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Oval|Lab Grown|IGI

1.80ct I SI1 Oval Lab Grown Diamond

ID • I/SI1 • IGI LG442066527

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG442066527

Diamond specifications and retailer prices

From £739 GBP
$990 USD
As of October 29, 2026
Save £1,776 GBP (71%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £3,851 GBP at MOH London · As of October 21, 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG442066527 or 442066527. Listed at 11 retailers as of October 29, 2026, with a 240% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
I
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle35.8°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG442066527
Dimensions9.47 × 6.83 × 4.34 mm
L/W Ratio1.39
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
9.47 mm6.83 mm1.80 ctI / SI1
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG442066527
Side View
Table 57.5%Crown 35.8°Girdle: STK-VTKPavilion 40.8°Culet: NoneDepth 63.5%

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: Oct 29
Current: £3,851 GBP|Low: £739 GBP|High: £3,877 GBP|Avg: £1,934 GBP|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 18, 2026
Retailer 6£739 GBP
Retailer 5£1,156 GBP
Retailer 9£1,295 GBP
Retailer 7£1,341 GBP
Retailer 10£1,341 GBP
Retailer 11£1,470 GBP
Retailer 4£1,487 GBP
Retailer 12£1,817 GBP
Retailer 8£2,111 GBP
Retailer 2£2,372 GBP
Retailer 3£3,841 GBP
MOH London£3,851 GBP

12 data points across 12 retailers

11 retailers£739 GBP to £2,514 GBP

A
Cheapest Retailer
-
£739 GBP
$990 USD
A
Retailer 2
-
£1,156 GBP
$1,549 USD
View
B+
Retailer 3
-
£1,258 GBP
$1,686 USD
View
B+
Retailer 4
-
£1,295 GBP
$1,735 USD
View
Final sale: no returns
Retailer 5
-
£1,341 GBP
$1,797 USD
View
Price last confirmed 19 days ago
B+
Retailer 6
-
£1,341 GBP
$1,797 USD
View
B
Retailer 7
-
£1,470 GBP
$1,970 USD
View
B
Retailer 8
-
£2,111 GBP
$2,828 USD
View
B
Retailer 9
-
£2,372 GBP
$3,178 USD
View
B
Retailer 10
-
£2,514 GBP
$3,369 USD
View
Most Expensive
MOH London
LG442066527 · Oct 21
£3,851 GBP
View
Price last confirmed 10 days ago
10 more retailers have this diamond
Prices start from £739 GBPSave up to £1,776 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
£739 GBP