Shopping for your first diamond can feel overwhelming. You want an engagement ring or loose stone that’s just right, but there are thousands of gems and technical details to consider. Tools like StoneAlgo and RockHer’s own ROSI are designed to make this journey easier. StoneAlgo positions itself as an extensive online diamond marketplace with smart filters and price tools that scan millions of stones from top retailers. ROSI (RockHer’s AI digital gemologist) acts like a personal assistant, using advanced algorithms and artificial intelligence to guide you to the best diamond for your needs.
In this guide, we present a neutral comparison of the two services. We’ll highlight StoneAlgo’s factual features alongside an in-depth look at ROSI’s capabilities – especially how our AI stack (using OpenAI and Grok) and full-service model work together. Our goal is to give first-time buyers, engagement ring shoppers, lab-grown enthusiasts, and loose diamond seekers a clear, friendly roadmap. You’ll see how each tool works and why ROSI’s approach – from personalized AI recommendations to custom ring crafting – might be the perfect fit for your search.
The table below shows key differences and similarities between StoneAlgo and ROSI (RockHer’s offering). Each platform aims to help you find great diamonds, but their tools, technology, and services vary. Review it to see which features matter most for your diamond buying journey.
|
Feature |
StoneAlgo |
ROSI (RockHer) |
|---|---|---|
|
Marketplace |
Claims to be a large diamond marketplace, aggregating 2M+ listings from online retailers. |
An AI-powered diamond assistant built by RockHer, searching our curated inventory and global suppliers. |
|
Search & Tools |
Offers “Smart Search” with filters for shape, 4Cs, etc. Includes a Price Calculator, Price Index charts, and a side-by-side Diamond Comparison tool (up to 4 stones). |
Uses a proprietary algorithm enhanced by AI (including OpenAI’s GPT and Grok) to match diamonds to your criteria. It learns your budget and priorities and instantly refines results via natural-language chat or queries. |
|
Lab-Grown Support |
Includes lab-grown diamonds and even has a calculator for natural vs. lab-grown pricing. |
Fully supports lab-grown options. ROSI will include lab-grown stones in its recommendations if you prefer, applying the same expert screening as for natural diamonds. |
|
Custom Ring Design |
Provides a 3D Ring Builder that lets you pair a chosen diamond with setting designs (via partner jewelers). |
Offers full custom ring design service. Choose from hundreds of settings or create a bespoke design, then our Los Angeles workshop handcrafts the ring to fit your diamond perfectly. |
|
Value & Pricing |
Emphasizes finding under-priced, high-quality stones. Gives fair price estimates and alerts for deals to help save time and money. |
Focuses on best overall value: ROSI suggests high-quality diamonds within your budget and goals, avoiding overpaying. All picks are vetted by our gemologists for quality and value. |
|
Expert Guidance |
Self-service experience: tools and FAQs guide you, but there’s no live personal assistance on StoneAlgo’s site. |
Acts like a personal gemologist: automated AI guidance plus access to RockHer’s diamond experts. You can refine ROSI’s suggestions through chat or call with a real specialist at any time. |
|
Access & Support |
Web-based platform (desktop/mobile). You create an account to save favorites. No dedicated customer chat or phone support for diamond advice. |
Omnichannel support: ROSI is available via our website 24/7, plus RockHer offers live chat, phone and email assistance. We’re here to answer questions throughout your entire journey. |
|
Service Model |
Marketplace/Affiliate model: StoneAlgo directs you to partner jewelers to complete purchase. StoneAlgo itself does not build rings or handle delivery. |
End-to-end service: RockHer manages everything. We source the diamond, design and craft the ring, handle secure delivery, and provide a lifetime warranty. You get one-stop shopping from start to finish. |
Each of these features shows StoneAlgo’s strengths as a comprehensive search platform and ROSI’s strengths as a personalized service. Next, we’ll walk through exactly how ROSI works step-by-step, so you can see how this AI-driven process plays out in practice.
Using ROSI is like having a digital diamond expert on hand. Here’s how the experience unfolds:
Tell ROSI what you need. You start by telling us your basics: preferred diamond shape (round, princess, oval, etc.), carat (size), and budget. You can do this on our website through a simple chat interface or by phone/email with our consultants. ROSI may ask a few more questions about your priorities – for example, whether size or color is more important to you. Thanks to integration with advanced language AI (OpenAI’s models and Grok), this conversation feels natural, just like talking with a jeweler.
