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Radiant|Lab Grown|IGI

1.51ct E IF Radiant Lab Grown Diamond

ID • E/IF • IGI LG771614878

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

Certificate IGI LG771614878

Diamond specifications and retailer prices

From HK$2,275 HKD
$290 USD
As of October 30, 2026
Save HK$17,496 HKD (88%) vs most expensive(unlock to see where)
26 retailers carry this diamond
Most expensive: HK$19,771 HKD 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 IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG771614878 or 771614878. Listed at 26 retailers as of October 30, 2026, with prices from HK$2,275 to HK$19,771, a HK$17,496 spread on the same certified stone. Brilliant Earth lists it at HK$19,771. 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
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.8°
Pavilion angle34°
OriginLab Grown
Grading LabIGI
CertificateIGI LG771614878
Dimensions8.08 × 5.57 × 3.86 mm
L/W Ratio1.45
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
8.08 mm5.57 mm1.51 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG771614878
Side View
Table 65.0%Crown 42.8°Girdle: Slightly ThickPavilion 34°Culet: NoneDepth 69.3%

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: HK$19,771 HKD|Low: HK$2,275 HKD|High: HK$27,303 HKD|Avg: HK$8,332 HKD|-27.6%
Brilliant Earth
Retailer 2
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Retailer 25
October 31, 2026
Retailer 7HK$2,275 HKD
Retailer 8HK$2,534 HKD
Retailer 25HK$2,636 HKD
Retailer 14HK$2,817 HKD
Retailer 24HK$2,817 HKD
Retailer 13HK$2,911 HKD
Retailer 17HK$3,113 HKD
Retailer 23HK$4,041 HKD
Retailer 2HK$4,597 HKD
Retailer 12HK$4,637 HKD
Retailer 22HK$4,844 HKD
Retailer 6HK$4,856 HKD
Retailer 19HK$4,987 HKD
Retailer 21HK$6,553 HKD
Retailer 3HK$7,940 HKD
Retailer 5HK$8,662 HKD
Retailer 18HK$9,034 HKD
Retailer 4HK$9,062 HKD
Retailer 11HK$9,446 HKD
Retailer 16HK$10,843 HKD
Retailer 10HK$11,000 HKD
Retailer 20HK$11,359 HKD
Retailer 15HK$11,613 HKD
Retailer 9HK$17,849 HKD
Brilliant EarthHK$19,771 HKD

32 data points across 25 retailers

26 retailersHK$2,275 HKD to HK$19,771 HKD

A
Cheapest Retailer
-
HK$2,275 HKD
$290 USD
A
Retailer 2
-
HK$2,534 HKD
$323 USD
View
Final sale: no returns
A
Retailer 3
-
HK$2,636 HKD
$336 USD
View
A
Retailer 4
-
HK$2,817 HKD
$359 USD
View
A
Retailer 5
-
HK$2,817 HKD
$359 USD
View
A
Retailer 6
-
HK$2,911 HKD
£292 GBP
View
A
Retailer 7
-
HK$3,113 HKD
View
A
Retailer 8
-
HK$4,041 HKD
$515 USD
View
A
Retailer 9
-
HK$4,597 HKD
€558 EUR
View
A
Retailer 10
-
HK$4,637 HKD
$591 USD
View
A
Retailer 11
-
HK$4,844 HKD
ZAR 9,975 ZAR
View
A
Retailer 12
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HK$4,856 HKD
$619 USD
View
A
Retailer 13
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HK$4,987 HKD
£500 GBP
View
A
Retailer 14
-
HK$6,553 HKD
A$1,285 AUD
View
B+
Retailer 15
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HK$7,940 HKD
$1,012 USD
View
B+
Retailer 16
-
HK$8,662 HKD
$1,104 USD
View
B+
Retailer 17
-
HK$9,034 HKD
SGD 1,556 SGD
View
B+
Retailer 18
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HK$9,062 HKD
$1,155 USD
View
B+
Retailer 19
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HK$9,446 HKD
$1,204 USD
View
B+
Retailer 20
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HK$10,105 HKD
$1,288 USD
View
B+
Retailer 21
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HK$10,843 HKD
$1,382 USD
View
B+
Retailer 22
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HK$11,000 HKD
£1,104 GBP
View
B+
Retailer 23
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HK$11,359 HKD
£1,140 GBP
View
B+
Retailer 24
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HK$11,613 HKD
$1,480 USD
View
Retailer 25
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HK$17,849 HKD
$2,275 USD
View
Price last confirmed 12 days ago
Most Expensive
B
Brilliant Earth
19064245A · Oct 30
HK$19,771 HKD
$2,520 USD
View
25 more retailers have this diamond
Prices start from HK$2,275 HKDSave up to HK$17,496 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$2,275 HKD