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Round|Lab Grown|IGI

1.80ct I SI2 Round Lab Grown Diamond

EX • I/SI2 • IGI LG476186438

Shape and cutting style on the report: Round brilliant

Certificate IGI LG476186438

Diamond specifications and retailer prices

From £976 GBP
$1,300 USD
As of October 29, 2026
Save £2,695 GBP (73%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £3,671 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 I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG476186438 or 476186438. Listed at 10 retailers as of October 29, 2026, with prices from £976 to £3,671, a £2,695 spread on the same certified stone. MOH London lists it at £3,671. 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
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle32.4°
Pavilion angle41.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG476186438
Dimensions7.85 × 7.92 × 4.73 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
7.85 mm7.92 mm1.80 ctI / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG476186438
Side View
Table 62.0%Crown 32.4°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 59.9%

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: £3,671 GBP|Low: £825 GBP|High: £3,700 GBP|Avg: £1,750 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
October 29, 2026
Retailer 11£825 GBP
Retailer 4£976 GBP
Retailer 2£1,102 GBP
Retailer 7£1,235 GBP
Retailer 5£1,278 GBP
Retailer 8£1,278 GBP
Retailer 10£1,743 GBP
Retailer 6£2,015 GBP
Retailer 9£2,320 GBP
Retailer 3£2,862 GBP
MOH London£3,671 GBP

14 data points across 11 retailers

10 retailers£976 GBP to £3,671 GBP

A
Cheapest Retailer
-
£976 GBP
$1,300 USD
B+
Retailer 2
-
£1,102 GBP
$1,468 USD
View
B+
Retailer 3
-
£1,199 GBP
$1,597 USD
View
B+
Retailer 4
-
£1,235 GBP
$1,644 USD
View
Final sale: no returns
Retailer 5
-
£1,278 GBP
$1,702 USD
View
Price last confirmed 17 days ago
B+
Retailer 6
-
£1,278 GBP
$1,702 USD
View
B
Retailer 7
-
£2,015 GBP
$2,684 USD
View
B
Retailer 8
-
£2,320 GBP
$3,090 USD
View
B
Retailer 9
-
£2,396 GBP
$3,191 USD
View
Most Expensive
B
MOH London
LG476186438 · Oct 29
£3,671 GBP
View
9 more retailers have this diamond
Prices start from £976 GBPSave up to £2,695 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
£976 GBP