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Oval|Lab Grown|IGI

1.80ct H SI1 Oval Lab Grown Diamond

ID • H/SI1 • IGI LG440012892

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG440012892

Diamond specifications and retailer prices

From £837 GBP
As of November 6, 2026
Save £3,390 GBP (80%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £4,227 GBP at MOH London · As of November 5, 2026
View at MOH London

About this 1.8ct lab-grown oval diamond

This 1.8ct 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 LG440012892 or 440012892. Listed at 12 retailers as of November 5, 2026, with prices from £837 to £4,227, a £3,390 spread on the same certified stone. MOH London lists it at £4,227. 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

1.80
Carat
H
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle31.5°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG440012892
Dimensions10.01 × 6.86 × 4.06 mm
L/W Ratio1.46
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
10.01 mm6.86 mm1.80 ctH / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG440012892
Side View
Table 62.0%Crown 31.5°Girdle: STK-THKPavilion 40.3°Culet: NoneDepth 59.2%

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: £4,227 GBP|Low: £837 GBP|High: £4,295 GBP|Avg: £2,115 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
Retailer 12
Retailer 13
Retailer 14
Retailer 15
November 6, 2026
Retailer 8£837 GBP
Retailer 10£1,279 GBP
Retailer 14£1,392 GBP
Retailer 15£1,432 GBP
Retailer 3£1,484 GBP
Retailer 11£1,484 GBP
Retailer 7£1,515 GBP
Retailer 4£1,610 GBP
Retailer 5£1,987 GBP
Retailer 2£2,081 GBP
Retailer 12£2,330 GBP
Retailer 9£2,559 GBP
Retailer 13£2,781 GBP
MOH London£4,227 GBP
Retailer 6£4,249 GBP

27 data points across 15 retailers

12 retailers£837 GBP to £4,227 GBP

A
Cheapest Retailer
-
£837 GBP
B+
Retailer 2
-
£1,279 GBP
View
B+
Retailer 3
-
£1,392 GBP
View
B+
Retailer 4
-
£1,432 GBP
View
Final sale: no returns
B+
Retailer 5
-
£1,484 GBP
View
Retailer 6
-
£1,484 GBP
View
Price last confirmed 25 days ago
B
Retailer 7
-
£1,610 GBP
View
B
Retailer 8
-
£2,081 GBP
View
B
Retailer 9
-
£2,330 GBP
View
B
Retailer 10
-
£2,559 GBP
View
B
Retailer 11
-
£2,781 GBP
View
Most Expensive
B
MOH London
LG440012892 · Nov 5
£4,227 GBP
View
11 more retailers have this diamond
Prices start from £837 GBPSave up to £3,390 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
1.80ct Oval
£837 GBP