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Oval|Lab Grown|IGI

0.51ct D SI1 Oval Lab Grown Diamond

EX • D/SI1 • IGI LG764605608

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG764605608

Diamond specifications and retailer prices

From HK$674 HKD
As of November 1, 2026
Save HK$2,579 HKD (79%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: HK$6,191 HKD at MOH London · As of October 29, 2026
View at MOH London

About this 0.51ct lab-grown oval diamond

This 0.51ct lab-grown oval sits in the half to three-quarter carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG764605608 or 764605608. Listed at 15 retailers as of November 1, 2026, with a 383% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
D
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle32.5°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG764605608
Dimensions6.19 × 4.56 × 2.85 mm
L/W Ratio1.36
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
6.19 mm4.56 mm0.51 ctD / SI1
OriginLab Grown
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG764605608
Side View
Table 58.0%Crown 32.5°Girdle: STK-THKPavilion 40.8°Culet: NoneDepth 62.5%

Caratlytics Score

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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 1
Current: HK$6,191 HKD|Low: HK$651 HKD|High: HK$6,231 HKD|Avg: HK$1,958 HKD|-0.6%
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 2, 2026
Retailer 9HK$674 HKD
Retailer 13HK$760 HKD
Retailer 5HK$893 HKD
Retailer 12HK$893 HKD
Retailer 7HK$1,332 HKD
Retailer 6HK$1,513 HKD
Retailer 10HK$1,607 HKD
Retailer 3HK$1,787 HKD
Retailer 2HK$1,795 HKD
Retailer 8HK$2,022 HKD
Retailer 11HK$2,194 HKD
Retailer 4HK$3,253 HKD
MOH LondonHK$6,191 HKD

41 data points across 13 retailers

15 retailersHK$674 HKD to HK$3,253 HKD

A
Cheapest Retailer
-
HK$674 HKD
A
Retailer 2
-
HK$784 HKD
View
A
Retailer 3
-
HK$893 HKD
View
Retailer 4
-
HK$893 HKD
View
Price last confirmed 12 days ago
A
Retailer 5
-
HK$1,332 HKD
View
A
Retailer 6
-
HK$1,513 HKD
View
A
Retailer 7
-
HK$1,607 HKD
View
A
Retailer 8
-
HK$1,787 HKD
View
B+
Retailer 9
-
HK$1,795 HKD
View
A
Retailer 10
-
HK$2,022 HKD
View
B+
Retailer 11
-
HK$2,194 HKD
View
B+
Retailer 12
-
HK$2,696 HKD
View
B
Retailer 13
-
HK$3,158 HKD
View
B
Retailer 14
-
HK$3,253 HKD
View
Most Expensive
MOH London
LG764605608 · Oct 29
HK$6,191 HKD
£622 GBP
View
Price last confirmed 8 days ago
14 more retailers have this diamond
Prices start from HK$674 HKDSave up to HK$2,579 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 Oval
HK$674 HKD