This Is The One Item You Should Never By At Local Markets In Cancun According To Travelers

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Mercado 28 is a rite of passage for Cancun tourists. It is vibrant, chaotic, and full of energy. You go there for the colorful ceramics, the hand-woven blankets, and the sheer fun of haggling for a $10 sombrero.

But Here at The Cancun Sun, we have seen too many travelers leave that market with a “deal” that turns into a disaster. While most vendors are just trying to make a living, there is a sophisticated scam running in the jewelry shops that targets tourists looking for something “authentic.”

If you are heading to Mercado 28 this week, here is the one item you need to avoid at all costs.

The Item: “Rare” Gemstones (Fire Opal, Mayan Sultanita, Alexandrite)

The scam is almost always the same. You are looking for a silver ring or a necklace. The salesperson pulls out a tray of stunning, color-changing stones.

The Pitch: They tell you it is a rare local stone found only in the cenotes or mines of the Yucatan. They might call it “Mayan Sultanita,” “Mexican Alexandrite,” or “Fire Opal.” They show you how it changes color under different lights. They promise it is set in real .925 sterling silver. The Trap: It is glass. Or at best, a cheap lab-created synthetic stone worth pennies.

How The Setup Works

This isn’t just a random shopkeeper trying to get lucky. It is often a coordinated effort that begins before you even arrive at the market.

1. The Taxi Driver Commission As we warned in our guide to tourist traps to avoid, taxi drivers are often part of the ecosystem. A driver might be incredibly friendly, offer you “local tips,” and insist on dropping you off at a specific entrance or shop at Mercado 28.

• Why? He isn’t doing you a favor. He is getting a commission (kickback) for delivering a fresh tourist to that specific jewelry store.

2. The “Sterling Silver” Lie The stone is the hook, but the metal is the insult. You pay $200 for a ring marked “.925” (Sterling Silver). Two days later, your finger turns green. The ring is actually cheap copper or nickel plated in a thin layer of silver that rubs off in the humidity.

• The Reality: As we discussed in our report on souvenir buying, authentic silver is sold by weight and reputable dealers. If a vendor is “bartering hard” and dropping the price by 70%, the metal is likely fake.

The “No Refunds” Policy

The final nail in the coffin is the receipt. Once you hand over your credit card, you are often asked to sign a receipt that—in fine print—says “No Refunds.” When you return an hour later because the stone fell out or the band chipped, they point to the sign. Banks often deny the chargeback because you signed the policy.

The Savvy Move: Buy The Cheap Stuff

We love Mercado 28, but we treat it as a place for fun, not investment.

• Buy: T-shirts, magnets, shot glasses, blankets, and painted ceramics. These are great souvenirs, and if you overpay by $5, it’s part of the game.
• Avoid: Anything with a “Certificate of Authenticity” printed on flimsy paper.
• For Jewelry: Stick to established, air-conditioned jewelry stores in Plaza Las Americas or La Isla Shopping Village. You will pay retail prices, but you will get real gold and silver.

The Verdict

Go to the market. Eat the tacos. Buy the sombrero. But if a “friendly” taxi driver insists you visit his cousin’s jewelry shop to see a “rare Mayan stone,” keep your wallet in your pocket.