Explore our curated selection of IGI-certified 4 Carat Lab Grown Diamonds—real diamonds, responsibly grown, and precision-graded for lasting value.
About 4 Carat Lab Grown Diamonds
4 Carat Lab Grown Diamonds – Magnificent Scale and Modern Luxury
A 4 carat lab grown diamond offers extraordinary presence, exceptional brilliance and remarkable visual impact. This premium carat weight is ideal for UK customers who seek a statement piece that reflects refined sophistication and contemporary elegance. With significant size and radiant clarity, 4 carat diamonds are perfect for high-end engagement rings, luxury jewellery settings and collectors who prioritise beauty and value.
Created using advanced CVD and HPHT technology, these diamonds share the same carbon structure, hardness and optical qualities as mined diamonds. The distinction lies in their origin — ethically grown above ground with a responsible and traceable production process. At Variation, every 4 carat diamond is IGI-certified and meticulously selected for brilliance, symmetry and purity.
What Is a 4 Carat Lab Grown Diamond?
A 4 carat diamond weighs 0.8 grams and delivers commanding scale with exceptional light performance. It is a popular choice among UK buyers seeking a luxurious centre stone that offers premium brilliance and a bold, memorable presence.
Key Characteristics
100% real diamonds with identical physical and chemical composition to mined stones
Large, visually striking appearance
Ideal for high-end jewellery and bespoke creations
IGI-certified for verified grading accuracy
Ethical, sustainable and fully traceable origin
A 4 carat lab grown diamond offers the perfect blend of prestige, brilliance and responsible luxury for UK customers.
Why Choose 4 Carat Lab Grown Diamonds from Variation?
Variation is trusted across the United Kingdom for its precision selection and commitment to transparency. Every 4 carat diamond undergoes a strict evaluation process, ensuring exceptional cut quality — the key factor behind maximum brilliance and fire.
Why UK Customers Prefer Variation
Premium IGI-certified diamonds
Top colour grades (D–F)
High clarity ranges (VVS1–VS2)
Conflict-free and ethical sourcing
Direct-from-manufacturer pricing and transparency
These qualities ensure you receive a truly exceptional diamond with superior beauty and long-term value.
Popular Shapes in 4 Carat Lab Grown Diamonds
Variation offers a wide selection of shapes, each crafted to maximise brilliance and visual harmony at the 4 carat size.
Best-Selling Shapes
Round Cut – Maximum brilliance with balanced proportions
Oval Cut – Graceful elongation and radiant sparkle
Princess Cut – Precise geometry and modern brilliance
Emerald Cut – Step-cut clarity and refined sophistication
Cushion Cut – Romantic shape with soft, glowing fire
Pear Cut – Elegant silhouette with striking brilliance
Radiant Cut – Bold fire with structured elegance
Marquise Cut – Dramatic length and impressive visibility
Heart Cut – Expressive shape with symbolic beauty
Hexagon & Trillion Cuts – Distinctive modern styles
Each shape is engineered to provide premium symmetry and optimal light performance.
IGI Certification – Trusted Assurance for UK Buyers
Every 4 carat lab grown diamond from Variation includes a detailed IGI certificate, ensuring clarity, measurement accuracy and authenticity.
Your IGI Certificate Verifies
Cut grade and overall proportions
Colour grade (D–F)
Clarity grade (VVS1–VS2)
Carat weight and exact measurements
Laser inscription for identification and security
This global certification gives UK buyers complete confidence when investing in a premium 4 carat diamond.
Ethical Creation and Sustainable Value
Variation diamonds are produced through sustainable, precision-focused processes that reduce environmental impact while ensuring exceptional beauty and purity.
Our Ethical Commitments
Zero mining and reduced ecological footprint
Fully traceable diamond growth
Lower carbon impact than mined diamonds
Inventory-free, responsible production
Transparent sourcing and value
UK customers can enjoy the elegance of a premium diamond with the assurance of responsible creation.
Ideal for Engagement Rings, Luxury Jewellery and Bespoke Designs
A 4 carat diamond offers extraordinary presence and brilliance, making it perfect for:
High-end engagement rings
Statement solitaire pendants
Premium stud earrings
Luxury necklaces and bracelets
Bespoke fine jewellery creations
Its commanding size and radiant sparkle make it a favourite among customers seeking bold, unforgettable luxury.
UK-Wide Delivery and Transparent Value
Variation provides secure, insured and trackable delivery throughout the United Kingdom, ensuring confidence and convenience.
