Choosing a lab-grown diamond for your engagement ring is one of the most considered decisions you will make. You have done the research. You understand what these stones are. And at some point in that process, a question has likely come up: does a lab-grown diamond hold its value?
Here is the direct answer: lab-grown diamonds do not currently hold the same resale value as natural diamonds on the secondary market. Most lab-grown diamonds resell for approximately 20 to 30 per cent of their original retail price, while natural diamonds typically return 30 to 50 per cent. That is the transparent answer.
What that number actually means, and whether it should influence your decision, is a more interesting question. This guide works through both.
In this blog
- What does “holding value” actually mean for a diamond?
- Do lab-grown diamonds hold their resale value?
- How does this compare to natural diamonds?
- The number that actually matters: what you save at purchase
- Is a diamond a financial investment? The honest perspective
- Frequently asked questions
What does “holding value” actually mean for a diamond?
When most people ask whether a diamond holds its value, they are asking one of two things: will this stone appreciate over time, or could it be sold for a reasonable return if the circumstances required it?
For almost every diamond buyer, lab-grown or natural, the realistic answer to both questions is the same. Diamonds are not financial instruments in the way that shares or property are. The secondary market for any diamond is limited. Most jewellers do not buy back stones. Resale platforms exist, but the buyers on them are seeking discounts relative to retail.
The concept of a diamond as a sound financial investment has always been more marketing narrative than market reality. Neither category of diamond has ever performed as a reliable, liquid asset for the average buyer.
Your engagement ring is not a portfolio holding. It is a piece you will wear every day of your life. That is precisely what makes it valuable.
Do lab-grown diamonds hold their resale value?
Currently, a lab-grown diamond resells for approximately 20 to 30 per cent of its original retail price on the secondary market. This is lower than natural diamonds, and it is worth understanding why.
Lab-grown diamonds are produced using one of two advanced processes: Chemical Vapour Deposition (CVD) or High Pressure High Temperature (HPHT). As those processes become more efficient, the cost of producing a lab-grown diamond continues to fall. A stone purchased today competes against new inventory entering the market at lower prices in the years ahead. There is no ceiling on the supply of lab-grown diamonds, and secondary market pricing reflects that directly.
This is not a flaw. It is simply the current market reality, and it is the same dynamic seen in many technology-led categories where production costs decline over time.
The stone itself does not change. Its brilliance, hardness, and certification remain exactly as they were the day it was set. What changes is the price of new stones around it.
For a deeper look at how lab-grown diamonds are made and what makes them chemically identical to mined stones, the guide What Is a Lab-Grown Diamond? is a useful starting point.
How does this compare to natural diamonds?
Natural diamonds typically resell for between 30 and 50 per cent of their retail price on the secondary market. That is a higher percentage than lab-grown. In practice, however, the comparison looks different once purchase price enters the picture.
| Lab-Grown Diamond | Natural Diamond | |
|---|---|---|
| Typical retail price (approx. 1.5ct oval, 18K gold) | $3,000–$6,000 AUD | $10,000–$18,000 AUD |
| Typical secondary market return (%) | 20–30% | 30–50% |
| Approximate resale amount | $600–$1,800 AUD | $3,000–$9,000 AUD |
| Typical saving at point of purchase | $7,000–$12,000 AUD more affordable |
Figures are approximate ranges for illustrative purposes only. Resale values vary based on stone quality, certification, carat weight, and market conditions at time of sale.
The table shows that while natural diamonds return a higher percentage of retail price, the absolute dollar amount at stake is significantly lower for a lab-grown purchase from the outset. And the saving at point of purchase is a number that stays in your life regardless of what the secondary market does.
For a direct comparison of the stones themselves, this guide covers the key differences in detail: Lab-Grown vs Natural Diamonds: What You Need to Know.
The number that actually matters: what you save at purchase
A comparable lab-grown diamond costs 50 to 70 per cent less than its mined equivalent at the point of purchase. That difference is the most relevant financial number in this conversation.
If you choose a 1.5ct oval lab-grown diamond set in 18-carat gold, you might spend $3,000 to $6,000 AUD. The equivalent mined diamond in the same setting would typically cost $10,000 to $18,000 AUD or more. That difference, often $7,000 to $12,000 AUD, is money that does not leave your life. It might go toward your first home, your honeymoon, or simply remain in your savings. That is a meaningful financial outcome in itself.
