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Radiant|Lab Grown|IGI

1.64ct D FL Radiant Lab Grown Diamond

EX • D/FL • IGI LG799676862

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

Certificate IGI LG799676862

Diamond specifications and retailer prices

From $674 USD
As of November 2, 2026
Save $5,306 USD (89%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $5,980 USD at Do Amore Diamonds · As of November 2, 2026
View at Do Amore Diamonds

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 FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG799676862 or 799676862. Listed at 22 retailers as of November 2, 2026, with prices from $674 to $5,980, a $5,306 spread on the same certified stone. Do Amore Diamonds lists it at $5,980. 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
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.6°
Pavilion angle35°
OriginLab Grown
Grading LabIGI
CertificateIGI LG799676862
Dimensions8.72 × 5.87 × 3.87 mm
L/W Ratio1.49
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
8.72 mm5.87 mm1.64 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG799676862
Side View
Table 60.0%Crown 39.6°Girdle: MediumPavilion 35°Culet: NoneDepth 65.9%

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: Nov 2
Current: $5,980 USD|Low: $647 USD|High: $5,980 USD|Avg: $2,152 USD
Do Amore Diamonds
Retailer 2
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Retailer 22
November 2, 2026
Retailer 22$674 USD
Retailer 21$733 USD
Retailer 9$753 USD
Retailer 3$781 USD
Retailer 10$781 USD
Retailer 16$960 USD
Retailer 5$996 USD
Retailer 6$1,029 USD
Retailer 18$1,075 USD
Retailer 8$1,273 USD
Retailer 13$1,385 USD
Retailer 2$1,585 USD
Retailer 20$1,996 USD
Retailer 7$2,425 USD
Retailer 4$2,665 USD
Retailer 14$2,682 USD
Retailer 11$2,683 USD
Retailer 15$3,086 USD
Retailer 12$3,106 USD
Retailer 17$3,391 USD
Retailer 19$3,910 USD
Do Amore Diamonds$5,980 USD

44 data points across 22 retailers

22 retailers$674 USD to $5,980 USD

A
Cheapest Retailer
-
$674 USD
A
Retailer 2
-
$733 USD
View
A
Retailer 3
-
$753 USD
View
Final sale: no returns
Retailer 4
-
$781 USD
View
Price last confirmed 17 days ago
A
Retailer 5
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$781 USD
View
A
Retailer 6
-
$960 USD
View
A
Retailer 7
-
$996 USD
View
A
Retailer 8
-
$1,029 USD
View
A
Retailer 9
-
$1,075 USD
HK$8,400 HKD
View
B+
Retailer 10
-
$1,273 USD
View
B+
Retailer 11
-
$1,385 USD
£1,090 GBP
View
B+
Retailer 12
-
$1,585 USD
ZAR 25,601 ZAR
View
B+
Retailer 13
-
$1,996 USD
View
B
Retailer 14
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$2,425 USD
View
B
Retailer 15
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$2,665 USD
View
B
Retailer 16
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$2,682 USD
£2,112 GBP
View
B
Retailer 17
-
$2,683 USD
View
B
Retailer 18
-
$3,086 USD
View
B
Retailer 19
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$3,106 USD
SGD 4,197 SGD
View
B
Retailer 20
-
$3,391 USD
£2,670 GBP
View
Price last confirmed 7 days ago
B
Retailer 21
-
$3,910 USD
View
Most Expensive
B
Do Amore Diamonds
27-4291426D9 · Nov 2
$5,980 USD
View
21 more retailers have this diamond
Prices start from $674 USDSave up to $5,306 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
$674 USD