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Sparkle Sustainably

Buy and Sell Pre-Owned Lab-Grown Diamond and Moissanite Jewelry

Diamond
Tree
Security

Discover Conscious Luxury

A woman buying jewelry

Welcome to SparkAgain—the curated marketplace for pre-owned lab-grown diamond and moissanite jewelry. Here, every piece tells a story. Lab-grown diamonds are more affordable and environmentally friendly than mined stones, and by choosing pre-owned, you make your jewelry choice even more sustainable.

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Our Favorite Sparkles

Diamond ring marquise

€2,950/Lab-Diamond/7.5 CT/E/VS1

Diamond neclace emerald

€1,000/Lab-Diamond/2.75 CT/E/VS2

Diamond earrings

€1,500/Lab-Diamond/3.02 CT/E/VS1

How It Works

It's a diamond engagement ring.

Selling Made Simple

List your sparkles in minutes without upfront costs. Enjoy expert support, a secure selling process, and only pay a small fee when your piece finds a new home.

How to sell
It's a diamond ring

Find Your Unique Diamond

Explore our curated collection and discover one-of-a-kind, certified pieces with their own history and charm.

How to buy
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Seamless and Secure Transactions

Once you’ve found your match, pay securely, and enjoy trackable and insured shipping. Payment is safely held until your item is delivered and verified.

Buyer protection

Our Selections

Engagement Rings

Engagement Rings

Wedding Rings

Wedding Bands

Earrings

Earrings

Bracelets

Bracelets

Necklaces

Necklaces

Rings

Rings

Diamond

Others