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Oval|Lab Grown|IGI

1.09ct H SI1 Oval Lab Grown Diamond

VG • H/SI1 • IGI LG436074457

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG436074457

Diamond specifications and retailer prices

From £463 GBP
As of November 5, 2026
Save £1,795 GBP (79%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £2,258 GBP at MOH London · As of November 5, 2026
View at MOH London

About this 1.09ct lab-grown oval diamond

This 1.09ct lab-grown oval sits in the classic one-carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG436074457 or 436074457. Listed at 12 retailers as of November 5, 2026, with prices from £463 to £2,258, a £1,795 spread on the same certified stone. MOH London lists it at £2,258. 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

1.09
Carat
H
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle30.8°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG436074457
Dimensions8.73 × 5.99 × 3.43 mm
L/W Ratio1.46
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
8.73 mm5.99 mm1.09 ctH / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG436074457
Side View
Table 59.0%Crown 30.8°Girdle: THN-MEDPavilion 40.8°Culet: NoneDepth 57.3%

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: Nov 5
Current: £2,258 GBP|Low: £445 GBP|High: £2,291 GBP|Avg: £984 GBP|-1.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 5, 2026
Retailer 8£463 GBP
Retailer 2£471 GBP
Retailer 11£518 GBP
Retailer 5£524 GBP
Retailer 9£575 GBP
Retailer 12£575 GBP
Retailer 6£669 GBP
Retailer 10£879 GBP
Retailer 3£900 GBP
Retailer 7£1,426 GBP
Retailer 4£1,538 GBP
Retailer 13£1,742 GBP
MOH London£2,258 GBP

20 data points across 13 retailers

12 retailers£463 GBP to £2,258 GBP

A
Cheapest Retailer
-
£463 GBP
A
Retailer 2
-
£471 GBP
View
A
Retailer 3
-
£518 GBP
View
Final sale: no returns
A
Retailer 4
-
£519 GBP
View
Retailer 5
-
£575 GBP
View
Price last confirmed 21 days ago
B+
Retailer 6
-
£575 GBP
View
A
Retailer 7
-
£669 GBP
View
B+
Retailer 8
-
£879 GBP
View
B
Retailer 9
-
£1,426 GBP
View
B
Retailer 10
-
£1,511 GBP
View
B
Retailer 11
-
£1,742 GBP
View
Most Expensive
B
MOH London
LG436074457 · Nov 5
£2,258 GBP
View
11 more retailers have this diamond
Prices start from £463 GBPSave up to £1,795 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
1.09ct Oval
£463 GBP