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1.64ct J SI1 Round Lab Grown Diamond

EX • J/SI1 • IGI LG442069131

Shape and cutting style on the report: Round brilliant

Certificate IGI LG442069131

Diamond specifications and retailer prices

From $1,650 NZD
$930 USD
As of October 31, 2026
Save $6,773 NZD (80%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $8,423 NZD at MOH London · As of October 29, 2026
View at MOH London

About this 1.64ct lab-grown round diamond

This 1.64ct 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 LG442069131 or 442069131. Listed at 11 retailers as of October 29, 2026, with prices from $1,650 to $8,423, a $6,773 spread on the same certified stone. MOH London lists it at $8,423. 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

1.64
Carat
J
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.6°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG442069131
Dimensions7.78 × 7.75 × 4.52 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Top View
7.78 mm7.75 mm1.64 ctJ / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG442069131
Side View
Table 60.0%Crown 31.6°Girdle: THN-MEDPavilion 40.5°Culet: NoneDepth 58.2%

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: $8,423 NZD|Low: $1,650 NZD|High: $8,488 NZD|Avg: $4,077 NZD|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 30, 2026
Retailer 2$1,650 NZD
Retailer 4$2,248 NZD
Retailer 7$2,516 NZD
Retailer 5$2,608 NZD
Retailer 8$2,910 NZD
Retailer 3$3,055 NZD
Retailer 10$3,616 NZD
Retailer 6$4,127 NZD
Retailer 9$4,860 NZD
Retailer 11$7,461 NZD
MOH London$8,423 NZD

15 data points across 11 retailers

11 retailers$1,650 NZD to $8,423 NZD

A
Cheapest Retailer
-
$1,650 NZD
$930 USD
B+
Retailer 2
-
$2,248 NZD
$1,267 USD
View
B+
Retailer 3
-
$2,445 NZD
$1,378 USD
View
B+
Retailer 4
-
$2,516 NZD
$1,418 USD
View
Final sale: no returns
B+
Retailer 5
-
$2,608 NZD
$1,470 USD
View
Retailer 6
-
$2,608 NZD
$1,470 USD
View
Price last confirmed 20 days ago
B+
Retailer 7
-
$2,910 NZD
$1,640 USD
View
B
Retailer 8
-
$4,127 NZD
$2,326 USD
View
B
Retailer 9
-
$4,860 NZD
$2,739 USD
View
B
Retailer 10
-
$4,886 NZD
$2,754 USD
View
Most Expensive
B
MOH London
LG442069131 · Oct 29
$8,423 NZD
£3,738 GBP
View
10 more retailers have this diamond
Prices start from $1,650 NZDSave up to $6,773 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
1.64ct Round
$1,650 NZD