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The size the room notices. Three full carats, certified and hand-crafted in Brisbane, priced complete where a mined stone alone would cost more than the whole ring.
Every design, at three carats
Any Orlaithea ring can be made at three carats. These are the ones our couples choose most, priced complete with the certified stone.
A three carat centre stone in one of our signature settings sits between $6,400 and $7,500 complete. A mined diamond of equal grade would cost more than that before it was ever set.The Honest Arithmetic · E-F Colour, VS1, IGI Certified
Three carats is a decision best made in person.
On the hand, three carats reads differently on every finger. Book a consultation and compare carat weights side by side under the showroom lights, on her hand or yours.
Compare carats on the hand.
The difference between carat weights is one you should see, not read about. Free consultations at the Brisbane atelier or by video, worldwide.
Book Your Consultation3 carat lab-grown diamond engagement rings, hand-crafted in Brisbane
Three carats is where an engagement ring stops being noticed and starts being remembered. At nearly 9.5mm across in a round brilliant, it carries real presence on the hand, and for most of diamond history it belonged exclusively to serious wealth. Lab-grown diamonds rewrote that arithmetic. Every three carat ring we make holds a certified stone in E or F colour and VS1 clarity or better, graded by IGI or GIA, hand-crafted at our Edward Street workshop and priced complete: from $6,400 in our signature Alicia, with most three carat commissions landing between $6,400 and $7,500.
3 carat diamond size and price by shape
| Shape | Face-up size | From (complete) |
|---|---|---|
| Round | ≈ 9.4mm across | $6,400 |
| Oval | ≈ 12 × 8mm | $6,400 |
| Pear | ≈ 12.5 × 8mm | $6,400 |
| Emerald | ≈ 9.5 × 7.5mm | $6,400 |
| Marquise | ≈ 15 × 7.5mm | $6,400 |
Prices are the finished ring with a certified 3.00 carat E colour, VS1 clarity lab-grown diamond in 18ct gold. A 4.00 carat stone adds around $1,900, from $8,300 complete.
A stone this size shows everything, which is why cut quality decides whether three carats looks magnificent or merely large. We select ideal cut stones only, and you will see your exact diamond on video before it is set. Elongated shapes carry the weight most gracefully: a three carat oval stretches to roughly 12mm, a marquise to 15mm, while a round concentrates it into pure fire and an emerald cut wears it with restraint. Every design in our engagement collection can be made at three carats, and every one of them at four: a 4.00 carat stone adds around $1,900, from $8,300 complete. Beyond that, our 5 carat collection begins at $10,200.
Not sure three is the number? Our 2 carat collection starts at $5,400, and a 2.61 carat emerald cut is in stock and ready to ship today. The honest way to decide is on the hand: book a free consultation at the Brisbane atelier or by video, and compare two, three and four carats side by side.
Questions, answered
How big does a 3 carat diamond look?
A three carat round brilliant measures roughly 9.4mm across, unmistakable from across a room. Elongated shapes spread further: a three carat oval runs about 12mm long and a marquise close to 15mm, so they read even larger for the same weight.
How much does a 3 carat lab-grown diamond engagement ring cost?
At Orlaithea, three carat rings start at $6,400 complete, with a certified E colour, VS1 clarity stone in our signature Alicia setting. Most three carat commissions land between $6,400 and $7,500. A mined three carat stone of equal grade would cost more than the entire finished ring before it was ever set.
Can I go bigger than 3 carats?
Yes. Every design we make is available at 4.00 carats from $8,300 complete, and our 5 carat collection begins at $10,200. Larger and one-of-a-kind stones are sourced to order through our custom design service.
Is a 3 carat ring practical for everyday wear?
Yes, with the right setting. A well-made ring at this size sits low and secure, and our four claw settings are built for daily wear. We recommend insurance, and every ring ships with a full valuation to make that simple.