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0.51ct F I1 Round Lab Grown Diamond

EX • F/I1 • IGI LG816670138

Shape and cutting style on the report: Round brilliant

Certificate IGI LG816670138

Diamond specifications and retailer prices

From HK$628 HKD
$80 USD
As of November 1, 2026
Save HK$5,122 HKD (89%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: HK$5,750 HKD at MOH London · As of November 1, 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 F colour (colourless) and I1 clarity (included), with a top-tier cut grade and certified by IGI LG816670138 or 816670138. Listed at 9 retailers as of November 1, 2026, with prices from HK$628 to HK$5,750, a HK$5,122 spread on the same certified stone. MOH London lists it at HK$5,750. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

0.51
Carat
F
Colour
I1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle35.2°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG816670138
Dimensions5.07 × 5.13 × 3.09 mm
L/W Ratio1.01
Girdle conditionFaceted
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
5.07 mm5.13 mm0.51 ctF / I1
OriginLab Grown
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG816670138
Side View
Table 61.0%Crown 35.2°Girdle: Slightly ThickPavilion 40.2°Culet: NoneDepth 60.4%

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 1
Current: HK$5,750 HKD|Low: HK$628 HKD|High: HK$5,779 HKD|Avg: HK$1,954 HKD|-0.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 9HK$628 HKD
Retailer 5HK$730 HKD
Retailer 3HK$832 HKD
Retailer 7HK$832 HKD
Retailer 8HK$1,703 HKD
Retailer 4HK$2,519 HKD
Retailer 2HK$2,801 HKD
Retailer 6HK$3,209 HKD
MOH LondonHK$5,750 HKD

7 data points across 9 retailers

9 retailersHK$628 HKD to HK$5,750 HKD

A
Cheapest Retailer
-
HK$628 HKD
$80 USD
B+
Retailer 2
-
HK$730 HKD
$93 USD
View
B+
Retailer 3
-
HK$832 HKD
$106 USD
View
Retailer 4
-
HK$832 HKD
$106 USD
View
Price last confirmed 8 days ago
B+
Retailer 5
-
HK$1,703 HKD
$217 USD
View
B+
Retailer 6
-
HK$2,519 HKD
$321 USD
View
B+
Retailer 7
-
HK$2,801 HKD
$357 USD
View
B+
Retailer 8
-
HK$3,209 HKD
$409 USD
View
Most Expensive
B
MOH London
LG816670138 · Nov 1
HK$5,750 HKD
£577 GBP
View
8 more retailers have this diamond
Prices start from HK$628 HKDSave up to HK$5,122 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$628 HKD