalers. - Ability to download new reports from Rapaport and stay up-to-date with diamond prices (One-touch synchronization). - AUCTION MODE! Choose the auction currency, set up the desired exchange rate, set up the anchor control to total price. The segment control will change and will allow you to increase the total price together with the Auctioneer. - Ability to send emails of links, article, reports, and feedback WITHOUT leaving the app. - NO ANNOYING POPUP ADS. Here at iDiamonds Mobile we understand that you need this application for business and that you do not want to see annoying popup ads in your paid app. Therefore, we strategically decided to be the only iPhone App with the Rapaport list price that commits not to put any popup ads in our app. - Fast loading time: 3.5-4 seconds loading time! - Shapes wheel contains 31 shapes (should be used for the best and average price of a specific shape and when adding a stone to an invoice) - Use both the 5ct list and the 10ct list for stones over 10ct from the Calc screen, without the need to change tabs. When you enter carat weight over 10 carat in the Carat Weight Textfield, the wheel will jump to the 5ct List. If you still want to see the price with 10ct list, just press on the 10ct section on the wheel. Note: you can disable this feature in the "Settings Bundle". ***Important Notice: This application requires Rapaport username and password. In-App Purchase Information - Rapaport Diamond Prices Calculator - Price Sheet Published Weekly and can be updated any day 24/7 - Cost of subscription to use all features of the App (9.99 per month) - Payment will be charged to iTunes Account at confirmation of purchase - Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period - Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal - Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase - No cancellation of the current subscription is allowed during active subscription period - Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication. Terms of Use: https://bit.ly/2ULRpUM Privacy Policy: https://bit.ly/2UJEumi

About

DiamondMaster

This app provides wholesale reference values for diamonds, allowing professionals to compare classifications and adjust pricing based on various exchange units. Explore the '8 C's' and 27 different cost units, including currencies, precious metals, and cryptocurrencies, to understand diamond valuation across time and economic shifts.

Highlights
  • Explore the '8 C's' of diamonds
  • Compare values across 27 cost units
  • Analyze natural and lab-grown diamonds
  • Track 1-year and 5-year value changes
  • Adjust pricing with Global Value Adjuster
  • Supports 12 currencies, precious metals, and crypto
Features
Read full description

ONE DIAMOND. TWENTY-SEVEN WAYS TO MEASURE ITS VALUE. What changes when you measure a diamond in gold instead of dollars? Or Bitcoin instead of Swiss francs? DiamondMaster helps diamond professionals, gemologists, appraisers, buyers and traders explore wholesale reference values for Mined-Natural and Grown-Created diamonds. Compare classifications, adjust your pricing basis, and see how a different exchange unit changes the picture. Developed by Wayne D. Prentice, Graduate Gemologist and former GIA Resident Gemology Instructor, DiamondMaster brings gemological knowledge and the BrightList wholesale reference guide together on iPhone and iPad. EXPLORE THE 8 C'S Cut Shape, Carat, Color, Clarity, Cut Grade, Cost, Change in Value and Creation—the diamond's natural or laboratory-grown origin. • 10 shapes: Round, Pear, Emerald, Princess, Marquise, Oval, Radiant, Cushion, Trilliant and Heart. • Shape-specific carat selections, with 46 categories for Round, from 0.01 ct through the 10–10.99 ct range. • 10 color grades, D–M, and 10 clarity grades, IF–I-3. • Five cut-grade selections, Excellent through Poor. • Separate natural and lab-grown reference datasets. • Per-carat and total reference values, dimension guidelines, grading descriptions and shape-specific gemological information. 27 COST UNITS WITH BRIGHTLIST Keep the diamond selection. Change the measuring stick. 12 currencies: USD, EUR, JPY, CHF, CAD, GBP, AUD, BRL, RUB, INR, CNY and ZAR. 2 basket references: • XDR: the IMF's Special Drawing Right. • XUNT: DiamondMaster's calculated reference for the proposed gold-and-currency BRICS+ "THE UNIT" basket. 6 precious-metal units: • Gold (XAU), platinum (XPT) and silver (XAG), each by troy ounce. • Gold by gram: Denari (XDEN). • Gold by 100 grams: Centum (XCEN). • Gold by kilogram: Milia (XMIL). 7 crypto assets: Bitcoin (BTC), Ethereum (ETH), Litecoin (LTC), Cardano (ADA), Solana (SOL), PAX Gold (PAXG) and Zcash (ZEC). COMPARE ACROSS TIME Natural-diamond screens show 1-year and 5-year percentage changes in your selected Cost unit. By liberating diamond valuation from the traditional US Dollar peg, the 'Bright List' normalizes a diamond's intrinsic scarcity, extraction costs, and luxury premium across 27 distinct economic units. Whether you are tracking a gem by its 4 C’s or analyzing macro liquidity shifts, our advanced dual-period tracking over 1- and 5-year intervals reveals the true reality of wealth: letting you see instantly whether your diamond is genuinely appreciating, or if your chosen currency is losing its purchasing power. MAKE THE LIST YOUR OWN Use the Global Value Adjuster to apply a discount or premium across diamond calculations. Explore your preferred buying or selling basis, or return to LIST with a 1.00 multiplier. DEMO AND SUBSCRIBER ACCESS Without an active subscription, explore the calculators using older demonstration data and a smaller Cost-unit selection. A BrightList subscription unlocks subscriber diamond reference datasets and all 27 Cost units. Exchange data refreshes on a daily cycle when connectivity and source data allow. Values may use earlier saved or supplied data; this is not a continuous trading feed. SUBSCRIPTIONS Choose from 7-day, 1-month, 6-month or 1-year auto-renewing plans. Current prices and terms appear in the app before purchase. Payment is charged to your Apple Account at confirmation. Subscriptions renew automatically unless canceled at least 24 hours before the current period ends. Renewal is charged within the preceding 24 hours. Manage or cancel in Apple Account settings. Use Restore Subscription to check existing access. Reference values are not individual appraisals, purchase offers or guaranteed resale prices. DiamondMaster does not execute trades. Privacy Policy: https://www.diamondmaster.net/privacy_policy.php Terms of Use: https://www.diamondmaster.net/terms_of_use.php

