CaratHunter
Plans
Round|Lab Grown|IGI

1.65ct J SI1 Round Lab Grown Diamond

EX • J/SI1 • IGI LG445036480

Shape and cutting style on the report: Round brilliant

Certificate IGI LG445036480

Diamond specifications and retailer prices

From $1,650 NZD
$930 USD
As of October 31, 2026
Save $6,823 NZD (81%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $8,473 NZD at MOH London · As of October 29, 2026
View at MOH London

About this 1.65ct lab-grown round diamond

This 1.65ct 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 LG445036480 or 445036480. Listed at 11 retailers as of October 29, 2026, with prices from $1,650 to $8,473, a $6,823 spread on the same certified stone. MOH London lists it at $8,473. 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

1.65
Carat
J
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.5°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG445036480
Dimensions7.75 × 7.73 × 4.52 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Top View
7.75 mm7.73 mm1.65 ctJ / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG445036480
Side View
Table 60.0%Crown 31.5°Girdle: MediumPavilion 40.4°Culet: NoneDepth 58.4%

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: $8,473 NZD|Low: $1,650 NZD|High: $8,529 NZD|Avg: $3,944 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
Retailer 12
October 30, 2026
Retailer 2$1,650 NZD
Retailer 5$2,260 NZD
Retailer 8$2,532 NZD
Retailer 6$2,622 NZD
Retailer 9$2,622 NZD
Retailer 10$2,928 NZD
Retailer 4$3,064 NZD
Retailer 12$3,636 NZD
Retailer 7$4,150 NZD
Retailer 11$4,888 NZD
Retailer 3$7,506 NZD
MOH London$8,473 NZD

14 data points across 12 retailers

11 retailers$1,650 NZD to $8,473 NZD

A
Cheapest Retailer
-
$1,650 NZD
$930 USD
B+
Retailer 2
-
$2,260 NZD
$1,274 USD
View
B+
Retailer 3
-
$2,461 NZD
$1,387 USD
View
B+
Retailer 4
-
$2,532 NZD
$1,427 USD
View
Final sale: no returns
Retailer 5
-
$2,622 NZD
$1,478 USD
View
Price last confirmed 20 days ago
B+
Retailer 6
-
$2,622 NZD
$1,478 USD
View
B+
Retailer 7
-
$2,928 NZD
$1,650 USD
View
B
Retailer 8
-
$4,150 NZD
$2,339 USD
View
B
Retailer 9
-
$4,888 NZD
$2,755 USD
View
B
Retailer 10
-
$4,917 NZD
$2,771 USD
View
Most Expensive
B
MOH London
LG445036480 · Oct 29
$8,473 NZD
£3,760 GBP
View
10 more retailers have this diamond
Prices start from $1,650 NZDSave up to $6,823 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
1.65ct Round
$1,650 NZD