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Radiant|Lab Grown|IGI

1.50ct I SI1 Radiant Lab Grown Diamond

ID • I/SI1 • IGI LG512224123

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

Certificate IGI LG512224123

Diamond specifications and retailer prices

From $1,210 AUD
$850 USD
As of October 31, 2026
Save $5,666 AUD (82%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $6,876 AUD at MOH London · As of November 1, 2026
View at MOH London

About this 1.5ct lab-grown radiant diamond

This 1.5ct lab-grown radiant sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG512224123 or 512224123. Listed at 11 retailers as of October 31, 2026, with prices from $1,210 to $6,876, a $5,666 spread on the same certified stone. MOH London lists it at $6,876. 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

1.50
Carat
I
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle47.1°
Pavilion angle32.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG512224123
Dimensions8.32 × 5.59 × 3.63 mm
L/W Ratio1.49
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
8.32 mm5.59 mm1.50 ctI / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG512224123
Side View
Table 67.5%Crown 47.1°Girdle: STK-THKPavilion 32.4°Culet: NoneDepth 64.9%

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 31
Current: $6,876 AUD|Low: $1,210 AUD|High: $6,968 AUD|Avg: $3,072 AUD|-1.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 1, 2026
Retailer 5$1,210 AUD
Retailer 6$1,845 AUD
Retailer 10$2,007 AUD
Retailer 7$2,140 AUD
Retailer 11$2,140 AUD
Retailer 12$2,385 AUD
Retailer 4$2,950 AUD
Retailer 2$3,055 AUD
Retailer 8$3,387 AUD
Retailer 3$3,989 AUD
Retailer 9$4,010 AUD
MOH London$6,876 AUD

22 data points across 12 retailers

11 retailers$1,210 AUD to $6,876 AUD

A
Cheapest Retailer
-
$1,210 AUD
$850 USD
B+
Retailer 2
-
$1,845 AUD
$1,296 USD
View
B+
Retailer 3
-
$2,007 AUD
$1,410 USD
View
Retailer 4
-
$2,140 AUD
$1,503 USD
View
Price last confirmed 20 days ago
B+
Retailer 5
-
$2,140 AUD
$1,503 USD
View
B+
Retailer 6
-
$2,385 AUD
$1,675 USD
View
B+
Retailer 7
-
$3,055 AUD
£1,690 GBP
View
B
Retailer 8
-
$3,387 AUD
$2,379 USD
View
B
Retailer 9
-
$3,989 AUD
$2,802 USD
View
B
Retailer 10
-
$4,010 AUD
$2,817 USD
View
Most Expensive
B
MOH London
LG512224123 · Nov 1
$6,876 AUD
£3,803 GBP
View
10 more retailers have this diamond
Prices start from $1,210 AUDSave up to $5,666 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
1.50ct Radiant
$1,210 AUD