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Oval|Lab Grown|IGI

1.28ct F VS1 Oval Lab Grown Diamond

VG • F/VS1 • IGI LG841645040

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG841645040

Diamond specifications and retailer prices

From £253 GBP
As of November 4, 2026
Save £574 GBP (69%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £827 GBP at MOH London · As of November 5, 2026
View at MOH London

About this 1.28ct lab-grown oval diamond

This 1.28ct lab-grown oval sits in the one-and-a-quarter to one-and-a-half carat band, graded F colour (colourless) and VS1 clarity (very-slightly-included), with a very-good cut grade and certified by IGI LG841645040 or 841645040. Listed at 6 retailers as of November 4, 2026, with prices from £253 to £827, a £574 spread on the same certified stone. MOH London lists it at £827. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.28
Carat
F
Colour
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.3°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG841645040
Dimensions8.22 × 6.16 × 3.94 mm
L/W Ratio1.33
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.22 mm6.16 mm1.28 ctF / VS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG841645040
Side View
Table 61.0%Crown 36.3°Girdle: STK-THKPavilion 40.9°Culet: NoneDepth 64.0%

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: £827 GBP|Low: £250 GBP|High: £827 GBP|Avg: £448 GBP
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 5, 2026
Retailer 6£253 GBP
Retailer 3£290 GBP
Retailer 4£356 GBP
Retailer 2£381 GBP
Retailer 5£792 GBP
MOH London£827 GBP

9 data points across 6 retailers

6 retailers£253 GBP to £827 GBP

B+
Cheapest Retailer
-
£253 GBP
A
Retailer 2
-
£290 GBP
View
B+
Retailer 3
-
£356 GBP
View
B+
Retailer 4
-
£381 GBP
View
B
Retailer 5
-
£792 GBP
View
Most Expensive
B
MOH London
LG841645040 · Nov 5
£827 GBP
View
5 more retailers have this diamond
Prices start from £253 GBPSave up to £574 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 Oval
£253 GBP