Lab Diamond Solitaire Rings

There’s something uniquely beautiful about a solitaire engagement ring—a single diamond, perfectly set, speaking volumes about your love. At Carat Rio, we offer a curated selection of lab diamond solitaire rings that combine modern sustainability with classic elegance.

Whether you're planning a proposal or upgrading your existing ring, our collection of solitaire engagement rings offers stunning choices crafted with exceptional precision and care.

Why Choose a Solitaire Engagement Ring?

A solitaire diamond ring focuses all the attention on one breathtaking center stone—flawless in brilliance, cut, and clarity. With lab-grown diamonds, you get all the sparkle of a natural diamond, but at a fraction of the cost—and without the ethical concerns.

Our solitaire diamond rings are created with precision, using lab-grown diamonds that are physically and chemically identical to mined diamonds. They’re eco-friendly, conflict-free, and 100% real diamonds.

1 Carat & 2 Carat Solitaire Engagement Rings

Whether you’re drawn to the 1 carat solitaire diamond ring for its perfect balance of elegance and simplicity, or you're ready to go bold with a 2 carat solitaire diamond ring, we have something just for you.

We offer solitaire diamond rings in:

  • White gold – classic and crisp
  • Yellow gold – warm and timeless
  • Rose gold – romantic and modern

Each diamond ring is handcrafted to celebrate your unique style and story.

Customize Your Solitaire Diamond Ring: Pave, Side Stones & Toi et Moi

Looking for something more than a classic solitaire? You can enhance your center diamond with delicate details:

  • Pave diamond ring settings add extra sparkle with a band encrusted with tiny diamonds.
  • Pave engagement rings highlight the center stone while keeping the beauty of diamond rings.
  • Side stone engagement rings They’re perfect for adding a little extra sparkle while still keeping the focus on the center stone.
  • For those who love unique pairings, our Toi et Moi rings (also known as Moi et Toi rings) feature two stones that symbolize two souls becoming one.

Solitaire Engagement Rings for Every Love Story

Our lab diamond solitaire engagement rings are not mass-produced. They are designed and made with care to reflect the individuality of your relationship. Each ring can be customized with your preferred shape—round, oval, cushion, emerald, pear, or marquise—and set in your metal of choice (Silver, Gold and Platinum).

Whether it’s a solitaire ring with diamonds on the band or a clean, simple band that lets the center stone shine, you can find a design that feels like it was made just for you.

Shop Lab Diamond Solitaire Rings with Confidence From Carat Rio

When you shop with Carat Rio, you’re not just buying a ring—you’re investing in craftsmanship, ethics, and style that lasts a lifetime. Our collection is perfect for:

  • Proposals and engagements
  • Wedding day jewelry
  • Anniversary gifts
  • Personal milestones

With certified lab-grown diamonds, transparent pricing, and worldwide shipping, finding your perfect solitaire ring has never been easier.

Explore Our Collection Today

Ready to find lab grown diamond engagement rings that match your love story?

Explore our collection of solitaire engagement rings, pave diamond rings, and toi et moi engagement rings—crafted with intention, beauty, and sustainability.

Which Wedding Rings Pair Best with Solitaire Engagement Rings?

If you're choosing a wedding band to match your solitaire engagement ring, consider a curved wedding ring or a lab diamond eternity ring for a perfect fit and look.

A curved wedding ring gently wraps around your solitaire ring, especially if it has a larger center stone. It gives a smooth, seamless look while highlighting the center diamond.

A lab diamond eternity ring adds sparkle all the way around the band and symbolizes forever love. It's a popular match with solitaire diamond rings and creates a balanced, elegant bridal set.