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Oval|Lab Grown|IGI

1.28ct E VS1 Oval Lab Grown Diamond

ID • E/VS1 • IGI LG705550395

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG705550395

Diamond specifications and retailer prices

From £327 GBP
$435 USD
As of October 28, 2026
Save £612 GBP (65%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £939 GBP at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

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 E colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG705550395 or 705550395. Listed at 7 retailers as of October 28, 2026, with prices from £327 to £939, a £612 spread on the same certified stone. Brilliant Earth lists it at £939. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.28
Carat
E
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle32.3°
Pavilion angle40°
OriginLab Grown
Grading LabIGI
CertificateIGI LG705550395
Dimensions9.04 × 6.11 × 3.68 mm
L/W Ratio1.48
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.04 mm6.11 mm1.28 ctE / VS1
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG705550395
Side View
Table 58.0%Crown 32.3°Girdle: THN-STKPavilion 40°Culet: NoneDepth 60.2%

Caratlytics Score

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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: Oct 28
Current: £345 GBP|Low: £318 GBP|High: £892 GBP|Avg: £478 GBP|+5.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 29, 2026
Retailer 7£327 GBP
Retailer 1£345 GBP
Retailer 3£350 GBP
Retailer 5£361 GBP
Retailer 2£462 GBP
Retailer 6£646 GBP
Retailer 4£886 GBP

17 data points across 7 retailers

7 retailers£327 GBP to £939 GBP

A
Cheapest Retailer
-
£327 GBP
$435 USD
A
Retailer 2
-
£345 GBP
View
A
Retailer 3
-
£361 GBP
$481 USD
View
B+
Retailer 4
-
£462 GBP
$615 USD
View
B
Retailer 5
-
£646 GBP
$860 USD
View
B
Retailer 6
-
£886 GBP
View
Most Expensive
B
Brilliant Earth
21756955A · Oct 29
£939 GBP
$1,250 USD
View
6 more retailers have this diamond
Prices start from £327 GBPSave up to £612 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
£327 GBP