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Marquise|Natural|GIA

0.51ct E SI1 Marquise Natural Diamond

EX • E/SI1 • GIA 6565212812

Certificate GIA 6565212812

Diamond specifications and retailer prices

From HK$4,574 HKD
As of November 6, 2026
Save HK$13,862 HKD (75%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: HK$20,933 HKD at MOH London · As of November 2, 2026
View at MOH London

About this 0.51ct natural marquise diamond

This 0.51ct natural marquise sits in the half to three-quarter carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6565212812. Listed at 15 retailers as of November 5, 2026, with a 303% 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
E
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6565212812
Dimensions8.68 × 4.06 × 2.46 mm
L/W Ratio2.14
Culet sizeNone
Top View
8.68 mm4.06 mm0.51 ctE / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 6565212812
Side View
Table 59.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 60.7%

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 6
Current: HK$20,933 HKD|Low: HK$4,574 HKD|High: HK$20,933 HKD|Avg: HK$8,847 HKD
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
Retailer 14
November 6, 2026
Retailer 2HK$4,574 HKD
Retailer 6HK$5,727 HKD
Retailer 7HK$8,002 HKD
Retailer 8HK$8,449 HKD
Retailer 4HK$10,473 HKD
Retailer 10HK$11,030 HKD
Retailer 13HK$11,948 HKD
Retailer 3HK$12,160 HKD
Retailer 14HK$12,631 HKD
Retailer 5HK$13,784 HKD
Retailer 11HK$14,663 HKD
Retailer 12HK$14,702 HKD
Retailer 9HK$18,436 HKD
MOH LondonHK$20,933 HKD

39 data points across 14 retailers

15 retailersHK$4,574 HKD to HK$18,436 HKD

A
Cheapest Retailer
-
HK$4,574 HKD
A
Retailer 2
-
HK$5,570 HKD
View
Retailer 3
-
HK$5,727 HKD
View
Price last confirmed 18 days ago
B+
Retailer 4
-
HK$8,002 HKD
View
B+
Retailer 5
-
HK$8,449 HKD
View
B
Retailer 6
-
HK$10,473 HKD
View
B
Retailer 7
-
HK$11,030 HKD
View
Final sale: no returns
B
Retailer 8
-
HK$11,948 HKD
View
B
Retailer 9
-
HK$12,160 HKD
View
B
Retailer 10
-
HK$12,631 HKD
View
B
Retailer 11
-
HK$13,784 HKD
View
B
Retailer 12
-
HK$14,663 HKD
View
B
Retailer 13
-
HK$14,702 HKD
View
C
Retailer 14
-
HK$18,436 HKD
View
Most Expensive
MOH London
239CFF363 · Nov 2
HK$20,933 HKD
£2,101 GBP
View
Price under review
14 more retailers have this diamond
Prices start from HK$4,574 HKDSave up to HK$13,862 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 Marquise
HK$4,574 HKD