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Radiant|Lab Grown|IGI

1.51ct E FL Radiant Lab Grown Diamond

EX • E/FL • IGI LG800679081

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

Certificate IGI LG800679081

Diamond specifications and retailer prices

From $1,158 NZD
HK$5,100 HKD
As of October 31, 2026
Save $3,934 NZD (77%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $5,092 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 LG800679081 or 800679081. Listed at 10 retailers as of October 30, 2026, with prices from $1,158 to $5,092, a $3,934 spread on the same certified stone. Brilliant Earth lists it at $5,092. 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 angle45.7°
Pavilion angle33.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG800679081
Dimensions8.12 × 5.86 × 3.72 mm
L/W Ratio1.39
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
8.12 mm5.86 mm1.51 ctE / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG800679081
Side View
Table 59.0%Crown 45.7°Girdle: Slightly ThickPavilion 33.4°Culet: NoneDepth 63.5%

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 31
Current: $5,092 NZD|Low: $1,158 NZD|High: $7,008 NZD|Avg: $3,181 NZD|-27.3%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 31, 2026
Retailer 5$1,158 NZD
Retailer 9$1,428 NZD
Retailer 2$1,554 NZD
Retailer 3$1,674 NZD
Retailer 8$1,902 NZD
Retailer 7$2,358 NZD
Retailer 6$3,303 NZD
Retailer 10$3,483 NZD
Retailer 4$3,716 NZD
Brilliant Earth$5,092 NZD

42 data points across 10 retailers

10 retailers$1,158 NZD to $5,092 NZD

A
Cheapest Retailer
-
$1,158 NZD
HK$5,100 HKD
A
Retailer 2
-
$1,428 NZD
$805 USD
View
A
Retailer 3
-
$1,554 NZD
€834 EUR
View
A
Retailer 4
-
$1,674 NZD
£743 GBP
View
B+
Retailer 5
-
$1,902 NZD
$1,072 USD
View
B+
Retailer 6
-
$2,358 NZD
$1,329 USD
View
B
Retailer 7
-
$3,303 NZD
$1,862 USD
View
B
Retailer 8
-
$3,483 NZD
$1,963 USD
View
B
Retailer 9
-
$3,716 NZD
£1,649 GBP
View
Most Expensive
B
Brilliant Earth
20788319A · Oct 30
$5,092 NZD
$2,870 USD
View
9 more retailers have this diamond
Prices start from $1,158 NZDSave up to $3,934 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