What diamond items do you buy?
Anything with a real diamond in it, in any form it happens to be in. Diamonds are not priced like gold: there is no melt formula, no purity table, and no per-gram rate, because a diamond's value lives in its individual characteristics rather than in what it would weigh in a crucible. Every stone gets its own assessment, which is exactly why the categories below all belong at the same counter.
| What you have | How it is assessed | What to know before you come in |
|---|---|---|
| Engagement rings | Stone on the 4 Cs; band weighed and priced separately as metal | The most common diamond item we buy. Solitaires, halos, three-stone and pave settings, with both components paid |
| Loose stones | Full 4 Cs assessment; girdle checked for laser inscriptions | Any shape, from round brilliant to fancy cuts. Papers help but are not required |
| Diamond jewelry | Stones and metal valued as separate components, or intact if worth more whole | Studs, pendants, tennis bracelets and cluster pieces. Keep pairs and sets together |
| Watches with diamonds | Maker, model, condition, diamonds, and case metal all weighed in | A fine watch can outvalue its materials; we price whichever way pays more. See the watches page |
| Estate and antique pieces | Valued intact as period pieces first, then as components, higher figure paid | Old European, old mine and rose cuts have their own collector demand despite older proportions |
Two categories deserve their own pages: watches, where the maker and movement can matter more than the stones, and estate lots, where a whole collection is assessed in one sitting. And if what you mostly have is gold with a few small stones in it, start at sell gold jewelry, because the metal will likely carry the value.
How is a diamond offer built?
A diamond offer has two halves, and an honest buyer shows you both. The stone is one purchase; the metal it sits in is another; the offer you hear is the two added together, with each part explained.
- The stone is assessed on the 4 Cs, at the counter. Carat weight, cut, color and clarity are established with a loupe, a gemological microscope and master comparison stones, in front of you rather than in a back room. The girdle is checked for a laser inscription, which can tie the stone to an existing grading report.
- Certified papers are checked, if you have them. A GIA or AGS report is verified against the stone itself: weight, proportions and the plotted inclusions have to match. Verified grades remove uncertainty, and less uncertainty supports a stronger offer. No papers simply means the counter assessment stands on its own.
- The mounting is weighed and priced separately, as metal. The band or setting is tested with XRF for its karat or platinum content, weighed on a certified scale, and priced against the live metal market that day, exactly as it would be if you walked in with it empty. You are paid for both the stone and the metal, never for one with the other thrown in free.
- Secondary-market demand sets the stone's price. Dealers trade stones on a wholesale market where demand differs sharply by shape and size. We price your stone from where it actually sits in that market and tell you why, so the number arrives with its reasoning attached.
Accept the combined offer and you are paid in cash the same visit. Decline and you leave with your diamond exactly as you brought it, at no charge. Either way you walk out knowing precisely what you own, which is worth something even on the days you decide not to sell.
What are the 4 Cs, and which one matters most?
Every diamond in the world is priced on the same four characteristics. What most sellers are never told is that the four do not pull equally: for resale, carat weight dominates, cut shapes what the eye sees, and color and clarity only start moving serious money as the stone gets larger.
| Factor | What it measures | How it moves your offer |
|---|---|---|
| Carat | Weight, measured to the hundredth of a carat | The dominant factor, and it compounds: one large stone is worth far more than several small stones of the same total weight and quality |
| Cut | Proportions, symmetry and polish, graded Excellent to Poor | Controls the sparkle a buyer's customer will actually see. A poorly cut stone gives back part of its carat advantage |
| Color | Body tint, graded D (colorless) down through Z | Matters more as stones get larger. On a small stone, neighboring grades barely move the figure; on a large one they move real money |
| Clarity | Internal inclusions and surface blemishes, graded Flawless to I3 | What the naked eye cannot see costs less than sellers fear. Eye-visible inclusions are what genuinely lower a stone's market |
On top of the four sits certification. A GIA or AGS report is not a fifth C, but it makes the other four provable, which is why certified stones tend to draw firmer offers. Shape matters too, because the secondary market has favorites: round brilliants enjoy the deepest demand, while fancy shapes trade to narrower audiences. None of this requires homework on your part. The assessment at the counter establishes all of it, and we explain where your stone lands as we go.
