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1.54ct J SI1 Round Lab Grown Diamond

EX • J/SI1 • IGI LG485136600

Shape and cutting style on the report: Round brilliant

Certificate IGI LG485136600

Diamond specifications and retailer prices

From $1,526 NZD
$860 USD
As of October 31, 2026
Save $6,352 NZD (81%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $7,878 NZD at MOH London · As of November 1, 2026
View at MOH London

About this 1.54ct lab-grown round diamond

This 1.54ct 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 LG485136600 or 485136600. Listed at 11 retailers as of October 31, 2026, with prices from $1,526 to $7,878, a $6,352 spread on the same certified stone. MOH London lists it at $7,878. 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

1.54
Carat
J
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG485136600
Dimensions7.34 × 7.29 × 4.62 mm
L/W Ratio1.01
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
7.34 mm7.29 mm1.54 ctJ / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG485136600
Side View
Table 55.5%Crown 36°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 63.1%

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: $7,878 NZD|Low: $1,526 NZD|High: $7,984 NZD|Avg: $3,647 NZD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 2$1,526 NZD
Retailer 3$2,113 NZD
Retailer 6$2,367 NZD
Retailer 4$2,452 NZD
Retailer 7$2,759 NZD
Retailer 9$3,476 NZD
Retailer 5$3,891 NZD
Retailer 8$4,697 NZD
MOH London$7,878 NZD

16 data points across 9 retailers

11 retailers$1,526 NZD to $7,878 NZD

A
Cheapest Retailer
-
$1,526 NZD
$860 USD
B+
Retailer 2
-
$2,113 NZD
$1,191 USD
View
B+
Retailer 3
-
$2,299 NZD
$1,296 USD
View
B+
Retailer 4
-
$2,367 NZD
$1,334 USD
View
Final sale: no returns
Retailer 5
-
$2,452 NZD
$1,382 USD
View
Price last confirmed 20 days ago
B+
Retailer 6
-
$2,452 NZD
$1,382 USD
View
B+
Retailer 7
-
$2,759 NZD
$1,555 USD
View
B
Retailer 8
-
$3,891 NZD
$2,193 USD
View
B
Retailer 9
-
$4,595 NZD
$2,590 USD
View
B
Retailer 10
-
$4,697 NZD
$2,647 USD
View
Most Expensive
B
MOH London
LG485136600 · Nov 1
$7,878 NZD
£3,496 GBP
View
10 more retailers have this diamond
Prices start from $1,526 NZDSave up to $6,352 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
1.54ct Round
$1,526 NZD