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Radiant|Lab Grown|IGI

1.51ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG731569242

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

Certificate IGI LG731569242

Diamond specifications and retailer prices

From HK$1,938 HKD
$247 USD
As of October 30, 2026
Save HK$20,265 HKD (91%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: HK$22,203 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 D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG731569242 or 731569242. Listed at 17 retailers as of October 30, 2026, with prices from HK$1,938 to HK$22,203, a HK$20,265 spread on the same certified stone. Brilliant Earth lists it at HK$22,203. 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle45.8°
Pavilion angle35.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG731569242
Dimensions7.97 × 7.97 × 5.60 mm
L/W Ratio1.00
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
7.97 mm7.97 mm1.51 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG731569242
Side View
Table 64.0%Crown 45.8°Girdle: Slightly ThickPavilion 35.9°Culet: NoneDepth 70.7%

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$22,203 HKD|Low: HK$1,938 HKD|High: HK$25,577 HKD|Avg: HK$8,470 HKD|-13.2%
Brilliant Earth
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
October 31, 2026
Retailer 12HK$1,938 HKD
Retailer 4HK$2,244 HKD
Retailer 9HK$2,471 HKD
Retailer 13HK$3,656 HKD
Retailer 6HK$3,923 HKD
Retailer 16HK$4,025 HKD
Retailer 2HK$4,432 HKD
Retailer 11HK$6,160 HKD
Retailer 7HK$6,214 HKD
Retailer 15HK$7,744 HKD
Retailer 3HK$7,793 HKD
Retailer 17HK$8,513 HKD
Retailer 10HK$10,671 HKD
Retailer 8HK$12,846 HKD
Retailer 14HK$18,594 HKD
Retailer 5HK$19,418 HKD
Brilliant EarthHK$22,203 HKD

36 data points across 17 retailers

17 retailersHK$1,938 HKD to HK$22,203 HKD

A
Cheapest Retailer
-
HK$1,938 HKD
$247 USD
A
Retailer 2
-
HK$2,244 HKD
$286 USD
View
A
Retailer 3
-
HK$2,471 HKD
$315 USD
View
Final sale: no returns
A
Retailer 4
-
HK$3,656 HKD
$466 USD
View
Retailer 5
-
HK$3,923 HKD
$500 USD
View
Price last confirmed 9 days ago
A
Retailer 6
-
HK$4,025 HKD
$513 USD
View
A
Retailer 7
-
HK$4,432 HKD
€538 EUR
View
A
Retailer 8
-
HK$6,160 HKD
A$1,208 AUD
View
A
Retailer 9
-
HK$6,214 HKD
$792 USD
View
B+
Retailer 10
-
HK$7,744 HKD
$987 USD
View
A
Retailer 11
-
HK$7,793 HKD
$993 USD
View
B+
Retailer 12
-
HK$8,513 HKD
$1,085 USD
View
B+
Retailer 13
-
HK$10,671 HKD
£1,071 GBP
View
Retailer 14
-
HK$12,846 HKD
A$2,519 AUD
View
Price last confirmed 27 days ago
B
Retailer 15
-
HK$18,594 HKD
$2,370 USD
View
B
Retailer 16
-
HK$19,418 HKD
$2,475 USD
View
Most Expensive
B
Brilliant Earth
16112844Y · Oct 31
HK$22,203 HKD
$2,830 USD
View
16 more retailers have this diamond
Prices start from HK$1,938 HKDSave up to HK$20,265 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$1,938 HKD