The size once reserved for red carpets. Five full carats, certified and hand-crafted in Brisbane, at a price mined diamonds never allowed.
Any Orlaithea ring can be made at five carats. These are the ones our couples choose most, priced complete with the certified stone.
A five carat centre stone in one of our signature settings sits between $10,200 and $11,500 complete. A mined diamond of equal grade would cost several times that before it was ever set.The Honest Arithmetic · E-F Colour, VS1, IGI Certified

On the hand, five 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.
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 ConsultationFive carats does not ask for attention, it simply has it. At roughly 11mm across in a round brilliant, this is the weight that spent a century behind auction glass and velvet rope, priced for almost nobody. Lab-grown diamonds ended that. Every five 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 $10,200 in our signature Alicia, with most five carat commissions landing between $10,200 and $11,500. Prefer the very top of the scale? D colour, VVS2 stones begin at $13,200.
| Shape | Face-up size | From (complete) |
|---|---|---|
| Round | ≈ 11mm across | $10,200 |
| Oval | ≈ 14 × 9.5mm | $10,200 |
| Pear | ≈ 15 × 9.5mm | $10,200 |
| Emerald | ≈ 11.5 × 9mm | $10,200 |
| Marquise | ≈ 17.5 × 9mm | $10,200 |
Prices are the finished ring with a certified 5.00 carat E colour, VS1 clarity lab-grown diamond in 18ct gold. D colour, VVS2 stones from $13,200.
At five carats the stone is the ring, so we are uncompromising about what goes in it: ideal cut only, eye-clean always, and you will see your exact diamond on video before it is set. Shape decides the character. A five carat oval spreads to around 14mm, a marquise to nearly 18mm, a round holds all of it in fire, and an emerald cut carries it like architecture. Every design in our engagement collection can be made at this weight, in 18ct gold or platinum, delivered in around three weeks.
One is ready now: a 5.01 carat round solitaire, in stock at $9,800, ships this week. If five carats is more presence than the occasion needs, our 3 carat collection begins at $6,400, and anything larger or one-of-a-kind is sourced through our custom design service. To see what five carats truly looks like on the hand, book a free consultation at the Brisbane atelier or by video.
A five carat round brilliant measures roughly 11mm across, unmistakable from any distance. Elongated shapes spread further still: a five carat oval runs about 14mm long and a marquise close to 18mm, nearly the full width of a finger.
At Orlaithea, five carat rings start at $10,200 complete, with a certified E colour, VS1 clarity stone in our signature Alicia setting. D colour, VVS2 stones begin at $13,200. A mined five carat diamond of equal grade would cost several times the entire finished ring.
Right now, yes: a 5.01 carat round solitaire in platinum is in stock at $9,800 and ships this week. Made-to-order five carat rings are hand-crafted and delivered in around three weeks.
Yes. Six carat and larger stones are sourced to order through our custom design service, each certified and shown to you on video before a single claw is set. Timelines depend on the stone, and we will be honest about them.