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Oval|Lab Grown|IGI

1.81ct H SI1 Oval Lab Grown Diamond

ID • H/SI1 • IGI LG436046039

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG436046039

Diamond specifications and retailer prices

From £844 GBP
As of November 6, 2026
Save £3,406 GBP (80%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £4,250 GBP at MOH London · As of November 5, 2026
View at MOH London

About this 1.81ct lab-grown oval diamond

This 1.81ct lab-grown oval sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG436046039 or 436046039. Listed at 11 retailers as of November 5, 2026, with prices from £844 to £4,250, a £3,406 spread on the same certified stone. MOH London lists it at £4,250. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.81
Carat
H
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle34.9°
Pavilion angle41.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG436046039
Dimensions9.29 × 7.00 × 4.38 mm
L/W Ratio1.33
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
9.29 mm7.00 mm1.81 ctH / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG436046039
Side View
Table 59.5%Crown 34.9°Girdle: STK-THKPavilion 41.8°Culet: NoneDepth 62.6%

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 6
Current: £4,250 GBP|Low: £844 GBP|High: £4,318 GBP|Avg: £2,252 GBP|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 5, 2026
Retailer 2£844 GBP
Retailer 5£1,287 GBP
Retailer 8£1,440 GBP
Retailer 6£1,492 GBP
Retailer 3£1,520 GBP
Retailer 9£1,617 GBP
Retailer 10£1,996 GBP
Retailer 7£2,342 GBP
Retailer 4£2,572 GBP
MOH London£4,250 GBP
Retailer 11£4,271 GBP

16 data points across 11 retailers

11 retailers£844 GBP to £4,250 GBP

A
Cheapest Retailer
-
£844 GBP
B+
Retailer 2
-
£1,287 GBP
View
B+
Retailer 3
-
£1,399 GBP
View
B+
Retailer 4
-
£1,440 GBP
View
Final sale: no returns
Retailer 5
-
£1,492 GBP
View
Price last confirmed 25 days ago
B+
Retailer 6
-
£1,492 GBP
View
B
Retailer 7
-
£1,617 GBP
View
B
Retailer 8
-
£2,342 GBP
View
B
Retailer 9
-
£2,572 GBP
View
B
Retailer 10
-
£2,796 GBP
View
Most Expensive
B
MOH London
LG436046039 · Nov 5
£4,250 GBP
View
10 more retailers have this diamond
Prices start from £844 GBPSave up to £3,406 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
1.81ct Oval
£844 GBP