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Radiant|Lab Grown|IGI

1.28ct G VVS2 Radiant Lab Grown Diamond

EX • G/VVS2 • IGI LG618411378

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG618411378

Diamond specifications and retailer prices

From £130 GBP
As of November 4, 2026
Save £716 GBP (85%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £847 GBP at Flawless Fine Jewelry · As of November 4, 2026
View at Flawless Fine Jewelry

About this 1.28ct lab-grown radiant diamond

This 1.28ct lab-grown radiant sits in the one-and-a-quarter to one-and-a-half carat band, graded G colour (near-colourless) and VVS2 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG618411378 or 618411378. Listed at 22 retailers as of November 4, 2026, with prices from £130 to £847, a £716 spread on the same certified stone. Flawless Fine Jewelry lists it at £847. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.28
Carat
G
Colour
VVS2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.1°
Pavilion angle34.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG618411378
Dimensions7.92 × 5.22 × 3.47 mm
L/W Ratio1.52
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.92 mm5.22 mm1.28 ctG / VVS2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG618411378
Side View
Table 66.0%Crown 41.1°Girdle: Slightly ThickPavilion 34.7°Culet: NoneDepth 66.5%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: £847 GBP|Low: £119 GBP|High: £847 GBP|Avg: £371 GBP
Flawless Fine Jewelry
Retailer 2
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Retailer 21
November 4, 2026
Retailer 6£130 GBP
Retailer 13£145 GBP
Retailer 21£151 GBP
Retailer 14£153 GBP
Retailer 10£162 GBP
Retailer 20£272 GBP
Retailer 17£279 GBP
Retailer 2£287 GBP
Retailer 7£287 GBP
Retailer 3£369 GBP
Retailer 16£395 GBP
Retailer 4£403 GBP
Retailer 15£419 GBP
Retailer 11£487 GBP
Retailer 12£496 GBP
Retailer 19£520 GBP
Retailer 9£560 GBP
Retailer 5£593 GBP
Retailer 18£756 GBP
Retailer 8£827 GBP
Flawless Fine Jewelry£847 GBP

35 data points across 21 retailers

22 retailers£130 GBP to £847 GBP

A
Cheapest Retailer
-
£130 GBP
A
Retailer 2
-
£145 GBP
View
Final sale: no returns
A
Retailer 3
-
£151 GBP
View
Retailer 4
-
£153 GBP
View
Price last confirmed 10 days ago
A
Retailer 5
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£162 GBP
View
A
Retailer 6
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£272 GBP
View
A
Retailer 7
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£279 GBP
View
A
Retailer 8
-
£287 GBP
View
A
Retailer 9
-
£287 GBP
View
B+
Retailer 10
-
£369 GBP
View
B+
Retailer 11
-
£395 GBP
View
B+
Retailer 12
-
£403 GBP
View
B+
Retailer 13
-
£419 GBP
View
Retailer 14
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£487 GBP
View
Price last confirmed 8 days ago
Retailer 15
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£496 GBP
View
Price last confirmed 14 days ago
B
Retailer 16
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£520 GBP
View
B
Retailer 17
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£560 GBP
View
B+
Retailer 18
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£562 GBP
View
B
Retailer 19
-
£593 GBP
View
B
Retailer 20
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£756 GBP
View
B
Retailer 21
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£827 GBP
View
Most Expensive
B
Flawless Fine Jewelry
4D3D5D2AF · Nov 4
£847 GBP
View
21 more retailers have this diamond
Prices start from £130 GBPSave up to £716 GBP

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.28ct Radiant
£130 GBP