Are you looking to buy a lab-grown loose diamond or engagement ring? Select from the thousands of certified diamonds in our collection. Lab-grown diamonds are chemically, physically, and optically identical to mined diamonds — available at 50–70% less than the cost of a naturally mined stone.
A 3-carat diamond is an exquisite choice for engagement rings and statement jewellery, offering a striking presence and brilliance.
Lab-grown diamonds are real diamonds created in a controlled laboratory environment rather than being formed deep within the Earth’s crust. They are physically, chemically, and optically identical to mined diamonds, making them an ethical and cost-effective alternative. Even expert gemologists cannot distinguish between lab-grown and earth-grown diamonds without specialised equipment.
The only difference between lab-grown and mined diamonds is their origin. While natural diamonds form under extreme pressure and heat over millions of years, lab-grown diamonds are produced using High Pressure High Temperature (HPHT) or Chemical Vapour Deposition (CVD) methods in a controlled setting.
Lab-grown diamonds are typically 30 to 50 per cent more affordable than mined diamonds, allowing you to choose a larger stone within your budget without compromising on quality.
All Reve Diamonds’ lab-grown diamonds are independently certified, with most graded by IGI or GIA, two of the most respected diamond certification bodies.
If you need help selecting your perfect 3-carat lab-grown diamond, contact us today on 020 35852295 or chat with us now.
A 3-carat lab-grown diamond can cost anywhere between £2,500 and £20,000, depending on the 4 Cs (Carat, Cut, Colour, and Clarity).
A 3-carat diamond weight 0.6 grams or 600 milligrams.
3-carat diamonds vary in size, as carat is a measure of weight rather than dimension. Below is a range of dimensions for a 3-carat diamond:
| Measurement | Low | High | Median |
|---|---|---|---|
| Length (mm) | 8.5 | 12.5 | 9.8 |
| Width (mm) | 8.3 | 11.2 | 9.5 |
| Depth (mm) | 4.9 | 7.5 | 6.5 |
| Length-to-Width Ratio | 1.0 | 1.5 | 1.2 |
