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Round|Lab Grown|IGI

1.64ct H SI2 Round Lab Grown Diamond

ID • H/SI2 • IGI LG488155747

Shape and cutting style on the report: Round brilliant

Certificate IGI LG488155747

Diamond specifications and retailer prices

From $1,720 AUD
$1,210 USD
As of October 28, 2026
Save $2,727 AUD (61%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $6,813 AUD at MOH London · As of October 21, 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 H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG488155747 or 488155747. Listed at 10 retailers as of October 27, 2026, with a 159% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
H
Colour
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.1°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG488155747
Dimensions7.63 × 7.59 × 4.63 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
7.63 mm7.59 mm1.64 ctH / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG488155747
Side View
Table 59.5%Crown 33.1°Girdle: THN-MEDPavilion 41.2°Culet: NoneDepth 60.8%

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 28
Current: $6,813 AUD|Low: $1,634 AUD|High: $6,868 AUD|Avg: $3,387 AUD|+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 18, 2026
Retailer 4$1,720 AUD
Retailer 2$2,046 AUD
Retailer 7$2,289 AUD
Retailer 5$2,373 AUD
Retailer 8$2,373 AUD
Retailer 11$2,688 AUD
Retailer 10$3,235 AUD
Retailer 6$3,744 AUD
Retailer 9$4,307 AUD
Retailer 3$5,313 AUD
MOH London$6,813 AUD

14 data points across 11 retailers

10 retailers$1,720 AUD to $4,448 AUD

A
Cheapest Retailer
-
$1,720 AUD
$1,210 USD
A
Retailer 2
-
$2,046 AUD
$1,439 USD
View
B+
Retailer 3
-
$2,225 AUD
$1,565 USD
View
B+
Retailer 4
-
$2,289 AUD
$1,610 USD
View
Final sale: no returns
B+
Retailer 5
-
$2,373 AUD
$1,669 USD
View
B+
Retailer 6
-
$2,373 AUD
$1,669 USD
View
Price last confirmed 16 days ago
B
Retailer 7
-
$3,744 AUD
$2,633 USD
View
B
Retailer 8
-
$4,307 AUD
$3,029 USD
View
B
Retailer 9
-
$4,448 AUD
$3,128 USD
View
Most Expensive
B
MOH London
LG488155747 · Oct 21
$6,813 AUD
£3,773 GBP
View
Price last confirmed 8 days ago
9 more retailers have this diamond
Prices start from $1,720 AUDSave up to $2,727 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
1.64ct Round
$1,720 AUD