Bring the ring, watch the assessment, hear both numbers. Free, no appointment.
📞 Call (732) 483-4145Do I get paid for the gold or platinum mounting too?
Yes, always, and this is the part of a diamond sale where careless sellers quietly lose money. An engagement ring is two assets wearing one price tag: a stone with a market of its own, and a band of gold or platinum with a live commodity price. A buyer who quotes you one round number for the ring, without breaking out the metal, is hoping you will not ask which half of the value went missing.
At our counter the mounting is treated exactly like any other precious metal purchase. The band is tested with XRF to establish its karat or its platinum content, weighed on a state-certified scale you can see, and priced against the live metal market on the day you visit. That figure is stated separately from the stone's figure, so you can see precisely what each component contributes before you decide anything.
This matters most at the small end of the stone range. Melee and small accent diamonds trade thin on the secondary market, so a ring crusted with tiny stones usually earns most of its offer from the metal it is made of. That is not bad news; it is just the truth, and knowing it protects you from any buyer who waves at the sparkle while underpaying the band. Platinum settings deserve particular attention, because platinum is denser than gold and a substantial platinum mounting is a meaningful asset in its own right.
The same two-asset logic runs through our whole gold buying service: every component of what you carry in gets identified, measured and priced as what it actually is.
Why sell a diamond locally instead of mailing it in?
For gold, mail-in selling is merely a worse deal. For diamonds it is a worse deal with higher stakes, because a diamond's value depends entirely on an assessment you cannot watch happen through the mail.
- You see the assessment. At a counter, the loupe work, the measurements and the color comparison happen in front of you, and you can ask questions at every step. A mail-in envelope gets you a stranger's verdict on your stone, delivered as a take-it-or-leave-it number.
- Nothing you own travels. No shipping label on an engagement ring, no tracking anxiety, no claims process if a package disappears. Your diamond never leaves your sight until the moment you decide to sell it.
- Declining costs nothing. Walk-in sellers who pass on an offer walk out with the ring. Mail-in sellers who decline wait on return shipping, often at their own expense, and only then discover what condition the piece comes back in.
- Cash the same day. An accepted offer at our counter is paid before you leave. Mail-in timelines run a week or more, and the check arrives after your leverage is gone.
Central New Jersey gives you eight counters to choose from, so distance is no argument for the envelope. Our stores in Aberdeen, Brick, East Brunswick, Farmingdale, Manalapan, Middlesex, Millstone and New Brunswick all assess diamonds the same way, with no appointment needed. Find yours on the locations page.
The wider diamond market, from the district to the resale rack
Shopping for a used, preowned or secondhand engagement or wedding ring?
The resale market is where every stone we buy ends up, and it is worth understanding from both sides. A used or preowned engagement ring trades well below its original retail price, which is exactly why secondhand wedding rings are a smart buy and why a seller should never measure an offer against the boutique receipt. When you sell to us, you are selling into that resale market with the retail markup already stripped out, and the offer reflects what the stone genuinely trades for between dealers.
The New York diamond district's stores vs a New Jersey counter
The Manhattan diamond district's stores work from the same GIA standards and the same wholesale market we do. What the trip adds is tolls, parking, and a crowd of competing counters practiced in pressure; what it does not add is a better grading system. Our eight New Jersey counters price certified and uncertified stones from the same market data, in front of you, with no appointment and same-day payment.
Unclaimed diamonds and where they end up
Unclaimed diamonds, stones left behind at repair shops, storage units and estates with no owner to collect them, eventually flow into the same wholesale resale market as everything else, usually at auction. It is one more supply channel that sets the honest trading level for used stones, and one more reason the resale price of a diamond sits where it does rather than at retail.
Why is a diamond offer below the retail price?
This is the question behind most diamond-selling disappointment, so it deserves a straight answer before you drive anywhere: no honest buyer, ours or anyone else's, can pay you back the retail price of a diamond, because much of that price was never the stone.
