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Round|Lab Grown|IGI

1.65ct J SI2 Round Lab Grown Diamond

ID • J/SI2 • IGI LG440012524

Shape and cutting style on the report: Round brilliant

Certificate IGI LG440012524

Diamond specifications and retailer prices

From $1,310 AUD
$920 USD
As of October 30, 2026
Save $4,801 AUD (79%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $6,111 AUD at MOH London · As of October 27, 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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG440012524 or 440012524. Listed at 11 retailers as of October 27, 2026, with prices from $1,310 to $6,111, a $4,801 spread on the same certified stone. MOH London lists it at $6,111. 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
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.1°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG440012524
Dimensions7.54 × 7.51 × 4.64 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
7.54 mm7.51 mm1.65 ctJ / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG440012524
Side View
Table 59.0%Crown 36.1°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 61.6%

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: Oct 30
Current: $6,111 AUD|Low: $1,310 AUD|High: $6,183 AUD|Avg: $2,728 AUD|-0.9%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
October 30, 2026
Retailer 2$1,310 AUD
Retailer 8$1,637 AUD
Retailer 11$1,781 AUD
Retailer 13$1,834 AUD
Retailer 9$1,899 AUD
Retailer 14$1,899 AUD
Retailer 5$2,082 AUD
Retailer 7$2,210 AUD
Retailer 4$2,712 AUD
Retailer 10$3,017 AUD
Retailer 12$3,560 AUD
Retailer 3$3,743 AUD
Retailer 6$4,247 AUD
MOH London$6,111 AUD

23 data points across 14 retailers

11 retailers$1,310 AUD to $6,111 AUD

A
Cheapest Retailer
-
$1,310 AUD
$920 USD
B+
Retailer 2
-
$1,637 AUD
$1,150 USD
View
B+
Retailer 3
-
$1,781 AUD
$1,251 USD
View
B+
Retailer 4
-
$1,834 AUD
$1,288 USD
View
Final sale: no returns
B+
Retailer 5
-
$1,899 AUD
$1,334 USD
View
Retailer 6
-
$1,899 AUD
$1,334 USD
View
Price last confirmed 18 days ago
B+
Retailer 7
-
$2,210 AUD
£1,222 GBP
View
B
Retailer 8
-
$3,017 AUD
$2,119 USD
View
B
Retailer 9
-
$3,560 AUD
$2,501 USD
View
B
Retailer 10
-
$3,743 AUD
$2,629 USD
View
Most Expensive
B
MOH London
LG440012524 · Oct 27
$6,111 AUD
£3,380 GBP
View
10 more retailers have this diamond
Prices start from $1,310 AUDSave up to $4,801 AUD

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
$1,310 AUD