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Radiant|Lab Grown|IGI

1.64ct G SI1 Radiant Lab Grown Diamond

ID • G/SI1 • IGI LG614324832

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG614324832

Diamond specifications and retailer prices

From $220 AUD
$155 USD
As of October 27, 2026
Save $1,898 AUD (90%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $2,119 AUD at Do Amore Diamonds · As of October 28, 2026
View at Do Amore Diamonds

About this 1.64ct lab-grown radiant diamond

This 1.64ct lab-grown radiant 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 LG614324832 or 614324832. Listed at 11 retailers as of October 27, 2026, with prices from $220 to $2,119, a $1,898 spread on the same certified stone. Do Amore Diamonds lists it at $2,119. 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle46.3°
Pavilion angle34°
OriginLab Grown
Grading LabIGI
CertificateIGI LG614324832
Dimensions8.41 × 5.78 × 3.82 mm
L/W Ratio1.46
Culet sizeNone
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
8.41 mm5.78 mm1.64 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG614324832
Side View
Table 66.0%Crown 46.3°Girdle: MediumPavilion 34°Culet: NoneDepth 66.1%

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 27
Current: $2,119 AUD|Low: $220 AUD|High: $2,247 AUD|Avg: $1,004 AUD|-5.7%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 26, 2026
Retailer 8$220 AUD
Retailer 6$256 AUD
Retailer 13$262 AUD
Retailer 10$499 AUD
Retailer 3$589 AUD
Retailer 4$869 AUD
Retailer 7$931 AUD
Retailer 9$973 AUD
Retailer 11$1,016 AUD
Retailer 5$1,316 AUD
Retailer 2$1,416 AUD
Retailer 12$1,493 AUD
Do Amore Diamonds$2,119 AUD

19 data points across 13 retailers

11 retailers$220 AUD to $2,119 AUD

A
Cheapest Retailer
-
$220 AUD
$155 USD
A
Retailer 2
-
$256 AUD
$180 USD
View
A
Retailer 3
-
$262 AUD
$184 USD
View
Final sale: no returns
B+
Retailer 4
-
$499 AUD
$351 USD
View
B+
Retailer 5
-
$931 AUD
$655 USD
View
B+
Retailer 6
-
$973 AUD
$684 USD
View
B+
Retailer 7
-
$1,016 AUD
$715 USD
View
B
Retailer 8
-
$1,381 AUD
£765 GBP
View
B+
Retailer 9
-
$1,416 AUD
£784 GBP
View
B
Retailer 10
-
$1,493 AUD
$1,050 USD
View
Most Expensive
B
Do Amore Diamonds
27-7F34645DF · Oct 28
$2,119 AUD
$1,490 USD
View
10 more retailers have this diamond
Prices start from $220 AUDSave up to $1,898 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 Radiant
$220 AUD