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0.51ct E SI2 Round Lab Grown Diamond

EX • E/SI2 • IGI LG816670139

Shape and cutting style on the report: Round brilliant

Certificate IGI LG816670139

Diamond specifications and retailer prices

From HK$722 HKD
As of November 5, 2026
Save HK$5,814 HKD (89%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: HK$6,536 HKD at MOH London · As of November 4, 2026
View at MOH London

About this 0.51ct lab-grown round diamond

This 0.51ct lab-grown round sits in the half to three-quarter carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG816670139 or 816670139. Listed at 12 retailers as of November 4, 2026, with prices from HK$722 to HK$6,536, a HK$5,814 spread on the same certified stone. MOH London lists it at HK$6,536. 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

0.51
Carat
E
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.1°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG816670139
Dimensions5.11 × 5.14 × 3.14 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
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
5.11 mm5.14 mm0.51 ctE / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG816670139
Side View
Table 60.0%Crown 34.1°Girdle: MED-STKPavilion 41.1°Culet: NoneDepth 61.2%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: HK$6,536 HKD|Low: HK$377 HKD|High: HK$6,636 HKD|Avg: HK$2,021 HKD|-0.3%
MOH London
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 4, 2026
Retailer 4HK$377 HKD
Retailer 7HK$722 HKD
Retailer 11HK$800 HKD
Retailer 3HK$832 HKD
Retailer 8HK$949 HKD
Retailer 13HK$949 HKD
Retailer 2HK$1,255 HKD
Retailer 9HK$1,859 HKD
Retailer 5HK$2,542 HKD
Retailer 12HK$2,871 HKD
Retailer 6HK$3,201 HKD
Retailer 10HK$3,303 HKD
MOH LondonHK$6,536 HKD

17 data points across 13 retailers

12 retailersHK$722 HKD to HK$6,536 HKD

A
Cheapest Retailer
-
HK$722 HKD
A
Retailer 2
-
HK$800 HKD
View
Final sale: no returns
A
Retailer 3
-
HK$832 HKD
View
A
Retailer 4
-
HK$949 HKD
View
Retailer 5
-
HK$949 HKD
View
Price last confirmed 12 days ago
A
Retailer 6
-
HK$1,255 HKD
View
B+
Retailer 7
-
HK$1,859 HKD
View
B+
Retailer 8
-
HK$2,542 HKD
View
B+
Retailer 9
-
HK$2,871 HKD
View
B
Retailer 10
-
HK$3,201 HKD
View
B
Retailer 11
-
HK$3,303 HKD
View
Most Expensive
B
MOH London
LG816670139 · Nov 4
HK$6,536 HKD
£656 GBP
View
11 more retailers have this diamond
Prices start from HK$722 HKDSave up to HK$5,814 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
0.51ct Round
HK$722 HKD