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1.80ct J SI2 Round Lab Grown Diamond

EX • J/SI2 • IGI LG500151236

Shape and cutting style on the report: Round brilliant

Certificate IGI LG500151236

Diamond specifications and retailer prices

From £940 GBP
$1,252 USD
As of October 29, 2026
Save £2,583 GBP (73%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £3,523 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1.8ct lab-grown round diamond

This 1.8ct lab-grown round sits in the one-and-a-half to two carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG500151236 or 500151236. Listed at 10 retailers as of October 29, 2026, with prices from £940 to £3,523, a £2,583 spread on the same certified stone. MOH London lists it at £3,523. 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
J
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.1°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG500151236
Dimensions7.74 × 7.66 × 4.85 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.74 mm7.66 mm1.80 ctJ / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG500151236
Side View
Table 55.0%Crown 36.1°Girdle: MED-STKPavilion 40.2°Culet: NoneDepth 63.0%

Caratlytics Score

How it works →
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 29
Current: £3,523 GBP|Low: £752 GBP|High: £3,552 GBP|Avg: £1,854 GBP|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 18, 2026
Retailer 2£961 GBP
Retailer 4£1,053 GBP
Retailer 6£1,520 GBP
Retailer 7£1,587 GBP
Retailer 3£1,729 GBP
Retailer 5£2,033 GBP
Retailer 8£2,439 GBP
MOH London£3,523 GBP

9 data points across 8 retailers

10 retailers£940 GBP to £3,523 GBP

A
Cheapest Retailer
-
£940 GBP
$1,252 USD
A
Retailer 2
-
£961 GBP
$1,280 USD
View
A
Retailer 3
-
£1,023 GBP
$1,362 USD
View
A
Retailer 4
-
£1,053 GBP
$1,402 USD
View
Final sale: no returns
B+
Retailer 5
-
£1,090 GBP
$1,452 USD
View
Retailer 6
-
£1,090 GBP
$1,452 USD
View
Price last confirmed 17 days ago
B
Retailer 7
-
£1,729 GBP
$2,302 USD
View
B
Retailer 8
-
£2,033 GBP
$2,707 USD
View
B
Retailer 9
-
£2,045 GBP
$2,723 USD
View
Most Expensive
B
MOH London
LG500151236 · Oct 29
£3,523 GBP
View
9 more retailers have this diamond
Prices start from £940 GBPSave up to £2,583 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 Round
£940 GBP