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Round|Lab Grown|IGI

1.64ct H SI1 Round Lab Grown Diamond

ID • H/SI1 • IGI LG12279308

Shape and cutting style on the report: Round brilliant

Certificate IGI LG12279308

Diamond specifications and retailer prices

From $615 AUD
$432 USD
As of November 1, 2026
Save $3,855 AUD (86%) vs most expensive(unlock to see where)
11 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 LG12279308 or 12279308. Listed at 11 retailers as of October 31, 2026, with prices from $615 to $4,470, a $3,855 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG12279308
Dimensions7.59 × 7.61 × 4.64 mm
L/W Ratio1.00
Cert comments
As Grown - No indications of post-growth treatment. This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process.
Top View
7.59 mm7.61 mm1.64 ctH / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG12279308
Side View
Table 59.5%Crown 35°Girdle: MediumPavilion 41°Culet: NoneDepth 61.1%

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: Nov 1
Current: $4,470 AUD|Low: $615 AUD|High: $4,470 AUD|Avg: $1,604 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
November 1, 2026
Retailer 6$615 AUD
Retailer 8$770 AUD
Retailer 9$840 AUD
Retailer 11$1,079 AUD
Retailer 5$1,111 AUD
Retailer 3$1,208 AUD
Retailer 2$1,310 AUD
Retailer 7$1,828 AUD
Retailer 10$1,886 AUD
Retailer 4$2,688 AUD
Do Amore Diamonds$4,470 AUD

11 data points across 11 retailers

11 retailers$615 AUD to $4,470 AUD

B+
Cheapest Retailer
-
$615 AUD
$432 USD
A
Retailer 2
-
$770 AUD
$541 USD
View
A
Retailer 3
-
$840 AUD
$590 USD
View
A
Retailer 4
-
$1,079 AUD
$758 USD
View
A
Retailer 5
-
$1,111 AUD
£614 GBP
View
A
Retailer 6
-
$1,208 AUD
$849 USD
View
A
Retailer 7
-
$1,310 AUD
$920 USD
View
A
Retailer 8
-
$1,828 AUD
$1,284 USD
View
A
Retailer 9
-
$1,886 AUD
$1,325 USD
View
B+
Retailer 10
-
$2,688 AUD
£1,487 GBP
View
Most Expensive
B
Do Amore Diamonds
27-DBBFF0559 · Oct 31
$4,470 AUD
$3,140 USD
View
10 more retailers have this diamond
Prices start from $615 AUDSave up to $3,855 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
$615 AUD