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Radiant|Lab Grown|IGI

1.51ct E FL Radiant Lab Grown Diamond

EX • E/FL • IGI LG768630808

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

Certificate IGI LG768630808

Diamond specifications and retailer prices

From $653 USD
HK$5,100 HKD
As of October 30, 2026
Save $3,167 USD (83%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $3,820 USD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.51ct lab-grown radiant diamond

This 1.51ct lab-grown radiant sits in the one-and-a-half to two carat band, graded E colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG768630808 or 768630808. Listed at 14 retailers as of October 29, 2026, with prices from $653 to $3,820, a $3,167 spread on the same certified stone. Brilliant Earth lists it at $3,820. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
E
Color
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.1°
Pavilion angle34.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG768630808
Dimensions8.44 × 5.78 × 3.73 mm
L/W Ratio1.46
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
8.44 mm5.78 mm1.51 ctE / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG768630808
Side View
Table 62.0%Crown 40.1°Girdle: Slightly ThickPavilion 34.1°Culet: NoneDepth 64.5%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $3,820 USD|Low: $653 USD|High: $3,950 USD|Avg: $1,676 USD|-3.3%
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
October 30, 2026
Retailer 9$653 USD
Retailer 4$805 USD
Retailer 11$806 USD
Retailer 8$874 USD
Retailer 2$943 USD
Retailer 6$979 USD
Retailer 3$1,072 USD
Retailer 13$1,329 USD
Retailer 12$1,862 USD
Retailer 5$1,963 USD
Retailer 7$2,094 USD
Retailer 10$2,131 USD
Brilliant Earth$3,820 USD

42 data points across 13 retailers

14 retailers$653 USD to $3,820 USD

A
Cheapest Retailer
-
$653 USD
HK$5,100 HKD
A
Retailer 2
-
$805 USD
View
A
Retailer 3
-
$806 USD
View
A
Retailer 4
-
$874 USD
€832 EUR
View
Price last confirmed 7 days ago
A
Retailer 5
-
$943 USD
£743 GBP
View
A
Retailer 6
-
$979 USD
ZAR 15,810 ZAR
View
B+
Retailer 7
-
$1,072 USD
View
B+
Retailer 8
-
$1,329 USD
View
B
Retailer 9
-
$1,862 USD
View
B
Retailer 10
-
$1,963 USD
View
B
Retailer 11
-
$2,094 USD
£1,649 GBP
View
B+
Retailer 12
-
$2,131 USD
View
Retailer 13
-
$3,269 USD
View
Price last confirmed 71 days ago
Most Expensive
B
Brilliant Earth
18919100A · Oct 29
$3,820 USD
View
13 more retailers have this diamond
Prices start from $653 USDSave up to $3,167 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
1.51ct Radiant
$653 USD