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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 $322 USD
As of October 27, 2026
Save $2,778 USD (90%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: $3,100 USD 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 $322 to $3,100, a $2,778 spread on the same certified stone. Brilliant Earth lists it at $3,100. 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
Color
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

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: $3,100 USD|Low: $322 USD|High: $3,120 USD|Avg: $1,258 USD|-0.6%
Brilliant Earth
Retailer 2
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Retailer 24
October 29, 2026
Retailer 6$322 USD
Retailer 10$360 USD
Retailer 16$374 USD
Retailer 3$399 USD
Retailer 21$399 USD
Retailer 23$448 USD
Retailer 20$555 USD
Retailer 22$645 USD
Retailer 11$648 USD
Retailer 7$662 USD
Retailer 19$686 USD
Retailer 2$711 USD
Retailer 18$931 USD
Retailer 4$1,171 USD
Retailer 8$1,185 USD
Retailer 14$1,279 USD
Retailer 24$1,284 USD
Retailer 9$1,329 USD
Retailer 15$1,535 USD
Retailer 5$1,554 USD
Retailer 12$1,583 USD
Retailer 13$1,609 USD
Retailer 17$2,400 USD
Brilliant Earth$3,100 USD

39 data points across 24 retailers

25 retailers$322 USD to $3,100 USD

A
Cheapest Retailer
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$322 USD
A
Retailer 2
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$360 USD
View
Final sale: no returns
A
Retailer 3
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$374 USD
View
A
Retailer 4
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$399 USD
View
A
Retailer 5
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$399 USD
View
A
Retailer 6
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$448 USD
HK$3,500 HKD
View
A
Retailer 7
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$555 USD
View
A
Retailer 8
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$645 USD
€614 EUR
View
A
Retailer 9
-
$648 USD
View
A
Retailer 10
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$662 USD
View
A
Retailer 11
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$686 USD
ZAR 11,088 ZAR
View
A
Retailer 12
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$711 USD
£560 GBP
View
A
Retailer 13
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$931 USD
A$1,432 AUD
View
A
Retailer 14
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$1,171 USD
View
B+
Retailer 15
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$1,185 USD
View
B+
Retailer 16
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$1,279 USD
SGD 1,729 SGD
View
B+
Retailer 17
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$1,284 USD
View
B+
Retailer 18
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$1,329 USD
View
B+
Retailer 19
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$1,414 USD
View
B+
Retailer 20
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$1,535 USD
View
B+
Retailer 21
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$1,554 USD
£1,224 GBP
View
B+
Retailer 22
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$1,583 USD
View
B+
Retailer 23
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$1,609 USD
£1,267 GBP
View
Retailer 24
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$2,400 USD
View
Price last confirmed 11 days ago
Most Expensive
B
Brilliant Earth
19055686A · Oct 29
$3,100 USD
View
24 more retailers have this diamond
Prices start from $322 USDSave up to $2,778 USD

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
$322 USD