A retail jewelry price carries the showroom's rent, its staff, its advertising, its insurance, its financing programs and its margin. All of that is real cost, and all of it evaporates the moment the ring leaves the store, because none of it transfers to the next buyer. What remains is the stone itself, and stones trade among dealers on a secondary market with its own prices, set by what buyers actually pay for each combination of size, shape and grade, not by what any retailer once charged.
Our promise is not to close that gap, because nobody honest can. Our promise is to explain the figure rather than inflate it. You will hear where your stone sits in the current market and why, with the reasoning stated plainly enough to repeat to anyone else you get a quote from. We would rather you compare offers with clear eyes than accept one in confusion, and sellers who do compare come back, which is how a buyer earns a 4.9 star rating across 1012 Google reviews.
One honest silver lining: expectations cut both ways. Sellers braced for disappointment are often surprised upward by a heavy platinum band, a stone that grades better than they assumed, or a signed setting worth more intact. The assessment is free, so the only way to know which surprise you own is to bring it in.
What happens when I walk in with a diamond?
The process is the same at all eight stores, and every step happens where you can watch it.
- Walk in, no appointment. All eight stores are open Monday through Friday, 10 to 6. Saturday hours vary by store and two stores are closed Saturday, so check your store's page before a Saturday trip. All eight are closed Sunday.
- ID check. New Jersey law requires a licensed precious metals buyer to record a valid government-issued photo ID for every purchase. It takes about a minute.
- The stone is examined, in front of you. Loupe and microscope work, measurement, and color comparison against master stones establish the 4 Cs. The girdle is checked for laser inscriptions, and any papers you brought are verified against the stone itself.
- The mounting is tested and weighed separately. XRF establishes the karat or platinum content, and the certified scale sets the weight, both where you can see them.
- You hear both numbers and how they combine. The stone's figure, the metal's figure, and the reasoning behind each, out loud, with room for questions.
- You decide, without pressure. Accept and you are paid in cash the same visit. Decline and you leave with your diamond exactly as you brought it. The assessment is free either way, and nobody asks why you are selling.
A single ring usually runs 15 to 30 minutes door to door. Estate lots and multi-piece collections take longer, because every stone gets its own examination rather than a glance and a group discount.
What do I need to bring?
- A valid government-issued photo ID. Driver license, state ID or passport. New Jersey law requires it for every precious metals sale, so there is no transaction without it.
- The piece, with the stone left in its mounting. Do not have the diamond removed first. Unmounting risks chipping the girdle, which permanently lowers the stone's value, and we handle any removal ourselves if the sale goes ahead.
- Any papers or receipts you happen to have. GIA or AGS reports, purchase receipts and insurance appraisals all sharpen the assessment. Helpful, never required.
- Matching sets kept together. Stud pairs, wedding sets and suites can be worth more assessed together than piece by piece.
- Everything else in the drawer. Gold, watches and other jewelry can be assessed in the same visit, so one trip covers the lot.
- No appointment. Walk into any of the eight stores during business hours. The assessment is free and there is no obligation to sell.
That is the entire preparation. If the papers are lost, do not put off the visit hunting for them; the counter assessment stands on its own, and a found certificate can always be brought in later.
Eight walk-in stores across Central New Jersey. Free diamond assessment, no appointment, same day cash.
📞 Call (732) 483-4145Common questions from diamond sellers in New Jersey
Do I need a GIA certificate to sell my diamond?
No. We buy uncertified diamonds every week, assessed at the counter with a loupe, a gemological microscope and master comparison stones. A GIA or AGS report does help, because verified grades remove uncertainty from the assessment, and less uncertainty supports a stronger offer. If you have papers, bring them; if you never had any, come in anyway.
Will you buy my engagement ring?
Yes, and it is the single most common diamond item we see. The stone is assessed on the 4 Cs, the gold or platinum band is weighed and priced separately on the live metal market, and you get one combined offer with both parts broken out. Nobody at the counter will ask why you are selling.
Is the gold in my ring paid separately from the diamond?
