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Round|Lab Grown|IGI

1.64ct H SI1 Round Lab Grown Diamond

EX • H/SI1 • IGI LG544247670

Shape and cutting style on the report: Round brilliant

Certificate IGI LG544247670

Diamond specifications and retailer prices

From $503 AUD
$353 USD
As of November 1, 2026
Save $3,968 AUD (89%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $4,470 AUD at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG544247670 or 544247670. Listed at 18 retailers as of October 31, 2026, with prices from $503 to $4,470, a $3,968 spread on the same certified stone. Do Amore Diamonds lists it at $4,470. 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
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.9°
Pavilion angle41.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG544247670
Dimensions7.58 × 7.63 × 4.66 mm
L/W Ratio1.01
Girdle conditionFaceted
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
7.58 mm7.63 mm1.64 ctH / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG544247670
Side View
Table 59.5%Crown 34.9°Girdle: MediumPavilion 41.4°Culet: NoneDepth 61.2%

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: Nov 1
Current: $4,470 AUD|Low: $503 AUD|High: $4,470 AUD|Avg: $1,365 AUD|+0.3%
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
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
November 1, 2026
Retailer 18$503 AUD
Retailer 15$584 AUD
Retailer 13$615 AUD
Retailer 5$624 AUD
Retailer 14$624 AUD
Retailer 3$770 AUD
Retailer 6$840 AUD
Retailer 7$1,053 AUD
Retailer 9$1,079 AUD
Retailer 16$1,100 AUD
Retailer 12$1,111 AUD
Retailer 10$1,208 AUD
Retailer 2$1,324 AUD
Retailer 17$1,828 AUD
Retailer 8$1,886 AUD
Retailer 4$2,212 AUD
Retailer 11$2,688 AUD
Do Amore Diamonds$4,470 AUD

13 data points across 18 retailers

18 retailers$503 AUD to $4,470 AUD

A
Cheapest Retailer
-
$503 AUD
$353 USD
A
Retailer 2
-
$584 AUD
$410 USD
View
B+
Retailer 3
-
$615 AUD
$432 USD
View
Retailer 4
-
$624 AUD
$438 USD
View
Price last confirmed 7 days ago
A
Retailer 5
-
$624 AUD
$438 USD
View
A
Retailer 6
-
$770 AUD
$541 USD
View
A
Retailer 7
-
$840 AUD
$590 USD
View
Retailer 8
-
$1,053 AUD
$740 USD
View
Price last confirmed 11 days ago
A
Retailer 9
-
$1,079 AUD
$758 USD
View
A
Retailer 10
-
$1,100 AUD
$773 USD
View
A
Retailer 11
-
$1,111 AUD
£614 GBP
View
A
Retailer 12
-
$1,208 AUD
$849 USD
View
A
Retailer 13
-
$1,324 AUD
$930 USD
View
A
Retailer 14
-
$1,828 AUD
$1,284 USD
View
A
Retailer 15
-
$1,886 AUD
$1,325 USD
View
B+
Retailer 16
-
$2,212 AUD
$1,554 USD
View
B+
Retailer 17
-
$2,688 AUD
£1,487 GBP
View
Most Expensive
B
Do Amore Diamonds
27-CA75B31E7 · Oct 31
$4,470 AUD
$3,140 USD
View
17 more retailers have this diamond
Prices start from $503 AUDSave up to $3,968 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
$503 AUD