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Radiant|Lab Grown|IGI

1.64ct E IF Radiant Lab Grown Diamond

ID • E/IF • IGI LG600377774

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

Certificate IGI LG600377774

Diamond specifications and retailer prices

From $458 AUD
$322 USD
As of October 27, 2026
Save $3,954 AUD (90%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: $4,413 AUD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

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 E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG600377774 or 600377774. Listed at 25 retailers as of October 27, 2026, with prices from $458 to $4,413, a $3,954 spread on the same certified stone. Brilliant Earth lists it at $4,413. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.64
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.2°
Pavilion angle32°
OriginLab Grown
Grading LabIGI
CertificateIGI LG600377774
Dimensions9.06 × 5.84 × 3.68 mm
L/W Ratio1.55
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
9.06 mm5.84 mm1.64 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG600377774
Side View
Table 64.0%Crown 41.2°Girdle: MediumPavilion 32°Culet: NoneDepth 63.0%

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: Oct 27
Current: $4,413 AUD|Low: $458 AUD|High: $4,441 AUD|Avg: $1,781 AUD|-0.6%
Brilliant Earth
Retailer 2
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Retailer 24
October 30, 2026
Retailer 6$458 AUD
Retailer 10$512 AUD
Retailer 16$532 AUD
Retailer 3$568 AUD
Retailer 21$568 AUD
Retailer 23$638 AUD
Retailer 20$790 AUD
Retailer 22$918 AUD
Retailer 11$922 AUD
Retailer 7$942 AUD
Retailer 19$977 AUD
Retailer 2$1,015 AUD
Retailer 18$1,325 AUD
Retailer 4$1,667 AUD
Retailer 8$1,687 AUD
Retailer 14$1,821 AUD
Retailer 24$1,828 AUD
Retailer 9$1,892 AUD
Retailer 15$2,185 AUD
Retailer 5$2,213 AUD
Retailer 12$2,254 AUD
Retailer 13$2,290 AUD
Retailer 17$3,416 AUD
Brilliant Earth$4,413 AUD

40 data points across 24 retailers

25 retailers$458 AUD to $4,413 AUD

A
Cheapest Retailer
-
$458 AUD
$322 USD
A
Retailer 2
-
$512 AUD
$360 USD
View
Final sale: no returns
A
Retailer 3
-
$532 AUD
$374 USD
View
A
Retailer 4
-
$568 AUD
$399 USD
View
A
Retailer 5
-
$568 AUD
$399 USD
View
A
Retailer 6
-
$638 AUD
HK$3,500 HKD
View
A
Retailer 7
-
$790 AUD
$555 USD
View
A
Retailer 8
-
$918 AUD
€614 EUR
View
A
Retailer 9
-
$922 AUD
$648 USD
View
A
Retailer 10
-
$942 AUD
$662 USD
View
A
Retailer 11
-
$977 AUD
ZAR 11,088 ZAR
View
A
Retailer 12
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$1,015 AUD
£562 GBP
View
A
Retailer 13
-
$1,325 AUD
View
A
Retailer 14
-
$1,667 AUD
$1,171 USD
View
B+
Retailer 15
-
$1,687 AUD
$1,185 USD
View
B+
Retailer 16
-
$1,821 AUD
SGD 1,729 SGD
View
B+
Retailer 17
-
$1,828 AUD
$1,284 USD
View
B+
Retailer 18
-
$1,892 AUD
$1,329 USD
View
B+
Retailer 19
-
$2,013 AUD
$1,414 USD
View
B+
Retailer 20
-
$2,185 AUD
$1,535 USD
View
B+
Retailer 21
-
$2,213 AUD
£1,224 GBP
View
B+
Retailer 22
-
$2,254 AUD
$1,583 USD
View
B+
Retailer 23
-
$2,290 AUD
£1,267 GBP
View
Retailer 24
-
$3,416 AUD
$2,400 USD
View
Price last confirmed 11 days ago
Most Expensive
B
Brilliant Earth
19055686A · Oct 29
$4,413 AUD
$3,100 USD
View
24 more retailers have this diamond
Prices start from $458 AUDSave up to $3,954 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
$458 AUD