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1.28ct D VVS1 Round Lab Grown Diamond

ID • D/VVS1 • IGI LG814634827

Shape and cutting style on the report: Round brilliant

Certificate IGI LG814634827

Diamond specifications and retailer prices

From £159 GBP
$213 USD
As of October 29, 2026
Save £474 GBP (75%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £633 GBP at NZ Jewellers · As of October 31, 2026
View at NZ Jewellers

About this 1.28ct lab-grown round diamond

This 1.28ct lab-grown round sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG814634827 or 814634827. Listed at 6 retailers as of October 29, 2026, with prices from £159 to £633, a £474 spread on the same certified stone. NZ Jewellers lists it at £633. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.28
Carat
D
Colour
VVS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG814634827
Dimensions6.95 × 6.92 × 4.30 mm
L/W Ratio1.00
Girdle conditionFaceted
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.95 mm6.92 mm1.28 ctD / VVS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG814634827
Side View
Table 58.0%Crown 36°Girdle: MediumPavilion 40.8°Culet: NoneDepth 62.0%

Caratlytics Score

How it works →
A+
Exceptional
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: Oct 29
Current: £633 GBP|Low: £159 GBP|High: £20,032 GBP|Avg: £3,466 GBP|-2.2%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 31, 2026
Retailer 5£159 GBP
Retailer 4£184 GBP
Retailer 2£197 GBP
Retailer 6£198 GBP
Retailer 3£380 GBP
NZ Jewellers£633 GBP
Retailer 8£662 GBP
Retailer 7£20,032 GBP

22 data points across 8 retailers

6 retailers£159 GBP to £633 GBP

A+
Cheapest Retailer
-
£159 GBP
$213 USD
A
Retailer 2
-
£184 GBP
$247 USD
View
A
Retailer 3
-
£197 GBP
$264 USD
View
A
Retailer 4
-
£198 GBP
$265 USD
View
A
Retailer 5
-
£380 GBP
$509 USD
View
Most Expensive
B+
NZ Jewellers
b6baf221-8c3b-4609-9db7-389ffe95f09a · Oct 31
£633 GBP
$848 USD
View
5 more retailers have this diamond
Prices start from £159 GBPSave up to £474 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 Round
£159 GBP