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Radiant|Lab Grown|IGI

1.51ct E SI1 Radiant Lab Grown Diamond

ID • E/SI1 • IGI LG851617785

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

Certificate IGI LG851617785

Diamond specifications and retailer prices

From HK$7,054 HKD
As of November 6, 2026
Save HK$830 HKD (11%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: HK$7,883 HKD at MOH London · As of November 5, 2026
View at MOH London

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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG851617785 or 851617785. Listed at 2 retailers as of November 5, 2026, with a relatively tight 12% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.5°
Pavilion angle34.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG851617785
Dimensions8.15 × 5.65 × 3.86 mm
L/W Ratio1.44
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.15 mm5.65 mm1.51 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG851617785
Side View
Table 67.0%Crown 41.5°Girdle: MediumPavilion 34.8°Culet: NoneDepth 68.3%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 6
Current: HK$7,883 HKD|Low: HK$7,054 HKD|High: HK$7,883 HKD|Avg: HK$7,328 HKD|+3.8%
MOH London
Retailer 2
November 5, 2026
Retailer 2HK$7,054 HKD
MOH LondonHK$7,883 HKD

3 data points across 2 retailers

2 retailersHK$7,054 HKD to HK$7,883 HKD

B
Cheapest Retailer
-
HK$7,054 HKD
Most Expensive
B
MOH London
LG851617785 · Nov 5
HK$7,883 HKD
£792 GBP
View
1 more retailer has this diamond
Prices start from HK$7,054 HKDSave up to HK$830 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.

B
1.51ct Radiant
HK$7,054 HKD