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Radiant|Lab Grown|IGI

1.51ct E FL Radiant Lab Grown Diamond

ID • E/FL • IGI LG818669625

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

Certificate IGI LG818669625

Diamond specifications and retailer prices

From HK$3,436 HKD
$438 USD
As of October 30, 2026
Save HK$22,690 HKD (87%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: HK$26,832 HKD at Rare Carat · As of October 18, 2026
View at Rare Carat

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 LG818669625 or 818669625. Listed at 22 retailers as of October 30, 2026, with a 660% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.8°
Pavilion angle36.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818669625
Dimensions7.78 × 5.75 × 3.93 mm
L/W Ratio1.35
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
7.78 mm5.75 mm1.51 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818669625
Side View
Table 61.0%Crown 42.8°Girdle: MediumPavilion 36.8°Culet: NoneDepth 68.3%

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: HK$26,832 HKD|Low: HK$3,436 HKD|High: HK$29,971 HKD|Avg: HK$10,548 HKD|-0.3%
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Retailer 22
October 31, 2026
Retailer 12HK$3,436 HKD
Retailer 2HK$3,844 HKD
Retailer 3HK$3,852 HKD
Retailer 11HK$4,260 HKD
Retailer 22HK$4,260 HKD
Retailer 18HK$4,403 HKD
Retailer 21HK$6,433 HKD
Retailer 5HK$6,708 HKD
Retailer 4HK$6,796 HKD
Retailer 13HK$7,043 HKD
Retailer 20HK$7,327 HKD
Retailer 7HK$8,348 HKD
Retailer 6HK$10,286 HKD
Retailer 8HK$12,435 HKD
Retailer 10HK$13,706 HKD
Retailer 9HK$13,969 HKD
Retailer 15HK$14,921 HKD
Retailer 14HK$15,401 HKD
Retailer 19HK$15,753 HKD
Retailer 17HK$16,398 HKD
Retailer 16HK$26,126 HKD
Rare CaratHK$26,832 HKD

23 data points across 22 retailers

22 retailersHK$3,436 HKD to HK$26,126 HKD

A
Cheapest Retailer
-
HK$3,436 HKD
$438 USD
A
Retailer 2
-
HK$3,844 HKD
$490 USD
View
Final sale: no returns
A
Retailer 3
-
HK$3,852 HKD
$491 USD
View
A
Retailer 4
-
HK$4,260 HKD
$543 USD
View
A
Retailer 5
-
HK$4,260 HKD
$543 USD
View
A
Retailer 6
-
HK$4,403 HKD
£442 GBP
View
A
Retailer 7
-
HK$6,433 HKD
$820 USD
View
A
Retailer 8
-
HK$6,708 HKD
$855 USD
View
Retailer 9
-
HK$6,796 HKD
€825 EUR
View
Price last confirmed 8 days ago
A
Retailer 10
-
HK$7,043 HKD
£707 GBP
View
A
Retailer 11
-
HK$7,327 HKD
ZAR 15,088 ZAR
View
A
Retailer 12
-
HK$8,348 HKD
$1,064 USD
View
B+
Retailer 13
-
HK$10,286 HKD
$1,311 USD
View
B+
Retailer 14
-
HK$12,435 HKD
£1,248 GBP
View
B+
Retailer 15
-
HK$13,706 HKD
$1,747 USD
View
B+
Retailer 16
-
HK$13,969 HKD
$1,781 USD
View
B+
Retailer 17
-
HK$14,921 HKD
SGD 2,570 SGD
View
B
Retailer 18
-
HK$15,401 HKD
$1,963 USD
View
B+
Retailer 19
-
HK$15,753 HKD
£1,581 GBP
View
B+
Retailer 20
-
HK$16,398 HKD
$2,090 USD
View
B
Retailer 21
-
HK$26,126 HKD
$3,330 USD
View
Most Expensive
Rare Carat
VR-225541 · Oct 18
HK$26,832 HKD
$3,420 USD
View
Price last confirmed 13 days ago
21 more retailers have this diamond
Prices start from HK$3,436 HKDSave up to HK$22,690 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$3,436 HKD