How to buy

GENUINE, VERIFIED, AFFORDABLE

We Guarantee the Authenticity of What You Buy

Buyer Protection Guarantee

Seller ID Verification

Mandatory ID verification for sellers ensures a secure buying and selling process on GEMGEM.

Item Detail Verification by Our Professional Team

Our professionals thoroughly verify every item's details before listing to ensure authenticity and quality.

IGI Authentication Before Delivery

All items undergo IGI authentication before delivery, ensuring you receive a genuine product.

GEMGEM Buying Journey:

5-Step Process

You can choose your favorite among many types of jewelry. After Selecting your piece, you can negotiate the best price with the owner of the diamond jewelry. The payment and delivery process will be absolutely transparent, allowing you to sit back at home and wait for the arrival of your new favorite.

Browse through a wide selection of jewelry and compare different pieces effortlessly. Once you find your perfect match, negotiate the best price directly with the seller. With a completely transparent payment and delivery process, you can relax and await your new treasure.

Browse our marketplace

Explore the GEMGEM marketplace and pick your favorite pieces.

Make the purchase with our add-on service

Love a piece but what a better deal? Negotiate directly with the seller by sending your counteroffer. It's your chance to find the perfect price.

IGI Authentication

After you place your order, the item is sent to IGI for expert verification and certification before delivery.

Optional Refurbishment & Resize

If selected, your jewelry will be sent for optional refurbishment and resizing by our certified experts before shipping. This service ensures that your pre-owned item looks and feels like new.

Delivery & Optional Resale

Once authentication is complete, your item is securely shipped to you. If you're not satisfied for any reason, you can relist the item on GEMGEM within 30 days — with zero commission fees.

Customize Your Experience

At GEMGEM, customization is easy and expertly crafted to enhance your jewelry experience.

Refurbish Your Jewelry

Exclusively for first-time buyers on GEMGEM: Enjoy a complimentary refurbishment service! Our experts restore your jewelry’s original brilliance and timeless beauty.

Re-size

Get the perfect fit with our resizing service. We tailor your jewelry to match your style and comfort.

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Buyer Protection Promise

GEMGEM Buyer Protection Promise

Guaranteed Authenticity

Every item is authenticated before shipping by certified gemological experts

Payment Protection

Funds are held in escrow and released only after authentication, ensuring complete peace of mind.

30-Day Commission-Free Resale

Not happy with your purchase? Relist it on GEMGEM within 30 days and pay zero commission fees.

Why IGI?

International Gemological Institute

At GEMGEM, trust is our foundation. That’s why we partner with the renowned International Gemological Institute (IGI)—the world’s largest independent laboratory for diamonds, gemstones, and jewelry grading.

IGI provides rigorous verification to ensure every piece is 100% authentic and conflict-free. With GEMGEM and IGI, you can buy and sell with complete confidence.

IGI Verification, a standard at GEMGEM’s international marketplace, goes beyond existing certifications. Certified items are authenticated for both the certificate and the jewelry, while uncertified items receive IGI attribution upon successful verification. Items that fail the IGI Verification process are promptly returned. Trust the global standard—trust IGI and GEMGEM—for an unparalleled jewelry buying experience.

A Simple Process

How It Works

Order Placement

The seller receives an order from the buyer, marking the beginning of a seamless transaction.

Testimonials

Why GEMGEM Exists

“We created GEMGEM to make buying luxury pre-owned jewelry safe, affordable, and stress-free. Every item is authenticated, and if you're not satisfied, you can relist it commission-free. It’s luxury shopping—with peace of mind built in.”

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F.A.Q. - Have Questions?

Here are some of the most commonly asked questions from buyers. if you don't see what you're looking for, visit the Help Center for more answers.

Help Center

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