You receive:
IGI-certified 4 carat lab grown diamond
Direct-from-manufacturer pricing
Clear, transparent value
Secure, insured UK-wide delivery
Authenticity documentation
Our transparent value structure ensures premium quality at fair, consistent pricing.
Prestige, Presence and Modern Brilliance
4 carat lab grown diamonds from Variation offer outstanding sparkle, exceptional size and ethically focused luxury. They are an ideal choice for UK customers seeking high-impact brilliance with certified quality and sustainable value.
Explore Variation’s 4 carat lab grown diamonds today and experience exceptional craftsmanship, radiant beauty and responsible luxury.
Frequently Asked Questions
Is a 4 carat lab grown diamond considered an extra-large or statement size? +
Yes. A 4 carat diamond is a true statement size with major visual impact. It offers
exceptional finger coverage and instantly stands out, making it ideal for bold engagement
rings and high-luxury jewellery pieces.
How large does a 4 carat diamond look compared to 2 or 3 carat diamonds? +
A 4 carat diamond is not just “one carat more” than a 3 carat — the face-up area and overall
presence increase significantly. Depending on shape and cut, a 4 carat stone can look
around 20–30% larger than a 3 carat and dramatically larger than a 2 carat diamond on the hand.
Are 4 carat lab grown diamonds much more affordable than mined diamonds of the same size? +
Yes. In larger sizes, the price gap becomes even more visible. A 4 carat lab grown diamond
can cost a fraction of a comparable mined diamond, allowing you to prioritise size, cut, and
quality without the extreme price of natural stones at this carat weight.
Do 4 carat lab grown diamonds sparkle as much as natural diamonds of the same size and grade? +
Absolutely. Lab grown diamonds have the same chemical composition and crystal structure as
mined diamonds. A well-cut 4 carat lab grown diamond will deliver the same brilliance, fire,
and scintillation as a natural diamond of identical specifications.
Which color and clarity grades are recommended for a 4 carat diamond? +
In a 4 carat size, inclusions and color are easier to see. Many buyers prefer
D–F color and VVS1–VS1 clarity to keep the diamond looking bright and clean.
However, an excellent or very good cut is essential for maximising light performance and beauty.
Are 4 carat lab grown diamonds certified by IGI or GIA? +
Yes. 4 carat lab grown diamonds typically come with certification from respected gemological
laboratories such as IGI or GIA, with detailed grading reports covering the diamond’s 4Cs,
proportions, and growth method (CVD or HPHT).
Is a 4 carat diamond practical for everyday wear in an engagement ring? +
A 4 carat diamond can be worn daily, but the setting becomes very important.
Secure designs like strong prongs, bezel, or halo settings help protect the stone and
keep it stable, while ensuring it feels comfortable despite its larger size and height.
Which shapes look best in the 4 carat range for lab grown diamonds? +
Round, oval, emerald, radiant, and pear shapes are especially popular at 4 carats.
Ovals, pears, and marquise maximise apparent size and finger coverage, while round and emerald
cuts emphasise balance, symmetry, and either maximum brilliance or elegant step-cut reflections.
Is a 4 carat lab grown diamond a good choice for pendants and high jewellery pieces? +
Yes. A 4 carat solitaire makes an exceptional pendant or centre stone in high jewellery designs.
It offers dramatic presence and can be the focal point of a bespoke necklace, cocktail ring,
or red-carpet style piece.
Are there many options available in 4 carat lab grown diamonds? +
Yes. You can choose from multiple shapes (round, oval, emerald, radiant, cushion, pear,
marquise, fancy cuts), a wide range of color and clarity grades, and different growth methods,
allowing you to tailor the 4 carat diamond to your exact style and budget.
Shape Guide
4 Carat Lab Grown Diamonds by Shape
Explore 4 Carat Lab Grown Diamond shapes and compare brilliance, spread, and faceting styles to find the perfect silhouette for your preferences.
The most brilliant and iconic diamond shape with timeless appeal.
Elongated, elegant, and offers exceptional face-up size and sparkle.
Rounded edges and a romantic shape with captivating fire.
A step-cut classic known for its sleek lines and sophisticated presence.
A flattering teardrop outline that enhances finger length and elegance.
Intense sparkle with a modern silhouette featuring cropped corners.
A symmetrical square shape offering exceptional brilliance and precision.
Dramatic pointed ends and maximum surface area for striking finger coverage.
A romantic and symbolic shape with beautiful symmetry and presence.
A bold geometric silhouette perfect for modern, distinctive jewellery lovers.