Lab-Grown Diamond vs Natural Diamond vs Moissanite – Complete Buying Guide (Australia)
Lab-Grown Diamond vs Natural Diamond vs Moissanite
Compare beauty, sparkle, durability, certification, value and everyday wear so you can confidently choose the right stone for an engagement ring or fine jewellery.
Grown
Three Beautiful Choices. Three Different Priorities.
Lab-Grown and natural diamonds are both real diamonds. Moissanite is a separate gemstone with a different composition and optical character.
Which Stone Is Right for You?
The best choice depends on whether you prioritise real-diamond value, natural rarity or the lowest entry price.
Lab-Grown Diamond
A real diamond with the same chemical, physical and optical properties as a mined diamond, created in a controlled environment.
Natural Diamond
A real diamond formed beneath the earth and valued for geological rarity, tradition and natural origin.
Moissanite
A separate gemstone made from silicon carbide, known for strong rainbow-like fire and a lower purchase price.
Complete Comparison
| Feature | Lab-Grown Diamond | Natural Diamond | Moissanite |
|---|---|---|---|
| Is it a real diamond? | Yes | Yes | No, it is a different gemstone |
| Composition | Carbon | Carbon | Silicon carbide |
| Hardness | 10 on Mohs scale | 10 on Mohs scale | Approximately 9.25 on Mohs scale |
| Sparkle | Classic diamond brilliance | Classic diamond brilliance | More rainbow-like fire |
| Durability | Excellent for daily wear | Excellent for daily wear | Very durable, but softer than diamond |
| Certification | Often IGI certified | Often GIA, IGI or similarly certified | Assessed differently from diamonds |
| Relative price | Strong value for real-diamond size and quality | Usually highest due to rarity and supply | Usually the most affordable |
| Best for | Modern engagement rings and fine jewellery | Rarity-focused and traditional buyers | Budget-focused buyers seeking a diamond alternative |
What Is a Lab-Grown Diamond?
A Lab-Grown diamond is created using advanced technology that reproduces the conditions in which diamonds form. Its crystal structure is carbon, just like a mined diamond.
When cut to a high standard, Lab-Grown diamonds display the same classic brilliance, scintillation and durability expected from diamonds. They are especially popular with buyers who want a larger carat size or higher colour and clarity within a defined budget.
Read the Lab-Grown Diamond GuideWhy Buyers Choose Lab-Grown
What Is a Natural Diamond?
A natural diamond forms beneath the earth over a very long geological period and is recovered through mining. Its composition and hardness are the same as those of a Lab-Grown diamond.
Natural diamonds are often chosen by buyers who place particular importance on geological rarity, mined origin, long-standing tradition or the symbolism attached to a naturally formed stone.
Why Buyers Choose Natural
What Is Moissanite?
Moissanite is not a diamond. It is a separate gemstone made from silicon carbide and has its own optical and physical properties.
It is durable and often displays stronger rainbow-coloured flashes than a diamond. Some buyers love this distinctive fire, while others prefer the more familiar balance of white brilliance and coloured dispersion seen in diamonds.
Read Moissanite vs Lab-Grown DiamondsWhy Buyers Choose Moissanite
How Does the Sparkle Compare?
Lab-Grown Diamond
Displays classic diamond brilliance, fire and scintillation. Its appearance depends heavily on cut quality and proportions.
Natural Diamond
Displays the same classic diamond optical character as a Lab-Grown diamond when shape, cut and grading are comparable.
Moissanite
Often produces more colourful rainbow flashes. This can appear lively and dramatic, particularly in larger stones.
Durability and Hardness
Lab-Grown and natural diamonds both rank 10 on the Mohs hardness scale. This makes them exceptionally resistant to scratching and highly suitable for engagement rings worn every day.
Moissanite ranks approximately 9.25, making it a durable gemstone, although it is not as hard as diamond.
Which Option Offers the Best Value?
Lab-Grown Diamond Value
Often allows buyers to choose a larger carat weight, stronger colour or higher clarity while still receiving a real diamond.
Natural Diamond Value
The higher purchase price reflects natural rarity, mining, supply and traditional market positioning.
Moissanite Value
Usually has the lowest entry price, but should be viewed as a separate gemstone rather than a lower-cost diamond.
Who Should Choose What?
Choose Lab-Grown If
Choose Natural If
Choose Moissanite If
Myth vs Fact
What Australian Buyers Should Check
Before purchasing an engagement ring or fine-jewellery piece, review the stone type, certification, ring size, precious metal, production timeframe, delivery policy, resizing terms and after-sales support.
For Lab-Grown centre stones, an independent grading report can help confirm carat weight, colour, clarity, measurements, polish, symmetry and origin.
Australian Buying Checklist
Helpful Diamond Guides
Learn About the 4Cs
Understand cut, colour, clarity and carat before comparing stones.
IGI Certification
Learn what an independent diamond grading report tells you.
Engagement Ring Guide
Choose the right shape, setting, metal, ring size and budget.
Diamond Shapes Guide
Compare round, oval, pear, emerald, marquise and other silhouettes.
Jewellery Care Guide
Protect your ring and keep its brilliance looking beautiful.
Precious Metal Guide
Compare white, yellow and rose gold for everyday jewellery.
Frequently Asked Questions
Is a Lab-Grown diamond a real diamond?
Yes. A Lab-Grown diamond is a real diamond with the same chemical, physical and optical properties as a mined diamond.
Is moissanite a diamond?
No. Moissanite is a different gemstone made from silicon carbide.
Which sparkles more: Lab-Grown diamond or moissanite?
Moissanite often displays stronger rainbow-like fire, while Lab-Grown diamonds show the classic brilliance and scintillation associated with diamonds.
Which is better for everyday wear?
Lab-Grown and natural diamonds are both exceptionally hard and well suited to daily wear. Moissanite is also durable but is slightly softer than diamond.
Do Lab-Grown diamonds pass a diamond tester?
Lab-Grown diamonds are real diamonds and generally test as diamond with standard thermal testing. Specialist equipment may be required to determine growth origin.
Which is best for an engagement ring?
Lab-Grown and natural diamonds are both excellent engagement-ring choices. Lab-Grown diamonds are particularly attractive to buyers seeking real-diamond beauty and strong value.
Can jewellers tell Lab-Grown and natural diamonds apart?
They can look visually identical when similarly cut and graded. Specialist testing and grading information are used to identify growth origin.
Can moissanite become cloudy?
Moissanite does not usually become permanently cloudy, although oils, soap and residue can reduce sparkle until the stone is cleaned.
Are Pear Jewels Lab-Grown diamonds IGI certified?
Many Pear Jewels Lab-Grown diamond centre stones are IGI certified where applicable. Check the individual product information for certification details.
Does Pear Jewels sell moissanite?
Pear Jewels specialises in premium Lab-Grown diamond jewellery rather than focusing on moissanite jewellery.
Are Lab-Grown diamonds as hard as natural diamonds?
Yes. Both rank 10 on the Mohs hardness scale.
Is moissanite cheaper than a Lab-Grown diamond?
Moissanite is generally less expensive, but it is a different gemstone rather than a diamond.
Choose a Real Diamond with Modern Value
Explore Pear Jewels Lab-Grown diamond engagement rings, wedding bands and fine jewellery crafted for timeless beauty and everyday elegance.
Email: info@pearjewels.com.au