ROSI searches the inventory. Once it has your criteria, ROSI’s proprietary algorithm goes to work. It dynamically analyzes our network of diamonds (including hundreds of thousands from global suppliers) and applies sophisticated AI logic. ROSI considers dozens of factors – not just the 4Cs (cut, color, clarity, carat) but also brightness, symmetry, light performance, and eye-cleanliness. It crunches through millions of data points in seconds, finding the stones that best match your needs. Behind the scenes, our software runs all these calculations constantly to stay up-to-date with market prices and stock.
Get personalized recommendations. In moments, ROSI presents you with a shortlist of diamond candidates tailored to your request. Each recommended diamond comes with clear information: images, 4C grades, price, and ROSI’s notes on why it’s a great fit. If something isn’t quite right, no problem – you can ask follow-up questions. For example, you might say “show me a G-color instead” or “I want a slightly smaller carat.” ROSI’s AI immediately re-runs its analysis with the new filters and updates its list. This interactive back-and-forth ensures the results feel hand-picked for you.
Select your diamond and design the ring. When you find a diamond you love, the next step is to build your ring. ROSI seamlessly connects you to our ring design studio. You can browse settings by style (solitaire, halo, vintage, etc.) or use our 3D ring builder to see how the stone looks in different settings and metals. Since we craft each ring to order, you can even request tweaks and custom changes. Our system calculates everything instantly – ensuring the stone will fit perfectly in your chosen setting.
We craft and ship your custom ring. Once your diamond and design are finalized, RockHer’s artisans get to work. In our Los Angeles workshop, expert jewelers hand-make your ring with precision. Meanwhile, our system double-checks every detail for quality. After production, we insure and ship your ring straight to your door (or coordinate local pickup if you prefer). Throughout this whole process, ROSI (and our support team) keeps you updated on status.
Throughout these steps, ROSI leverages the latest AI technology (OpenAI and Grok) to understand your requests and market data. At the same time, real experts are behind the scenes verifying each recommendation. This combination of cutting-edge AI stack and human oversight ensures you get results that are both smart and reliable. And because ROSI is available online 24/7 (and our team is reachable by chat or phone anytime), you have support whenever you want it – making the whole diamond-buying journey truly omnichannel.
When you use ROSI by RockHer, you gain many advantages designed to make diamond buying easy and confident. Here are some of the biggest benefits:
Personalized Diamond Matchmaking. ROSI tailors its search to you. Instead of sifting through endless search results, ROSI listens to your budget and style preferences, then delivers a custom selection of stones. Its AI-based “digital gemologist” approach means recommendations feel like they came from a knowledgeable friend who understands what you value most.
Expert Guidance (AI + Human). You get the best of both worlds: 24/7 AI-powered suggestions plus real human expertise. ROSI handles the data-heavy search, and RockHer’s team of gemologists is always here to double-check results and answer questions. This builds confidence for first-time buyers – you’re never completely on your own, even though the experience is streamlined.
End-to-End Ring Service. Unlike a search-only platform, ROSI is part of a full-service process. After finding your diamond, you don’t have to go elsewhere. RockHer lets you design your custom ring on the spot and takes care of crafting, shipping, and warranty. This one-stop approach saves time and reduces risk, since the whole process is managed by us (with your interests in mind).
Access to Curated Inventory. We work with top suppliers to source a wide range of GIA-certified diamonds (both natural and lab-grown). ROSI’s search taps into this quality inventory, plus special collections like our exclusive cushion-brilliant cuts. You benefit from knowing each stone meets high standards.
Value and Transparency. ROSI helps prevent overpaying. Its engine compares market data to ensure you get fair prices, and RockHer’s experts verify each suggestion. We’re committed to transparency: you’ll see pricing breakdowns and have no hidden fees. This is especially reassuring if you’re new to diamonds.
Convenience Anytime, Anywhere. ROSI is available online around the clock, and you can also reach us by phone or live chat at any time. Whether you’re a night-owl doing research or have quick questions on a weekday, you won’t be left waiting. This convenience means you can take your time learning without pressure.
Confidence and Peace of Mind. Ultimately, ROSI is designed to make you feel good about your purchase. By combining high-tech search with trusted craftsmanship (every RockHer ring comes with a lifetime warranty and easy resizing), ROSI aims to turn a daunting process into a reassuring experience. You’ll know exactly what you’re getting and feel confident that your ring is custom-made for you.
These benefits show why many engagement ring shoppers prefer ROSI’s approach. It transforms diamond hunting from a chore into an intuitive, guided experience – all built on RockHer’s dedication to quality service.
