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1.55ct J SI1 Round Lab Grown Diamond

EX • J/SI1 • IGI LG440010935

Shape and cutting style on the report: Round brilliant

Certificate IGI LG440010935

Diamond specifications and retailer prices

From $1,227 AUD
$860 USD
As of November 2, 2026
Save $5,148 AUD (81%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $6,375 AUD at MOH London · As of November 1, 2026
View at MOH London

About this 1.55ct lab-grown round diamond

This 1.55ct lab-grown round sits in the one-and-a-half to two carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG440010935 or 440010935. Listed at 11 retailers as of November 1, 2026, with prices from $1,227 to $6,375, a $5,148 spread on the same certified stone. MOH London lists it at $6,375. 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

1.55
Carat
J
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.2°
Pavilion angle41.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG440010935
Dimensions7.43 × 7.38 × 4.60 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
7.43 mm7.38 mm1.55 ctJ / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG440010935
Side View
Table 59.5%Crown 35.2°Girdle: MediumPavilion 41.5°Culet: NoneDepth 62.2%

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: Nov 2
Current: $6,375 AUD|Low: $1,227 AUD|High: $6,460 AUD|Avg: $3,200 AUD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 2$1,227 AUD
Retailer 3$1,711 AUD
Retailer 6$1,916 AUD
Retailer 4$1,985 AUD
Retailer 7$2,233 AUD
Retailer 9$2,811 AUD
Retailer 5$3,148 AUD
Retailer 8$3,801 AUD
Retailer 10$5,678 AUD
MOH London$6,375 AUD

16 data points across 10 retailers

11 retailers$1,227 AUD to $6,375 AUD

A
Cheapest Retailer
-
$1,227 AUD
$860 USD
B+
Retailer 2
-
$1,711 AUD
$1,199 USD
View
B+
Retailer 3
-
$1,861 AUD
$1,304 USD
View
B+
Retailer 4
-
$1,916 AUD
$1,343 USD
View
Final sale: no returns
B+
Retailer 5
-
$1,985 AUD
$1,391 USD
View
Retailer 6
-
$1,985 AUD
$1,391 USD
View
Price last confirmed 21 days ago
B+
Retailer 7
-
$2,233 AUD
$1,565 USD
View
B
Retailer 8
-
$3,148 AUD
$2,206 USD
View
B
Retailer 9
-
$3,720 AUD
$2,607 USD
View
B
Retailer 10
-
$3,801 AUD
$2,664 USD
View
Most Expensive
B
MOH London
LG440010935 · Nov 1
$6,375 AUD
£3,518 GBP
View
10 more retailers have this diamond
Prices start from $1,227 AUDSave up to $5,148 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
1.55ct Round
$1,227 AUD