Screenshots

iDiamonds3 screens
DiamondMaster4 screens

Verdict

The call

The clearest difference is update cadence: DiamondMaster at every 5 weeks against iDiamonds's every 4 months. DiamondMaster also leads on review sentiment (75% vs 62%). iDiamonds's advantage is iOS requirement (8.0 vs 16.4). On price, ads, in-app purchases and monetization model 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. iDiamonds sells 1 in-app purchase, starting at $9.99 per month and DiamondMaster sells 4 in-app purchases, starting at $6.99 per 7 days. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

iDiamonds ships an update every 4 months, DiamondMaster every 5 weeks. Both last shipped on November 6, 2026.

Scorecard3 real differences · 7 level
iDiamonds versus DiamondMaster: the parameters behind the verdict, then further details
ParameteriDiamondsDiamondMaster
PriceFreeFree
Rating5.0 (1 ratings) — better—
Positive reviews61.9% of reviews75.0% of reviews — better
Number of ratings1 — better—
Update frequencyEvery 4 monthsEvery 5 weeks — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPodiPhone, iPad
Requires iOS8.0 — better16.4
Further details — not scored
Size13 MB23 MB
Age rating4+4+
DeveloperRoei Kashi ProductionWayne D. Prentice, G.G.

Customer experience

iDiamonds

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews21 reviews
Positive61.9%
Neutral0.0%
Negative38.1%

DiamondMaster

Written reviews8 reviews
Positive75.0%
Neutral0.0%
Negative25.0%

In-app purchases

1 purchases

iDiamonds

Subscriptions1
  • iDiamonds Monthly Subscription7 Days trial$9.991 Month
4 purchases

DiamondMaster

Subscriptions4
  • Wholesale "Bright List" 1 wk.$6.997 Days
  • Wholesale "Bright List" 1 mo.$24.991 Month
  • Wholesale "Bright List" 6 mo.$109.996 Months
Show 1 more
  • Wholesale "Bright List" 1 yr.$199.991 Year

Questions

Is iDiamonds free?
iDiamonds is free to download, with in-app purchases available.
Is DiamondMaster free?
DiamondMaster is free to download, with in-app purchases available.
Do iDiamonds or DiamondMaster have ads?
Neither iDiamonds nor DiamondMaster shows ads.
Which is updated more often, iDiamonds or DiamondMaster?
iDiamonds ships an update every 4 months, and DiamondMaster every 5 weeks. Most recently, iDiamonds was updated on November 6, 2026 and DiamondMaster on November 6, 2026.

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