ROSI (short for Rational Octahedron Selection Intelligence) is RockHer’s AI-powered digital gemologist. It’s a free tool that guides you through finding a diamond. You start by telling ROSI your basic criteria (shape, carat, budget, and priorities like size vs. color). ROSI then analyzes our global diamond inventory using a proprietary algorithm enhanced with advanced AI (including OpenAI’s and Grok’s models). In seconds, ROSI returns a curated list of diamonds that fit your requirements. You can refine the search by chatting with ROSI or our experts until the match feels perfect. Finally, you select a diamond and use our site to design or customize your ring. ROSI stays involved throughout, ensuring the diamond you choose will work in your ring and that the entire process is smooth.
StoneAlgo is an independent online diamond platform. It’s essentially a large marketplace and search engine that aggregates diamonds from many online retailers (over 2 million stones). It offers tools like Smart Search filters, a Price Calculator, historical Price Indexes, and a side-by-side comparison tool so you can compare up to four diamonds at once. StoneAlgo’s focus is on helping you find good deals: it highlights underpriced diamonds and estimates fair market values so you can save money. Like ROSI, StoneAlgo covers both natural and lab-grown diamonds. However, StoneAlgo is a self-service tool; it helps you search and compare loose stones, and then you typically complete the purchase through a partner jeweler or the site listing.
StoneAlgo and ROSI both help you find diamonds, but in different ways. StoneAlgo is like a broad shopping assistant: it shows you a vast collection of diamonds from various sellers and provides analytical tools to compare them yourself. ROSI, in contrast, acts more like a personal concierge. It actively narrows down options for you based on your specific needs, and offers personalized, AI-driven guidance (plus live support from our experts). After finding a diamond, StoneAlgo expects you to handle the ring design and buying process on your own. ROSI is part of a full-service experience: once a diamond is chosen, you can immediately design and order a custom ring with RockHer. In short, StoneAlgo helps with diamond search data; ROSI helps with the entire journey from search to ring creation.
Yes. StoneAlgo explicitly includes lab-grown diamonds in its inventory and tools. Their filters and price calculator cover lab-grown options. ROSI also works with lab-grown stones. If you prefer a lab-grown diamond, just let ROSI know your preference. It will then include lab-grown options in its recommendations. We apply the same selection criteria to lab-grown stones (grading, brilliance, etc.) as we do for natural diamonds. Both tools make it easy to shop for either type, giving you more options and allowing you to compare the value of lab-grown versus mined stones.
Absolutely. ROSI is a free service to use on RockHer. You can interact with ROSI, get diamond recommendations, and even design your ring without any upfront fees. You only pay if you decide to purchase a diamond or ring through RockHer. StoneAlgo is also free to use for searching and comparing diamonds. Neither platform charges you just to run a search. However, keep in mind that if you buy a diamond, ROSI’s costs are included in the pricing of the final ring.
Yes! One of ROSI’s strengths is that you have access to our human experts at every step. While ROSI handles automated searching and suggestions, RockHer’s diamond specialists are always ready to help. You can reach out via our 24/7 live chat, call our hotline, or send us an email at any time. We encourage you to ask questions or get advice; our team will discuss ROSI’s recommendations, help explain details, or suggest adjustments. StoneAlgo, by contrast, is primarily a self-service site and does not offer live personalized support. With ROSI, you get both AI assistance and the reassurance of real human guidance.
Your satisfaction is our top priority. Before we finalize anything, we encourage you to review diamond details and ask all questions. Every diamond suggested by ROSI comes with full grading reports (GIA/IGI) so you can inspect everything. Once you’ve received your ring, RockHer offers a generous return policy and a lifetime warranty. If for any reason you feel the diamond or ring isn’t right, just contact us – we’ll help make it right. StoneAlgo will help you evaluate diamonds, but if you buy through one of their partners you’d follow that seller’s return policies. At RockHer, we handle everything in-house, which means we personally back each purchase.
The information on this page is for general guidance only. RockHer is not affiliated with StoneAlgo, and descriptions of StoneAlgo’s services are based on public information and may change over time. This comparison reflects RockHer’s perspective and experience. We strive for accuracy, but neither RockHer nor StoneAlgo can guarantee product availability, pricing, or outcomes. Diamond specifications, prices, and policies can vary and should be confirmed with each platform at the time of purchase. Always review official terms and consult RockHer’s experts for personalized advice. RockHer makes no warranties, and cannot be held liable for any decisions made based on this content. Use this guide as a helpful overview, not a substitute for professional evaluation.
