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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 HK$5,122 HKD
As of October 31, 2026
Save HK$17,395 HKD (77%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: HK$22,517 HKD at Brilliant Earth · As of October 31, 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 31, 2026, with prices from HK$5,122 to HK$22,517, a HK$17,395 spread on the same certified stone. Brilliant Earth lists it at HK$22,517. 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: HK$22,517 HKD|Low: HK$5,122 HKD|High: HK$30,991 HKD|Avg: HK$14,065 HKD|-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 5HK$5,122 HKD
Retailer 9HK$6,316 HKD
Retailer 2HK$6,870 HKD
Retailer 3HK$7,400 HKD
Retailer 8HK$8,411 HKD
Retailer 7HK$10,425 HKD
Retailer 6HK$14,606 HKD
Retailer 10HK$15,401 HKD
Retailer 4HK$16,431 HKD
Brilliant EarthHK$22,517 HKD

42 data points across 10 retailers

10 retailersHK$5,122 HKD to HK$22,517 HKD

A
Cheapest Retailer
-
HK$5,122 HKD
A
Retailer 2
-
HK$6,316 HKD
$805 USD
View
A
Retailer 3
-
HK$6,870 HKD
€834 EUR
View
A
Retailer 4
-
HK$7,400 HKD
£743 GBP
View
B+
Retailer 5
-
HK$8,411 HKD
$1,072 USD
View
B+
Retailer 6
-
HK$10,425 HKD
$1,329 USD
View
B
Retailer 7
-
HK$14,606 HKD
$1,862 USD
View
B
Retailer 8
-
HK$15,401 HKD
$1,963 USD
View
B
Retailer 9
-
HK$16,431 HKD
£1,649 GBP
View
Most Expensive
B
Brilliant Earth
20788319A · Oct 31
HK$22,517 HKD
$2,870 USD
View
9 more retailers have this diamond
Prices start from HK$5,122 HKDSave up to HK$17,395 HKD

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
HK$5,122 HKD