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Round|Lab Grown|IGI

1.50ct K SI1 Round Lab Grown Diamond

ID • K/SI1 • IGI LG492112355

Shape and cutting style on the report: Round brilliant

Certificate IGI LG492112355

Diamond specifications and retailer prices

From $1,334 AUD
As of November 5, 2026
Save $3,900 AUD (75%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $5,234 AUD at MOH London · As of November 5, 2026
View at MOH London

About this 1.5ct lab-grown round diamond

This 1.5ct lab-grown round sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG492112355 or 492112355. Listed at 9 retailers as of November 5, 2026, with prices from $1,334 to $5,234, a $3,900 spread on the same certified stone. MOH London lists it at $5,234. 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
K
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.8°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG492112355
Dimensions7.32 × 7.35 × 4.52 mm
L/W Ratio1.00
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
7.32 mm7.35 mm1.50 ctK / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG492112355
Side View
Table 55.5%Crown 35.8°GirdlePavilion 40.2°Culet: NoneDepth 61.6%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $5,234 AUD|Low: $1,281 AUD|High: $5,319 AUD|Avg: $2,617 AUD|-1.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 5, 2026
Retailer 4$1,334 AUD
Retailer 5$1,547 AUD
Retailer 7$1,547 AUD
Retailer 2$1,800 AUD
Retailer 8$2,280 AUD
Retailer 6$2,478 AUD
Retailer 3$3,443 AUD
MOH London$5,234 AUD

16 data points across 8 retailers

9 retailers$1,334 AUD to $5,234 AUD

A
Cheapest Retailer
-
$1,334 AUD
A
Retailer 2
-
$1,451 AUD
View
B+
Retailer 3
-
$1,547 AUD
View
Retailer 4
-
$1,547 AUD
View
Price last confirmed 25 days ago
B+
Retailer 5
-
$1,800 AUD
View
B
Retailer 6
-
$2,478 AUD
View
B
Retailer 7
-
$3,443 AUD
View
B
Retailer 8
-
$4,351 AUD
View
Most Expensive
B
MOH London
LG492112355 · Nov 5
$5,234 AUD
£2,885 GBP
View
8 more retailers have this diamond
Prices start from $1,334 AUDSave up to $3,900 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 Round
$1,334 AUD