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Round|Lab Grown|IGI

1.64ct G SI1 Round Lab Grown Diamond

EX • G/SI1 • IGI LG395987168

Shape and cutting style on the report: Round brilliant

Certificate IGI LG395987168

Diamond specifications and retailer prices

From $353 AUD
$248 USD
As of November 1, 2026
Save $1,220 AUD (78%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $1,573 AUD 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG395987168 or 395987168. Listed at 7 retailers as of October 29, 2026, with prices from $353 to $1,573, a $1,220 spread on the same certified stone. MOH London lists it at $1,573. 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
G
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.7°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG395987168
Dimensions7.78 × 7.74 × 4.52 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory grown diamond was created by chemical vapor deposition process (CVD) Type IIa
Top View
7.78 mm7.74 mm1.64 ctG / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG395987168
Side View
Table 60.5%Crown 32.7°Girdle: THN-MEDPavilion 40.6°Culet: NoneDepth 58.3%

Caratlytics Score

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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 1
Current: $1,573 AUD|Low: $252 AUD|High: $1,584 AUD|Avg: $841 AUD|+0.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 1, 2026
Retailer 6$353 AUD
Retailer 3$643 AUD
Retailer 5$666 AUD
Retailer 2$724 AUD
Retailer 7$866 AUD
Retailer 4$1,082 AUD
MOH London$1,573 AUD

41 data points across 7 retailers

7 retailers$353 AUD to $1,573 AUD

A
Cheapest Retailer
-
$353 AUD
$248 USD
Final sale: no returns
A
Retailer 2
-
$643 AUD
€430 EUR
View
B+
Retailer 3
-
$666 AUD
$468 USD
View
B+
Retailer 4
-
$724 AUD
£401 GBP
View
B+
Retailer 5
-
$866 AUD
$608 USD
View
Retailer 6
-
$1,082 AUD
$760 USD
View
Price last confirmed 11 days ago
Most Expensive
B
MOH London
LG395987168 · Oct 29
$1,573 AUD
£870 GBP
View
6 more retailers have this diamond
Prices start from $353 AUDSave up to $1,220 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
$353 AUD