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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 $1,526 NZD
$860 USD
As of October 31, 2026
Save $6,401 NZD (81%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $7,927 NZD 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 October 31, 2026, with prices from $1,526 to $7,927, a $6,401 spread on the same certified stone. MOH London lists it at $7,927. 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: Oct 31
Current: $7,927 NZD|Low: $1,526 NZD|High: $8,033 NZD|Avg: $3,979 NZD
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$1,526 NZD
Retailer 3$2,127 NZD
Retailer 6$2,383 NZD
Retailer 4$2,468 NZD
Retailer 7$2,777 NZD
Retailer 9$3,495 NZD
Retailer 5$3,914 NZD
Retailer 8$4,727 NZD
Retailer 10$7,060 NZD
MOH London$7,927 NZD

16 data points across 10 retailers

11 retailers$1,526 NZD to $7,927 NZD

A
Cheapest Retailer
-
$1,526 NZD
$860 USD
B+
Retailer 2
-
$2,127 NZD
$1,199 USD
View
B+
Retailer 3
-
$2,314 NZD
$1,304 USD
View
B+
Retailer 4
-
$2,383 NZD
$1,343 USD
View
Final sale: no returns
B+
Retailer 5
-
$2,468 NZD
$1,391 USD
View
Retailer 6
-
$2,468 NZD
$1,391 USD
View
Price last confirmed 20 days ago
B+
Retailer 7
-
$2,777 NZD
$1,565 USD
View
B
Retailer 8
-
$3,914 NZD
$2,206 USD
View
B
Retailer 9
-
$4,626 NZD
$2,607 USD
View
B
Retailer 10
-
$4,727 NZD
$2,664 USD
View
Most Expensive
B
MOH London
LG440010935 · Nov 1
$7,927 NZD
£3,518 GBP
View
10 more retailers have this diamond
Prices start from $1,526 NZDSave up to $6,401 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
1.55ct Round
$1,526 NZD