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Round|Lab Grown|IGI

1.28ct G VVS1 Round Lab Grown Diamond

ID • G/VVS1 • IGI LG792617913

Shape and cutting style on the report: Round brilliant

Certificate IGI LG792617913

Diamond specifications and retailer prices

From £298 GBP
$400 USD
As of October 30, 2026
Save £728 GBP (71%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £1,026 GBP at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

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 G colour (near-colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG792617913 or 792617913. Listed at 7 retailers as of October 30, 2026, with prices from £298 to £1,026, a £728 spread on the same certified stone. Taylor and Hart lists it at £1,026. 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
VVS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG792617913
Dimensions6.96 × 6.98 × 4.31 mm
L/W Ratio1.00
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.96 mm6.98 mm1.28 ctG / VVS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG792617913
Side View
Table 58.0%Crown 35.5°Girdle: MediumPavilion 41.1°Culet: NoneDepth 61.8%

Caratlytics Score

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

Price History

Last verified: Oct 30
Current: £498 GBP|Low: £286 GBP|High: £1,026 GBP|Avg: £604 GBP|+35.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Taylor and Hart
November 1, 2026
Retailer 2£298 GBP
Retailer 4£422 GBP
Retailer 1£498 GBP
Retailer 3£499 GBP
Retailer 6£771 GBP
Retailer 5£838 GBP
Taylor and Hart£1,026 GBP

28 data points across 7 retailers

7 retailers£298 GBP to £1,026 GBP

A
Cheapest Retailer
-
£298 GBP
$400 USD
B+
Retailer 2
-
£422 GBP
$566 USD
View
B+
Retailer 3
-
£498 GBP
View
B+
Retailer 4
-
£499 GBP
$669 USD
View
B
Retailer 5
-
£771 GBP
$1,034 USD
View
Retailer 6
-
£838 GBP
View
Price last confirmed 18 days ago
Most Expensive
B
Taylor and Hart
23VUEE6 · Oct 31
£1,026 GBP
$1,377 USD
View
6 more retailers have this diamond
Prices start from £298 GBPSave up to £728 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
£298 GBP