Our marquise lab diamond engagement ring sets a 1.5 carat lab grown stone in solid gold, with a single claw-set stone on a plain polished band. Prices start from around £1,650.

• Centre stone: 1.5 carat marquise cut lab grown diamond
• Setting: a single claw-set stone on a plain polished band
• Metal: 9ct, 14ct or 18ct solid gold - yellow, white or rose, hallmarked
• Made to order: allow 10-14 days
• Brand: Qutahia Jewellery

What makes this marquise lab diamond engagement ring different

Most rings at this price are plated or set in low-purity alloy. This one is solid gold throughout, hallmarked, and built around a certified stone. The marquise outline was chosen because it carries weight visually - at 1.5 carat it reads larger than a round stone of the same weight. See the full diamond collection for other shapes and carat weights.

The Problem

You have probably found the same thing everyone else does when they start looking. A natural diamond at the size you actually want costs more than you planned, and the stones inside your budget look smaller in person than they did online. Most people end up choosing between the size they wanted and the price they can justify.

Why Solid Gold Changes Everything

This is where lab grown changes the arithmetic. The stone is diamond, not an imitation, and it wears exactly like a mined one. What changes is the price per carat, which is why buyers routinely move up a full carat without moving their budget. The setting is solid gold and hallmarked, so nothing about the ring is a shortcut. Every marquise lab diamond engagement ring we make is hallmarked and built to the same standard.

Picture This

Think about the first week of wearing it - the light catching it while typing, while driving, while doing nothing in particular. A 1.5 carat stone does that constantly. That is the difference between a ring that is admired once and one that is noticed every day. A marquise lab diamond engagement ring is the piece people remember.

Frequently Asked Questions

The questions below are the ones buyers ask most often before choosing a marquise lab diamond engagement ring.

How much is a 1.5 carat lab grown diamond engagement ring?

A 1.5 carat lab grown solitaire starts from around £1,400 in 9ct gold, £1,700 in 14ct and £1,930 in 18ct. Going from 1 carat to 1.5 carat adds roughly 27% to the price, not 50% - carat weight and price do not rise in step.

What is a marquise cut diamond?

A marquise is an elongated shape with pointed ends. It covers more finger than any other cut at the same carat weight, which is why it reads as the largest stone for the money.

How do I clean a lab grown diamond engagement ring?

Warm water, a few drops of washing-up liquid and a soft toothbrush are enough. Doing this once a month keeps the stone bright. Avoid chlorine and abrasive cleaners - the risk is to the gold setting rather than the stone.

Lab grown diamond or moissanite - which is better?

Moissanite is not a diamond; it is silicon carbide. It throws more colour and costs less, but its hardness is 9.25. A lab grown diamond is harder at 10 and is certified as a diamond.

Are lab grown diamonds acceptable for an engagement ring?

A lab grown engagement ring is no longer a minority choice in the UK. It is a common decision among younger buyers, largely because the same budget buys a noticeably larger stone.

Are lab grown diamonds good for engagement rings?

Yes. A lab grown diamond is chemically and physically identical to a mined diamond: pure carbon, 10 on the Mohs hardness scale. There is no durability difference for daily wear. The only differences are where it formed and what it costs.

Is a lab grown diamond a real diamond?

Yes. A lab grown diamond is a real diamond, not a simulant. Cubic zirconia and moissanite are different materials; a lab grown diamond is diamond itself, and is certified as such.