Yes, always. The mounting is a precious metal purchase in its own right: we test the band's karat with XRF, weigh it, and price it against the live gold or platinum market on the day you visit. The diamond is valued on its own merits. You are paid for both components, never for one with the other thrown in.
Why is the offer below what I paid at retail?
Because a large share of the retail price was never the stone. It covered the jeweler's rent, staff, marketing, insurance and margin, and none of that transfers when the diamond is resold. Secondary-market diamond prices reflect what dealers actually trade stones for, and every honest buyer prices from that market. We explain the figure line by line rather than inflate it, and you are free to compare offers before deciding.
Do you buy small diamonds and melee?
Yes, with honest expectations set up front. Small stones and melee trade thin on the secondary market, so a ring covered in small accent diamonds usually earns most of its offer from the gold or platinum it is made of. We will tell you plainly which part of your piece is carrying the value rather than let you guess.
Do you buy lab-grown diamonds?
Yes, and we identify them honestly. Lab-grown stones are chemically real diamonds, but their resale market has fallen sharply as production scaled, so offers run well below what natural stones of the same grades bring. If you have paperwork stating whether the stone is natural or lab-grown, bring it; if not, our testing establishes it.
Should I have the diamond removed from its setting before selling?
No, please leave it exactly where it is. Removing a stone risks chipping the girdle, which permanently lowers its value, and it costs you money to have done. We assess mounted stones at the counter and handle any unmounting ourselves if the sale goes ahead. A ring arrives worth the most when it arrives untouched.
Which of the 4 Cs matters most when selling a diamond?
Carat weight, and it compounds rather than adds: a one carat stone is worth far more than two half carat stones of the same quality. Cut is next, because it controls how the stone actually looks. Color and clarity matter more as the stone gets larger, where a single grade step moves real money. On small stones those same steps barely move the figure.
Do you buy loose diamonds with no paperwork at all?
Yes. A loose stone with no papers gets the full counter assessment: loupe and microscope examination, measurement, color comparison against master stones, and a check for laser inscriptions on the girdle that can tie a stone to an existing grading report. Paperwork shortens the process and firms up the offer, but its absence never blocks a sale.
Do you buy diamond watches?
Yes. A watch with diamonds is assessed on all of its parts: the maker and model, the condition and movement, the diamonds, and any gold or platinum in the case and bracelet. Depending on the piece, the watch itself or its materials may carry most of the value, and we price whichever way pays you more. The watches page covers this in detail.
Do you buy estate and antique diamond jewelry?
Yes. Old European cuts, old mine cuts and rose cuts follow older proportions that modern grading undervalues, but they have their own collector demand. We assess whether an estate piece is worth more intact as a period piece or as its separate stone and metal components, and we show you both figures before you decide. Estate lots have their own process on the estate buyers page.
Is it better to sell a diamond locally or mail it in?
For a diamond, local wins decisively. You watch the assessment happen instead of trusting a stranger's description of your stone, nothing you own travels through the mail, there is no return-shipping hostage game if you decline, and you are paid in cash the same visit. Mail-in only makes sense when there is no trustworthy counter nearby, and in Central New Jersey there are eight.
What do I need to bring to sell a diamond in New Jersey?
A valid government-issued photo ID, which New Jersey law requires for every precious metals purchase, and the piece itself, with the stone left in its mounting. Bring any grading reports, receipts or appraisals you have, and keep matching sets together. Papers help but are never required, and no appointment is needed.
Do you pay cash for gold and diamonds in the same visit?
Yes. Gold and diamonds are bought together in one visit and paid in one cash payout: the metal is XRF-tested, weighed and priced on the live gold market, the stones are graded on the 4 Cs, and both values are broken out on a single offer. Most sellers with a diamond ring are really selling both, and they are paid for both.
Do you lend against diamonds, or only buy them?
We buy, we never lend. There is no loan, no interest and no ticket to redeem: you hear an outright cash offer, and if you accept it, the money is yours to keep with nothing owed. If you decline, you walk out with your diamond and the assessment cost you nothing.
Where to go next
Sell platinum · Sell coins · New Jersey gold selling guide · All FAQs