Are natural diamonds more valuable than lab-grown diamonds?

Natural diamonds are finite and each has a unique geological history. They generally enjoy stronger long-term demand in the secondary market than mass-produced lab-grown stones — though resale is never guaranteed. We exclusively offer natural diamonds for clients who value authenticity and rarity.

Do natural diamonds hold their value?

High-quality natural diamonds with respected laboratory grading tend to maintain demand better than lab-grown alternatives. Market conditions vary, and jewellery should be chosen first for beauty and meaning rather than as a financial investment.

Are your diamonds ethically sourced?

We partner with suppliers who meet the responsible sourcing standards we require, including conflict-free expectations associated with the Kimberley Process. We’re happy to discuss provenance during your appointment.

What certification do you recommend?

We recommend diamonds certified by leading laboratories such as the Gemological Institute of America (GIA). Significant stones we set are accompanied by independent certification, and we inspect each diamond in-house before recommending it.

Why do lab-grown diamonds cost less?

Lab-grown diamonds are produced in factories and can be made in volume. Their abundance means they typically carry less rarity and weaker secondary-market demand than natural diamonds of comparable appearance.

Can I view diamonds in person before deciding?

Yes — the best education is under the loupe. Book a private viewing at our Cottesloe showroom and we’ll compare options side by side for your engagement ring or fine jewellery design.

Education

The Diamond Experience

At Scagnetti, we exclusively use natural diamonds — unmatched beauty and lasting value in every piece, selected and set in our Cottesloe atelier.

Learn about the 4Cs

Understanding cut, colour, clarity and carat empowers exceptional choices — especially for engagement rings and heirloom jewellery.

The art of brilliance

Cut

Cut determines sparkle, brilliance and overall visual appeal. Our craftsmen select diamonds cut to optimise reflection and light return.

Excellent cut: exceptional brilliance, balanced proportions and symmetrical facets
Very good cut: outstanding brilliance with minimal light leakage

Why it matters: Cut has the greatest influence on how alive a diamond looks on the hand — often more than carat weight alone.

Purity and prestige

Colour

Colour grades describe how colourless a white diamond appears. We typically recommend stones in the colourless to near-colourless range for engagement rings.

D–F (colourless): rare, pristine appearance with maximum brilliance
G–H (near colourless): excellent beauty and value with a very subtle warm tint

Why it matters: A well-chosen colour grade elevates sophistication without unnecessary cost when balanced with cut and clarity.

The mark of quality

Clarity

Clarity refers to the absence of internal inclusions and external blemishes. Most inclusions are invisible to the naked eye — what matters is how the stone looks to you.

FL–IF: exceptionally rare, no visible inclusions
VVS1–VVS2: inclusions extremely difficult to see under magnification
VS1–VS2: minor inclusions typically unseen without magnification — strong quality and value

Why it matters: Good clarity preserves light return and beauty while remaining practical for everyday wear.

Presence with purpose

Carat

Carat measures weight, not face-up size. Two diamonds of equal carat can appear very different depending on cut and shape.

Balance carat with cut so presence doesn’t sacrifice sparkle
Larger stones increase in rarity — we’ll help you prioritise what you’ll notice most
Signature sizes can be curated to suit your hand and design

Why it matters: A thoughtfully chosen carat weight showcases refined luxury without compromising the qualities that make a diamond beautiful.

Cut determines sparkle, brilliance and overall visual appeal. Our craftsmen select diamonds cut to optimise reflection and light return.

Excellent cut: exceptional brilliance, balanced proportions and symmetrical facets
Very good cut: outstanding brilliance with minimal light leakage

Why it matters: Cut has the greatest influence on how alive a diamond looks on the hand — often more than carat weight alone.

Natural diamonds vs lab-grown

We honour the timeless elegance of natural diamonds. In a world of trends, they remain our choice for discerning buyers seeking authenticity and rarity.

Natural diamonds

Formed over billions of years — each stone one of a kind
Stronger long-term demand historically than mass-produced alternatives
Unique geological fingerprint and enduring prestige
Sourced through suppliers who meet the standards we require

Lab-grown diamonds

Created in controlled environments and produced in volume
Typically lower purchase price with weaker secondary-market demand
Chemically similar appearance, without natural rarity
Environmental and ethical impacts vary by producer

Jewellery marks milestones — engagements, anniversaries, births. We believe natural diamonds carry the weight and tradition worthy of these moments. Resale value is never guaranteed; choose first for beauty, meaning and craftsmanship.

Why natural diamonds at Scagnetti

Choosing a natural diamond is an investment in authentic luxury, enduring beauty and a story that can be passed down generations.

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Sustainability & materials

Our commitment

Luxury and responsibility are inseparable. From ethical sourcing expectations to in-house craftsmanship, every step is rooted in transparency and care.

Transparent Traceability

We work with trusted suppliers who meet the ethical and conflict-free standards we require. Kimberley Process certification is part of how the industry helps keep diamonds conflict-free — and we’ll walk you through provenance questions in your consultation.

Perth Mint Gold & Platinum

We craft in certified 18ct gold and platinum sourced through the Perth Mint — refined for purity and integrity, supporting local industry, and giving your piece a considered material provenance.

In-House Craftsmanship

From design sketch to final polish, every step is completed within our Cottesloe atelier — design, CAD, hand fabrication, diamond setting and finishing under one roof.

Certification & confidence

Significant diamonds are accompanied by independent certification from leading laboratories such as GIA, verifying the characteristics of your stone. We’ll walk you through your certificate line by line so you understand exactly what you own.

Every diamond we sell is natural and selected to meet our atelier standards. No lab-grown stones — no exceptions.

Expert diamond buying tips

Prioritise cut over carat

Size catches the eye; brilliance holds it. An excellent cut often looks more luxurious than a larger, poorly cut stone.

Balance colour and clarity

We help you choose a combination that looks exceptional to the naked eye — without overspending on grades you won’t see.

Prefer respected certification

We recommend diamonds graded by leading laboratories such as GIA. We’ll review your certificate line by line in the showroom.

Ask about fluorescence

Strong fluorescence can affect appearance in some stones. We’ll show you options under different lighting so you can decide with confidence.

Choose with purpose

Engagements, anniversaries and milestones deserve a guided process. Tell us what matters — rarity, size, symbolism — and we’ll match the diamond to your intent.

Frequently asked questions

Craft your dream ring

Bespoke engagement rings, handcrafted in Cottesloe.

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See diamonds in person

The best education is under the loupe. Book a private viewing at our Cottesloe showroom.

Book an Appointment Engagement rings