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Radiant|Lab Grown|IGI

1.80ct H SI1 Radiant Lab Grown Diamond

ID • H/SI1 • IGI LG523265480

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG523265480

Diamond specifications and retailer prices

From £896 GBP
$1,200 USD
As of October 29, 2026
Save £3,361 GBP (79%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £4,257 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1.8ct lab-grown radiant diamond

This 1.8ct lab-grown radiant 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 LG523265480 or 523265480. Listed at 11 retailers as of October 29, 2026, with prices from £896 to £4,257, a £3,361 spread on the same certified stone. MOH London lists it at £4,257. 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
SymmetryExcellent
FluorescenceNone
Crown angle45.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG523265480
Dimensions7.88 × 5.98 × 4.10 mm
L/W Ratio1.32
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
7.88 mm5.98 mm1.80 ctH / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG523265480
Side View
Table 66.5%Crown 45.5°Girdle: STK-THKPavilionCulet: NoneDepth 68.6%

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: Oct 29
Current: £4,257 GBP|Low: £896 GBP|High: £4,291 GBP|Avg: £2,150 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
Retailer 13
October 29, 2026
Retailer 7£896 GBP
Retailer 6£1,278 GBP
Retailer 11£1,390 GBP
Retailer 12£1,431 GBP
Retailer 8£1,482 GBP
Retailer 5£1,514 GBP
Retailer 13£1,608 GBP
Retailer 3£1,984 GBP
Retailer 9£2,328 GBP
Retailer 2£2,556 GBP
Retailer 10£2,779 GBP
Retailer 4£4,244 GBP
MOH London£4,257 GBP

18 data points across 13 retailers

11 retailers£896 GBP to £4,257 GBP

A
Cheapest Retailer
-
£896 GBP
$1,200 USD
A
Retailer 2
-
£1,278 GBP
$1,712 USD
View
B+
Retailer 3
-
£1,390 GBP
$1,863 USD
View
B+
Retailer 4
-
£1,431 GBP
$1,917 USD
View
Final sale: no returns
Retailer 5
-
£1,482 GBP
$1,986 USD
View
Price last confirmed 19 days ago
B+
Retailer 6
-
£1,482 GBP
$1,986 USD
View
B+
Retailer 7
-
£1,608 GBP
$2,155 USD
View
B
Retailer 8
-
£2,328 GBP
$3,119 USD
View
B
Retailer 9
-
£2,556 GBP
$3,425 USD
View
B
Retailer 10
-
£2,779 GBP
$3,723 USD
View
Most Expensive
B
MOH London
LG523265480 · Oct 29
£4,257 GBP
View
10 more retailers have this diamond
Prices start from £896 GBPSave up to £3,361 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 Radiant
£896 GBP