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Radiant|Lab Grown|IGI

1.64ct D IF Radiant Lab Grown Diamond

EX • D/IF • IGI LG705509687

Certificate IGI LG705509687

Diamond specifications and retailer prices

From $456 USD
Save $3,794 USD (89%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $4,250 USD at Brilliant Earth
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 D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG705509687 or 705509687. Listed at 20 retailers, with prices from $456 to $4,250 at Brilliant Earth, a $3,794 spread on the same certified stone. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.64
Carat
D
Color
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.7°
Pavilion angle33.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG705509687
Dimensions8.89 × 5.91 × 3.77 mm
L/W Ratio1.50
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
8.89 mm5.91 mm1.64 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG705509687
Side View
Table 60.0%Crown 38.7°Girdle: MediumPavilion 33.1°Culet: NoneDepth 63.8%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0-100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 1
Current: $4,250 USD|Low: $325 USD|High: $4,290 USD|Avg: $1,504 USD|-0.9%
Brilliant Earth
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
Retailer 19
October 1, 2026
Retailer 5$456 USD
Retailer 9$550 USD
Retailer 2$732 USD
Retailer 3$753 USD
Retailer 17$765 USD
Retailer 18$777 USD
Retailer 12$826 USD
Retailer 16$852 USD
Retailer 15$1,176 USD
Retailer 8$1,207 USD
Retailer 6$1,307 USD
Retailer 19$1,611 USD
Retailer 10$1,663 USD
Retailer 7$1,859 USD
Retailer 13$2,003 USD
Retailer 4$2,074 USD
Retailer 14$2,990 USD
Retailer 11$3,023 USD
Brilliant Earth$4,250 USD

40 data points across 19 retailers

20 retailers$456 USD to $4,250 USD

A
Cheapest Retailer
-
$456 USD
A
Retailer 2
-
$550 USD
HK$4,300 HKD
View
Price last confirmed 27 days ago
A
Retailer 3
-
$732 USD
View
A
Retailer 4
-
$753 USD
View
A
Retailer 5
-
$765 USD
View
A
Retailer 6
-
$777 USD
€740 EUR
View
A
Retailer 7
-
$826 USD
£650 GBP
View
A
Retailer 8
-
$852 USD
ZAR 13,771 ZAR
View
A
Retailer 9
-
$1,176 USD
A$1,809 AUD
View
A
Retailer 10
-
$1,207 USD
View
B+
Retailer 11
-
$1,307 USD
View
B+
Retailer 12
-
$1,611 USD
SGD 2,177 SGD
View
B+
Retailer 13
-
$1,663 USD
View
B+
Retailer 14
-
$1,842 USD
View
B+
Retailer 15
-
$1,859 USD
View
B+
Retailer 16
-
$2,003 USD
£1,577 GBP
View
B+
Retailer 17
-
$2,074 USD
View
B
Retailer 18
-
$2,990 USD
View
B
Retailer 19
-
$3,023 USD
£2,380 GBP
View
Most Expensive
B
Brilliant Earth
14166265A · Oct 1
$4,250 USD
View
19 more retailers have this diamond
Prices start from $456 USDSave up to $3,794 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.

A
1.64ct Radiant
$456 USD