Radiant|Lab Grown|IGI

1.51ct D IF Radiant Lab Grown Diamond

EX • D/IF • IGI LG751506389

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

Certificate IGI LG751506389

Diamond specifications and retailer prices

From HK$2,416 HKD
$308 USD
As of November 1, 2026
Save HK$19,903 HKD (89%) vs most expensive(unlock to see where)
29 retailers carry this diamond
Most expensive: HK$34,286 HKD at Brilliant Earth · As of October 24, 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 D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG751506389 or 751506389. Listed at 29 retailers as of October 27, 2026, with a 824% 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
D
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.4°
Pavilion angle34.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG751506389
Dimensions8.52 × 5.64 × 3.72 mm
L/W Ratio1.51
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
8.52 mm5.64 mm1.51 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG751506389
Side View
Table 62.0%Crown 38.4°Girdle: MediumPavilion 34.7°Culet: NoneDepth 66.0%

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: Nov 1
Current: HK$22,203 HKD|Low: HK$2,385 HKD|High: HK$34,286 HKD|Avg: HK$8,158 HKD|-35.2%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
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Retailer 11
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Retailer 20
Retailer 21
Retailer 22
Retailer 23
Retailer 24
Retailer 25
Retailer 26
November 1, 2026
Retailer 14HK$2,385 HKD
Retailer 8HK$2,416 HKD
Retailer 11HK$2,770 HKD
Retailer 16HK$2,958 HKD
Retailer 18HK$2,958 HKD
Retailer 13HK$3,132 HKD
Retailer 7HK$3,816 HKD
Retailer 21HK$3,915 HKD
Retailer 25HK$3,923 HKD
Retailer 26HK$4,731 HKD
Retailer 12HK$4,992 HKD
Retailer 24HK$5,089 HKD
Retailer 20HK$5,263 HKD
Retailer 6HK$6,159 HKD
Retailer 23HK$6,905 HKD
Retailer 4HK$8,246 HKD
Retailer 15HK$9,517 HKD
Retailer 19HK$9,890 HKD
Retailer 5HK$10,317 HKD
Retailer 10HK$11,083 HKD
Retailer 9HK$11,238 HKD
Retailer 17HK$11,479 HKD
Retailer 2HK$11,867 HKD
Retailer 3HK$19,222 HKD
Retailer 22HK$19,261 HKD
Brilliant EarthHK$22,203 HKD

25 data points across 26 retailers

29 retailersHK$2,416 HKD to HK$22,319 HKD

Retailer 1
-
HK$2,385 HKD
$304 USD
Price last confirmed 11 days ago
A
Retailer 2
-
HK$2,416 HKD
$308 USD
View
Final sale: no returns
Retailer 3
-
HK$2,770 HKD
$353 USD
View
Price last confirmed 12 days ago
Retailer 4
-
HK$2,958 HKD
$377 USD
View
Price last confirmed 16 days ago
Retailer 5
-
HK$2,958 HKD
$377 USD
View
Price last confirmed 10 days ago
A
Retailer 6
-
HK$3,132 HKD
£314 GBP
View
A
Retailer 7
-
HK$3,816 HKD
View
A
Retailer 8
-
HK$3,915 HKD
$499 USD
View
A
Retailer 9
-
HK$3,923 HKD
$500 USD
View
A
Retailer 10
-
HK$4,731 HKD
$603 USD
View
Retailer 11
-
HK$4,992 HKD
€606 EUR
View
Price last confirmed 9 days ago
A
Retailer 12
-
HK$5,089 HKD
ZAR 10,478 ZAR
View
A
Retailer 13
-
HK$5,263 HKD
£528 GBP
View
A
Retailer 14
-
HK$6,159 HKD
$785 USD
View
A
Retailer 15
-
HK$6,905 HKD
A$1,354 AUD
View
A
Retailer 16
-
HK$8,246 HKD
$1,051 USD
View
Retailer 17
-
HK$9,517 HKD
$1,213 USD
View
Price last confirmed 10 days ago
B+
Retailer 18
-
HK$9,890 HKD
$1,261 USD
View
B+
Retailer 19
-
HK$10,042 HKD
$1,280 USD
View
B+
Retailer 20
-
HK$10,317 HKD
$1,315 USD
View
B+
Retailer 21
-
HK$11,083 HKD
SGD 1,909 SGD
View
B+
Retailer 22
-
HK$11,238 HKD
$1,432 USD
View
Retailer 23
-
HK$11,479 HKD
£1,152 GBP
View
Price last confirmed 11 days ago
B+
Retailer 24
-
HK$11,867 HKD
£1,191 GBP
View
B
Retailer 25
-
HK$19,222 HKD
$2,450 USD
View
B+
Retailer 26
-
HK$19,261 HKD
$2,455 USD
View
B
Retailer 27
-
HK$22,203 HKD
$2,830 USD
View
B
Retailer 28
-
HK$22,319 HKD
£2,240 GBP
View
Most Expensive
Brilliant Earth
16638583A · Oct 24
HK$34,286 HKD
$4,370 USD
View
Price last confirmed 8 days ago
28 more retailers have this diamond
Prices start from HK$2,416 HKDSave up to HK$19,903 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$2,416 HKD