How do I know if a jeweler is reputable?

Priya walked in last March with a diamond ring she'd bought online from a jeweler with 4.9 stars and more than 600 reviews.

The stone had a small chip on the girdle. The prongs were loose enough to slide a business card under. The jeweler's email bounced when she tried to return it. That is the hard part about knowing if a jeweler is reputable: most of what matters you cannot see in a storefront or a screenshot.

How to know if a jeweler is reputable: ask who's actually doing the work

The first thing I tell clients: ask if there's a bench jeweler on site. Not a salesperson who says "our jewelers." A named person who sets stones, sizes rings, and repairs prongs at that location. If the answer is no, that doesn't mean the shop is dishonest. It means you're buying from a middleman. For a simple solitaire, maybe fine. For a custom ring or a fragile heirloom, I'd want to meet the person who's going to touch my stones.

I spent a decade around 47th Street in New York. Plenty of reputable shops there don't have a bench visible to customers, but they can tell you exactly which trade shop they use and how to reach them. A reputable jeweler will tell you who does the work. A shop that gets cagey about that is hiding something, usually inexperience or a mark-up.

Credentials you can actually verify

Look for GIA, AGS, or Jewelers of America. A GIA Graduate Gemologist diploma should be on the wall or in a drawer if you ask. I earned mine, and I'll show it to anyone who asks. AGS members agree to annual inspections, which is more than most stores can say. Online reviews are not credentials. I could buy 4.9 stars overnight.

Then ask for a lab report on the stone. For a natural diamond, GIA or AGS. For lab-grown, IGI is the standard. For a colored stone, GIA or AGL or GRS. If a jeweler won't provide a report before you commit, or wants to sell you a "certified" stone with a report from a lab you've never heard of, walk away. A 1.04 carat F/VS1 round with a GIA triple excellent is a different stone than one sold on a verbal promise.

Three red flags I tell my own clients about

• Pressure to buy today. A custom ring is a six-to-ten-week process. Anyone rushing you is clearing inventory.
• No written estimate. Ask for line items: metal, stone, labor, casting, setting, finishing. If they won't, you can't compare anything.
• No return policy on loose stones. Even a small shop should let you return an unmounted stone within a reasonable window if you get an independent appraisal.
• Discounts that seem too deep. "Wholesale to the public" is a phrase I'd run from. Real wholesale doesn't happen at a mall counter.

One more red flag: a jeweler who won't tell you what cannot be done. Tungsten rings cannot be resized, only replaced. Tension settings limit resizing range. A reputable jeweler volunteers that before you pay. The ones who don't are either ignorant or hoping you won't ask. Neither is good.

The bench test

Ask to see the workshop. Not every store will let customers walk behind the counter for insurance reasons, but they should have photos or a quick video, and they should be able to describe their equipment. I work with a Foredom flex shaft, a laser welder, a worn bench pin shaped over years. If a shop can't name a single tool and says "our workshop is off-site," fine. Then ask for the workshop's name.

Daniel came in last summer wanting a tension setting for a moissanite center. The first jeweler he visited told him it was a great choice and quoted $1,200. No mention that the ring couldn't be sized more than a quarter size, or that the stone sits under constant mechanical stress. I told him the same thing I'll tell you: tension settings make me nervous. I'll build one, but I'll quote the resizing limits in writing and have him sign off. The reputable move is the uncomfortable one.

What to actually do this week

Take the stone you're considering to a second jeweler for an independent inspection before you buy. It'll cost around $75 to $150. The reputable ones won't mind. Ask about the shop's bench, their repair policy, and whether they'll re-tip prongs years from now. If they can answer those questions without blinking, you're probably fine.

Most people spend more time researching a laptop than a jeweler. Then they're surprised when a prong snags and the stone is gone. The reputable shops don't hide behind reviews. They show you the work.