Lab Grown Diamond Engagement Rings

Lab-grown diamond engagement rings at The Colored Stone Co. start from LKR 240,000 for a 0.5ct stone in 18K gold, rising to LKR 1,000,000+ for a 3ct stone. Every stone carries independent IGI or GIA certification, and every ring is made to order in our Colombo workshop.

Choose lab-grown for the same diamond — same hardness, same brilliance, same certification standard — at a fraction of the natural price. Looking for a natural stone instead? See our natural diamond engagement rings, or design a custom diamond ring. Browse the collection below.

Full pricing guide & FAQs+

How Buying Works

1

Message us with your budget and stone preference

Tell us what you're looking for over WhatsApp — no form, no account.

2

Confirm your design and ring size

We agree on the setting, metal, and size before we ask for a deposit.

3

Deposit

Sourcing a specific stone takes real time and effort, so we ask for a deposit before searching begins — it secures your order and starts the sourcing process. If we're unable to source a stone that matches your requirement, the deposit is refunded in full.

4

We source the stone and send certificate details

Diamonds are chosen by IGI/GIA certificate rather than physical sourcing, so this step is usually quick — we share graded stone options that fit your brief.

5

Production

Once the stone and design are confirmed, production begins in our Colombo workshop — allow 2–4 weeks.

6

Collect or ship

Collect in person in Colombo, or we arrange tracked, insured shipping if you're overseas.

We respond within hours.

If we're unable to source a stone that matches your requirement, your deposit is refunded in full.

Lab-grown diamond engagement ring prices in Sri Lanka

Stone Size Finished Ring (LKR)
0.5ct 240,000 – 385,000
1ct 320,000 – 630,000
1.5ct+ 410,000 – 1,005,000

Looking for a natural diamond instead? See our natural diamond engagement rings, starting from LKR 565,000 for a 0.5ct stone.

Frequently asked questions

How much does a lab-grown diamond engagement ring cost in Sri Lanka?

Lab-grown diamond rings range from LKR 240,000 (0.5ct) to LKR 1,000,000+ (1.5ct and above), depending on carat and setting.

Is a lab-grown diamond a real diamond?

Yes. A lab-grown diamond is chemically and physically identical to a mined diamond — the same carbon structure, the same hardness (Mohs 10), the same optical properties. IGI and GIA certify both using the same standards.

Should I choose natural or lab-grown?

If resale value and geological rarity matter to you, choose natural. If you want maximum size and quality for your budget and plan to wear the ring rather than sell it, lab-grown is the more rational choice at current prices.

Do you offer natural diamonds?

Yes — see our natural diamond engagement rings collection, starting from LKR 565,000 for a 0.5ct stone.

Need help choosing? Read our engagement ring guide, our lab-grown diamond rings guide, or our full price guide. New to the decision entirely? Start with our jewellery buying guide.

Have questions about a specific stone or setting? We're happy to help.

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Lab Grown Diamond Engagement Rings
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