Find Your Perfect Diamond
Made to sit flush against the engagement ring it was designed for.
Every ring is made from start to finish in our Los Angeles atelier.
ROSI is the gemological intelligence behind RockHer™. Built by GIA gemologists. Available wherever you reach us: chat, phone, email, SMS, Instagram, Facebook. Connected to every system that runs the business. Confirmed by human hands before any diamond ships.
Our founder, Shawn, is the fourth generation of a family in the international diamond and gemstone trade. For as long as he can remember, friends and family brought the same question to his door: “I want to do this right. What diamond should I get?”
A gemologist can answer that question in person, with the stone in hand. The real problem was answering it at scale, for everyone who couldn’t walk into the atelier.
So Shawn, a GIA Graduate Gemologist, spent two years building ROSI™, encoding four generations of the family’s judgment alongside senior gemologists, including former heads of the GIA Los Angeles laboratory. A system that evaluates every diamond before it ever reaches a customer.
And it was named for someone the team built it for. Someone real. That’s the part the technical name doesn’t say.
Every diamond begins as an octahedral crystal, a perfect double pyramid formed billions of years before any cutter touches it. ROSI™ evaluates from first principles: what the stone actually is, not what its certificate claims it to be.
ROSI was named for Rose, someone who mattered to the people who built it. It’s a reminder that every diamond purchase represents a moment that matters deeply to a real person. Someone loves someone enough to spend thousands marking that love permanently. ROSI™ carries that.
Brilliance, fire, scintillation. We measure light return percentages, dispersion, and contrast patterns under five lighting conditions.
Crown angle, pavilion depth, table percentage, girdle thickness, polish, facet alignment. The engineering that determines whether the stone performs at its theoretical maximum.
Tested under daylight, office fluorescent, restaurant warm light, candlelight, and direct sunlight. The score reflects average performance, not just lab conditions.
Top 4% of stones we evaluate. The best we find.
Our default range. Eye-clean, light-active.
ROSI™ names the trade-off before you decide.
Optical or structural compromises. ROSI™ says pass.
Every diamond we sell ships with the full breakdown · See a ROSI™ Score Report
“On paper, perfect. In person, dull. The certificate grades the stone; ROSI™ grades how it performs.”
“Two color grades down and a clarity grade lower, yet it outperforms the paper-perfect diamond on every visual axis, at a meaningfully lower price.”
“All three pillars in the top 2%. The kind of stone we set aside the moment it walks in.”
Most jewelry brands have a chatbot on their website and a separate email queue and a separate phone team. RockHer™ has ROSI everywhere, with the same intelligence, the same live data, and the same gemological standards on every channel.
“DM us on Instagram at 11pm on a Sunday and ROSI™ answers with live inventory in real time, not ‘we’ll get back to you Monday.’”
No competitor matches this. Every other jeweler hands real questions off to a human and asks you to wait. ROSI™ answers with the same data the gemologist would, on whatever channel you opened.
Shopify, AWS, our proprietary backend, the ring configurator, the pricing engine, the order system. ROSI™ reads from all of them. Live.
That’s why ROSI doesn’t deflect. Doesn’t hand you off. Doesn’t say “check your confirmation email” or “a team member will follow up.” Real answers, from the actual data, in real time.
For all of ROSI’s intelligence, every diamond a customer orders still passes through our atelier physically before it ships.
ROSI™ does the curation at scale. The gemologist confirms in person. Both layers, every time.
This is what closes the online buying gap. Worried about buying a diamond you can’t see in person? A real gemologist sees it before it ships.
Gemological intelligence + omnichannel deployment + system integration + human verification. The category is empty besides RockHer™.
| Gemological Intelligence | Omnichannel | System Connected | Human Verified | |
|---|---|---|---|---|
ROSI™ (RockHer) |
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Brilliant Earth
Sustainability filter, not gemological intelligence
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− | − | − | − |
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Rare Carat
Price scoring, not full ranking. Marketplace model.
|
Partial | − | − | − |
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James Allen (closing)
Imaging only. Being folded into Blue Nile.
|
− | − | − | − |
|
Tiffany / Cartier
In-store gemology. No scaled intelligence layer.
|
Partial | − | − | |
|
Industry standard chatbot
Off-the-shelf. Hands every real question to a human.
|
− | − | − | − |
We rebuilt what a jeweler is. Gemological expertise that scales. Available wherever you reach us. Connected to every system. Verified by human hands. Anchored in a Los Angeles atelier, family owned since 1967.
Considering a diamond, here or anywhere? Send the GIA or IGI certificate number and our gemological team returns its ROSI™ Score and a read of where it sits in the current market. Complimentary, within minutes.
Score a DiamondWhere stones of the same exact specifications are trading on the open market right now. You get a straight answer, even when the diamond is not ours.
Browse our ROSI™ scored diamonds, or ask ROSI directly. Same intelligence either way.
GIA grades the technical attributes of a diamond (color, clarity, carat, cut grade) using strict laboratory standards. ROSI™ takes those attributes plus 40 additional optical and structural metrics, from light return percentages to scintillation patterns to table-to-depth ratios, and produces a single score that reflects how the diamond actually looks to the human eye. GIA tells you what the diamond is. ROSI™ tells you whether it's worth buying.
Yes. ROSI™ was built in-house by our founder, Shawn, a GIA Graduate Gemologist, working with senior gemologists including former heads of the GIA Los Angeles laboratory. The scoring rubric was used by hand by our gemology team for over a decade before it was encoded into ROSI™. Every score still feeds back to our gemologists for review.
Yes. Same intelligence on every channel: website chat, phone, email, SMS, Instagram DMs, Facebook DMs. Same live inventory access, same pricing data, same diamond grading data. DM us on Instagram at 11pm on a Sunday and ROSI™ answers with real data, not 'we'll get back to you Monday.'
No. ROSI™ does the curation at scale, choosing which diamonds enter our collection. Our Lead Gemologist, John Anderson, still examines every diamond physically before it ships, verifies the certificate matches the stone, confirms the ROSI™ score holds up in person, and personally approves it. Both layers, every time.
Yes. ROSI™ scores natural and lab-grown diamonds on identical criteria. The score reflects optical and structural quality regardless of origin. A 96-scoring lab-grown diamond performs identically to a 96-scoring natural diamond. Only the price differs.
It's the technical name. Every diamond begins as an octahedral crystal, billions of years before the cutter's wheel. That's where ROSI™ evaluates from. First principles: what a diamond actually is, not what its certificate claims it to be.
Rose was the person ROSI was named for, someone who matters to the people who built it. The double meaning is intentional. Behind the intelligence is a name. Behind the name is a person. Behind the person is the recognition that this work matters, because someone loves someone enough to spend thousands of dollars marking that love permanently.
Send us a GIA or IGI certificate number, by chat, DM, or email, and ROSI™ runs the score, shares the breakdown, and tells you whether we’d sell it. No commitment.
ROSI™ is a proprietary technology of Rockher Haute Jewels, LLC. RockHer® is a registered trademark, USPTO Registration No. 7,808,197. rockher.com is the only official RockHer website.
