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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 $1,158 NZD
HK$5,100 HKD
As of October 30, 2026
Save $4,697 NZD (80%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $5,855 NZD at Brilliant Earth · As of October 30, 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 30, 2026, with prices from $1,158 to $5,855, a $4,697 spread on the same certified stone. Brilliant Earth lists it at $5,855. 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
Colour
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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $5,855 NZD|Low: $1,158 NZD|High: $7,008 NZD|Avg: $2,975 NZD|-16.5%
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$1,158 NZD
Retailer 4$1,428 NZD
Retailer 11$1,430 NZD
Retailer 8$1,550 NZD
Retailer 2$1,674 NZD
Retailer 6$1,736 NZD
Retailer 3$1,902 NZD
Retailer 13$2,358 NZD
Retailer 12$3,303 NZD
Retailer 5$3,483 NZD
Retailer 7$3,716 NZD
Retailer 10$3,781 NZD
Brilliant Earth$5,855 NZD

42 data points across 13 retailers

14 retailers$1,158 NZD to $5,855 NZD

A
Cheapest Retailer
-
$1,158 NZD
HK$5,100 HKD
A
Retailer 2
-
$1,428 NZD
$805 USD
View
A
Retailer 3
-
$1,430 NZD
$806 USD
View
Retailer 4
-
$1,550 NZD
€832 EUR
View
Price last confirmed 7 days ago
A
Retailer 5
-
$1,674 NZD
£743 GBP
View
A
Retailer 6
-
$1,736 NZD
ZAR 15,810 ZAR
View
B+
Retailer 7
-
$1,902 NZD
$1,072 USD
View
B+
Retailer 8
-
$2,358 NZD
$1,329 USD
View
B
Retailer 9
-
$3,303 NZD
$1,862 USD
View
B
Retailer 10
-
$3,483 NZD
$1,963 USD
View
B
Retailer 11
-
$3,716 NZD
£1,649 GBP
View
B+
Retailer 12
-
$3,781 NZD
$2,131 USD
View
Retailer 13
-
$5,801 NZD
$3,269 USD
View
Price last confirmed 72 days ago
Most Expensive
B
Brilliant Earth
18919100A · Oct 30
$5,855 NZD
$3,300 USD
View
13 more retailers have this diamond
Prices start from $1,158 NZDSave up to $4,697 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
1.51ct Radiant
$1,158 NZD