Framing the conversation entirely around resale percentage, without accounting for what you paid, tells only part of the story. The buyer who spends $4,000 on a lab-grown diamond and receives $1,000 on resale has spent a net $3,000 on their ring. The buyer who spends $14,000 on a comparable mined diamond and receives $6,000 on resale has spent a net $8,000. The percentage recovery was lower for lab-grown. The total cost was considerably lower too.
You can find a full guide to engagement ring pricing in Australia here: How Much Does an Engagement Ring Cost in Australia? A Realistic 2026 Guide.
Is a diamond a financial investment? The honest perspective
The idea that a diamond is an investment has been a compelling piece of marketing narrative for decades. The reality has always been more nuanced.
Most luxury goods, including fine watches, art, and jewellery, can appreciate under very specific conditions: exceptional rarity, provenance, cultural significance, or concentrated collector demand. A standard engagement ring, mined or lab-grown, rarely meets those conditions in a way that produces reliable financial returns for the individual buyer. The investment case for any engagement ring should be held lightly.
What an engagement ring is, unambiguously, is something else. It marks the beginning of a committed life together. It sits on your finger through ordinary Tuesdays and extraordinary milestones. It is, in every meaningful sense, an heirloom: designed to be worn and cherished for a lifetime, and sometimes passed on beyond it. No secondary market valuation captures that.
A considered choice in a lab-grown diamond is still a considered investment. In craftsmanship. In a certified stone of genuine quality. In a piece that will journey with you through decades. That is what holds value. It is measured in a different currency entirely.
If you would like to understand more about what makes a lab-grown diamond worth choosing, the Lab-Grown Diamonds Complete Buyer’s Guide is a comprehensive place to continue.
Frequently asked questions
How much do lab-grown diamonds resell for in Australia?
Lab-grown diamonds currently resell for approximately 20 to 30 per cent of their original retail price on the secondary market. This figure varies based on the stone’s quality, carat weight, certification, and the platform used to sell. The secondary market for lab-grown diamonds is smaller than for natural diamonds, reflecting the fact that new certified stones are available at progressively lower prices as production costs continue to fall.
Do lab-grown diamonds lose value over time?
All diamonds, lab-grown and natural, tend to trade below their retail price on the secondary market from the point of purchase onward. For lab-grown diamonds, the decline has been more pronounced in recent years because the cost of producing new stones continues to fall. This reflects the economics of the production process, not any change in the physical properties of the diamond itself. The stone is as brilliant, as hard, and as certified on day one as it is on day one thousand.
Are lab-grown diamonds a good investment?
Lab-grown diamonds are not a reliable financial investment in the traditional sense, and it would be misleading to suggest otherwise. The same is broadly true of natural diamonds for the average buyer. The financial case for lab-grown diamonds rests on the significant saving at point of purchase, typically 50 to 70 per cent compared to an equivalent mined stone, rather than on future resale returns.
Should resale value affect my decision to buy a lab-grown diamond?
For most people, it does not once the full picture is considered. The primary financial advantage of a lab-grown diamond is the significant saving at the point of purchase. When you account for that upfront difference, the lower resale percentage becomes a secondary consideration. The more useful question is: what are you buying this ring for? If the answer is to wear it, cherish it, and carry it through a lifetime together, the secondary market is unlikely to be the deciding factor.
Will lab-grown diamond prices continue to fall?
Production costs for lab-grown diamonds have declined as the technology matures. Whether retail prices continue to fall, stabilise, or settle at a floor depends on factors including production volume, retailer pricing strategies, and market demand. What remains consistent is the quality of the stones themselves. Lab-grown diamonds are certified to the same internationally recognised standards as natural diamonds, graded on cut, colour, clarity, and carat weight by the same gemological laboratories.
Are lab-grown diamonds certified the same way as natural diamonds?
Yes. Lab-grown diamonds are graded and certified by internationally recognised gemological laboratories including IGI (International Gemological Institute) and GIA (Gemological Institute of America). The 4Cs apply in exactly the same way as for natural diamonds. At The Jewel Concierge, all lab-grown diamonds are certified to high standards of colour, clarity, and cut. For a full guide to what those certifications mean and which to look for, see IGI vs GIA: Which Diamond Certificate Matters for a Lab-Grown Diamond?
Every question you have about lab-grown diamonds is worth asking. Our Concierge Experience is designed for exactly this kind of thoughtful conversation: genuine expertise, no pressure, no script.
