Shop 2.5 Lab Grown Diamond Ring Designs

The 2.5 lab grown diamond ring range offers carat weight that feels substantial without becoming oversized. It's a strong fit for engagement rings, milestone gifts, or everyday wear that still carries presence. Solitaire Jewellery selects each stone based on cut, colour and certified grading, with all rings reviewed and finished locally in Australia.

These lab grown diamonds are physically and chemically identical to mined diamonds. The difference lies in their origin and the consistency in pricing. For buyers seeking value and transparency, this collection delivers clarity from start to finish.

Browse the full lab grown diamond category or explore lab grown diamond rings for more size and shape options.

A Smart Carat Choice

The 2.5 carat size hits a practical sweet spot. It has a noticeable surface area without becoming difficult to wear or style. For those after a standout engagement piece, Solitaire offers a wide selection of engagement rings featuring 2.5ct diamonds in timeless shapes and secure settings.

The same size works equally well in custom statement rings or more streamlined profiles like signet rings, especially when paired with platinum or white gold.

Ring Settings and Diamond Shapes

Solitaire’s 2.5ct collection includes settings in yellow gold, rose gold, white gold and platinum. Shapes range from round and oval to pear, radiant and emerald cuts. Each piece is made to reflect quality and wearability without excess.

Explore the full rings category or narrow your options in our diamond rings range. For stackable options, visit the page for stackable rings to layer styles that work together.

Certified Diamonds with Full Transparency

All 2.5 lab grown diamond rings from Solitaire Jewellery come with IGI or GIA certification. These diamonds are lab grown under strict conditions that allow for consistency in colour, cut and clarity. The certification provides assurance on grading accuracy, while local production ensures quality control at the final stage.

You can review different carat and cut options within our lab grown diamond ring listings.

Customise Your Ring

Whether you’re updating a classic look or working on something new, Solitaire Jewellery offers full in-house support for resizing, metal changes, or setting adjustments. All orders are finished and inspected locally before dispatch, with secure packaging and tracking included.

Frequently Asked Questions

How much does a 2.5 carat lab grown diamond cost?

Prices vary based on cut, colour, clarity and certification. On average, a 2.5 lab grown diamond ring from Solitaire starts at a more accessible price point than mined alternatives, with consistent grading and quality.

How much does a 2.5 carat diamond weigh?

A 2.5 carat diamond weighs 0.5 grams. This size offers good finger coverage and visible brilliance without feeling too heavy for daily wear.

How big is a 2.5 carat diamond?

Size depends on cut, but a round 2.5 carat diamond typically measures around 8.8mm in diameter. Elongated cuts like oval or emerald may appear slightly larger face-up.

Is a 2.5 carat lab grown diamond a good choice for an engagement ring?

Yes. It delivers noticeable size with reliable grading. Many buyers choose it for its balance between luxury and practicality.

Do 2.5ct lab grown diamonds look different from natural ones?

No. They are chemically and optically the same. Lab grown diamonds show the same fire, sparkle and structure as mined stones, and come with independent certification.