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Radiant|Lab Grown|IGI

1.51ct D SI1 Radiant Lab Grown Diamond

ID • D/SI1 • IGI LG542235603

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

Certificate IGI LG542235603

Diamond specifications and retailer prices

From HK$2,006 HKD
As of November 6, 2026
Save HK$7,712 HKD (79%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: HK$9,718 HKD at Brilliant Earth · As of November 6, 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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG542235603 or 542235603. Listed at 5 retailers as of November 6, 2026, with prices from HK$2,006 to HK$9,718, a HK$7,712 spread on the same certified stone. Brilliant Earth lists it at HK$9,718. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.51
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44°
Pavilion angle33.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG542235603
Dimensions7.78 × 5.58 × 3.93 mm
L/W Ratio1.39
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
7.78 mm5.58 mm1.51 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG542235603
Side View
Table 64.5%Crown 44°Girdle: Slightly ThickPavilion 33.3°Culet: NoneDepth 70.4%

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 6
Current: HK$9,718 HKD|Low: HK$1,270 HKD|High: HK$15,832 HKD|Avg: HK$4,659 HKD|-38.6%
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
November 6, 2026
Retailer 9HK$1,270 HKD
Retailer 6HK$2,006 HKD
Retailer 10HK$2,343 HKD
Retailer 7HK$2,351 HKD
Retailer 11HK$2,649 HKD
Retailer 2HK$2,970 HKD
Retailer 12HK$3,707 HKD
Retailer 5HK$4,420 HKD
Retailer 3HK$4,687 HKD
Retailer 4HK$5,000 HKD
Retailer 8HK$6,646 HKD
Retailer 13HK$8,010 HKD
Brilliant EarthHK$9,718 HKD

12 data points across 13 retailers

5 retailersHK$2,006 HKD to HK$9,718 HKD

A
Cheapest Retailer
-
HK$2,006 HKD
B+
Retailer 2
-
HK$2,351 HKD
View
A
Retailer 3
-
HK$2,970 HKD
View
B+
Retailer 4
-
HK$5,972 HKD
View
Most Expensive
B
Brilliant Earth
16423023A · Nov 6
HK$9,718 HKD
$1,240 USD
View
4 more retailers have this diamond
Prices start from HK$2,006 HKDSave up to HK$7,712 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$2,006 HKD