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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 $1,706 AUD
$1,200 USD
As of October 28, 2026
Save $6,404 AUD (79%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $8,110 AUD 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 28, 2026, with prices from $1,706 to $8,110, a $6,404 spread on the same certified stone. MOH London lists it at $8,110. 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 28
Current: $8,110 AUD|Low: $1,706 AUD|High: $8,175 AUD|Avg: $4,096 AUD|+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$1,706 AUD
Retailer 6$2,434 AUD
Retailer 11$2,649 AUD
Retailer 12$2,726 AUD
Retailer 8$2,824 AUD
Retailer 5$2,885 AUD
Retailer 13$3,064 AUD
Retailer 3$3,781 AUD
Retailer 9$4,435 AUD
Retailer 2$4,870 AUD
Retailer 10$5,294 AUD
Retailer 4$8,086 AUD
MOH London$8,110 AUD

18 data points across 13 retailers

11 retailers$1,706 AUD to $8,110 AUD

A
Cheapest Retailer
-
$1,706 AUD
$1,200 USD
A
Retailer 2
-
$2,434 AUD
$1,712 USD
View
B+
Retailer 3
-
$2,649 AUD
$1,863 USD
View
B+
Retailer 4
-
$2,726 AUD
$1,917 USD
View
Final sale: no returns
B+
Retailer 5
-
$2,824 AUD
$1,986 USD
View
Price last confirmed 16 days ago
B+
Retailer 6
-
$2,824 AUD
$1,986 USD
View
B+
Retailer 7
-
$3,064 AUD
$2,155 USD
View
B
Retailer 8
-
$4,435 AUD
$3,119 USD
View
B
Retailer 9
-
$4,870 AUD
$3,425 USD
View
B
Retailer 10
-
$5,294 AUD
$3,723 USD
View
Most Expensive
B
MOH London
LG523265480 · Oct 29
$8,110 AUD
£4,491 GBP
View
10 more retailers have this diamond
Prices start from $1,706 AUDSave up to $6,404 AUD

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
$1,706 AUD