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1.33ct J SI1 Round Lab Grown Diamond

ID • J/SI1 • IGI LG492123252

Shape and cutting style on the report: Round brilliant

Certificate IGI LG492123252

Diamond specifications and retailer prices

From $1,121 NZD
As of November 5, 2026
Save $4,344 NZD (79%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $5,465 NZD at MOH London · As of November 5, 2026
View at MOH London

About this 1.33ct lab-grown round diamond

This 1.33ct lab-grown round sits in the one-and-a-quarter to one-and-a-half carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG492123252 or 492123252. Listed at 11 retailers as of November 5, 2026, with prices from $1,121 to $5,465, a $4,344 spread on the same certified stone. MOH London lists it at $5,465. 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

1.33
Carat
J
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG492123252
Dimensions7.11 × 7.12 × 4.30 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
7.11 mm7.12 mm1.33 ctJ / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG492123252
Side View
Table 59.5%Crown 33°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 60.3%

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: $5,465 NZD|Low: $1,076 NZD|High: $5,544 NZD|Avg: $2,130 NZD|-1.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 5, 2026
Retailer 5$1,121 NZD
Retailer 8$1,256 NZD
Retailer 6$1,300 NZD
Retailer 9$1,300 NZD
Retailer 2$1,352 NZD
Retailer 3$1,619 NZD
Retailer 7$2,126 NZD
Retailer 10$2,126 NZD
Retailer 4$3,323 NZD
MOH London$5,465 NZD

21 data points across 10 retailers

11 retailers$1,121 NZD to $5,465 NZD

A
Cheapest Retailer
-
$1,121 NZD
A
Retailer 2
-
$1,220 NZD
View
B+
Retailer 3
-
$1,256 NZD
View
Final sale: no returns
Retailer 4
-
$1,300 NZD
View
Price last confirmed 21 days ago
B+
Retailer 5
-
$1,300 NZD
View
B+
Retailer 6
-
$1,352 NZD
View
B+
Retailer 7
-
$1,619 NZD
View
B
Retailer 8
-
$2,126 NZD
View
B
Retailer 9
-
$3,323 NZD
View
B
Retailer 10
-
$3,657 NZD
View
Most Expensive
B
MOH London
LG492123252 · Nov 5
$5,465 NZD
£2,419 GBP
View
10 more retailers have this diamond
Prices start from $1,121 NZDSave up to $4,344 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
1.33ct Round
$1,121 NZD