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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 $2,129 NZD
$1,200 USD
As of October 31, 2026
Save $7,937 NZD (79%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $10,066 NZD at MOH London · As of November 1, 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 31, 2026, with prices from $2,129 to $10,066, a $7,937 spread on the same certified stone. MOH London lists it at $10,066. 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 31
Current: $10,066 NZD|Low: $2,129 NZD|High: $10,201 NZD|Avg: $5,109 NZD
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
November 1, 2026
Retailer 7$2,129 NZD
Retailer 6$3,038 NZD
Retailer 11$3,306 NZD
Retailer 12$3,401 NZD
Retailer 8$3,524 NZD
Retailer 5$3,599 NZD
Retailer 13$3,824 NZD
Retailer 3$4,718 NZD
Retailer 9$5,534 NZD
Retailer 2$6,077 NZD
Retailer 10$6,606 NZD
MOH London$10,066 NZD
Retailer 4$10,091 NZD

19 data points across 13 retailers

11 retailers$2,129 NZD to $10,066 NZD

A
Cheapest Retailer
-
$2,129 NZD
$1,200 USD
B+
Retailer 2
-
$3,038 NZD
$1,712 USD
View
B+
Retailer 3
-
$3,306 NZD
$1,863 USD
View
B+
Retailer 4
-
$3,401 NZD
$1,917 USD
View
Final sale: no returns
Retailer 5
-
$3,524 NZD
$1,986 USD
View
Price last confirmed 20 days ago
B+
Retailer 6
-
$3,524 NZD
$1,986 USD
View
B+
Retailer 7
-
$3,824 NZD
$2,155 USD
View
B
Retailer 8
-
$5,534 NZD
$3,119 USD
View
B
Retailer 9
-
$6,077 NZD
$3,425 USD
View
B
Retailer 10
-
$6,606 NZD
$3,723 USD
View
Most Expensive
B
MOH London
LG523265480 · Nov 1
$10,066 NZD
£4,467 GBP
View
10 more retailers have this diamond
Prices start from $2,129 NZDSave up to $7,937 NZD

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
$2,129 NZD