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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 $571 NZD
$322 USD
As of October 30, 2026
Save $4,929 NZD (90%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: $5,500 NZD 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 29, 2026, with prices from $571 to $5,500, a $4,929 spread on the same certified stone. Brilliant Earth lists it at $5,500. 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 30
Current: $5,500 NZD|Low: $571 NZD|High: $5,536 NZD|Avg: $2,220 NZD|-0.6%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
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Retailer 7
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Retailer 11
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Retailer 24
October 30, 2026
Retailer 6$571 NZD
Retailer 10$639 NZD
Retailer 16$664 NZD
Retailer 3$708 NZD
Retailer 21$708 NZD
Retailer 23$795 NZD
Retailer 20$985 NZD
Retailer 22$1,144 NZD
Retailer 11$1,150 NZD
Retailer 7$1,175 NZD
Retailer 19$1,218 NZD
Retailer 2$1,266 NZD
Retailer 18$1,652 NZD
Retailer 4$2,078 NZD
Retailer 8$2,103 NZD
Retailer 14$2,270 NZD
Retailer 24$2,278 NZD
Retailer 9$2,358 NZD
Retailer 15$2,724 NZD
Retailer 5$2,758 NZD
Retailer 12$2,809 NZD
Retailer 13$2,855 NZD
Retailer 17$4,258 NZD
Brilliant Earth$5,500 NZD

40 data points across 24 retailers

25 retailers$571 NZD to $5,500 NZD

A
Cheapest Retailer
-
$571 NZD
$322 USD
A
Retailer 2
-
$639 NZD
$360 USD
View
Final sale: no returns
A
Retailer 3
-
$664 NZD
$374 USD
View
A
Retailer 4
-
$708 NZD
$399 USD
View
A
Retailer 5
-
$708 NZD
$399 USD
View
A
Retailer 6
-
$795 NZD
HK$3,500 HKD
View
A
Retailer 7
-
$985 NZD
$555 USD
View
Retailer 8
-
$1,144 NZD
€614 EUR
View
Price last confirmed 7 days ago
A
Retailer 9
-
$1,150 NZD
$648 USD
View
A
Retailer 10
-
$1,175 NZD
$662 USD
View
A
Retailer 11
-
$1,218 NZD
ZAR 11,088 ZAR
View
A
Retailer 12
-
$1,266 NZD
£562 GBP
View
A
Retailer 13
-
$1,652 NZD
A$1,432 AUD
View
A
Retailer 14
-
$2,078 NZD
$1,171 USD
View
B+
Retailer 15
-
$2,103 NZD
$1,185 USD
View
B+
Retailer 16
-
$2,270 NZD
SGD 1,729 SGD
View
B+
Retailer 17
-
$2,278 NZD
$1,284 USD
View
B+
Retailer 18
-
$2,358 NZD
$1,329 USD
View
B+
Retailer 19
-
$2,509 NZD
$1,414 USD
View
B+
Retailer 20
-
$2,724 NZD
$1,535 USD
View
B+
Retailer 21
-
$2,758 NZD
£1,224 GBP
View
B+
Retailer 22
-
$2,809 NZD
$1,583 USD
View
B+
Retailer 23
-
$2,855 NZD
£1,267 GBP
View
Retailer 24
-
$4,258 NZD
$2,400 USD
View
Price last confirmed 11 days ago
Most Expensive
B
Brilliant Earth
19055686A · Oct 29
$5,500 NZD
$3,100 USD
View
24 more retailers have this diamond
Prices start from $571 NZDSave up to $4,929 NZD

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
$571 NZD