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Marquise|Natural|GIA

0.51ct E SI2 Marquise Natural Diamond

EX • E/SI2 • GIA 6545321237

Certificate GIA 6545321237

Diamond specifications and retailer prices

From HK$5,774 HKD
As of November 5, 2026
Save HK$6,570 HKD (53%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: HK$12,344 HKD at Diamond Exchange Canada · As of November 5, 2026
View at Diamond Exchange Canada

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 SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6545321237. Listed at 11 retailers as of November 5, 2026, with prices from HK$5,774 to HK$12,344, a HK$6,570 spread on the same certified stone. Diamond Exchange Canada lists it at HK$12,344. 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 (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Pavilion angle41.3°
OriginNatural
Grading LabGIA
CertificateGIA 6545321237
Dimensions8.19 × 4.21 × 2.68 mm
L/W Ratio1.95
Top View
8.19 mm4.21 mm0.51 ctE / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6545321237
Side View
Table 58.0%CrownGirdle: MED-VTKPavilion 41.3°Culet: NoneDepth 63.5%

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$12,344 HKD|Low: HK$4,017 HKD|High: HK$12,344 HKD|Avg: HK$7,918 HKD
Diamond Exchange Canada
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
Retailer 15
Retailer 16
Retailer 17
Retailer 18
November 6, 2026
Retailer 10HK$4,017 HKD
Retailer 11HK$5,774 HKD
Retailer 15HK$6,386 HKD
Retailer 8HK$6,692 HKD
Retailer 5HK$6,786 HKD
Retailer 3HK$6,857 HKD
Retailer 13HK$6,990 HKD
Retailer 18HK$6,990 HKD
Retailer 9HK$7,257 HKD
Retailer 12HK$7,861 HKD
Retailer 16HK$8,363 HKD
Retailer 4HK$8,473 HKD
Retailer 7HK$8,473 HKD
Retailer 14HK$8,567 HKD
Retailer 6HK$8,708 HKD
Retailer 2HK$9,838 HKD
Retailer 17HK$11,627 HKD
Diamond Exchange CanadaHK$12,344 HKD

19 data points across 18 retailers

11 retailersHK$5,774 HKD to HK$12,344 HKD

A
Cheapest Retailer
-
HK$5,774 HKD
B+
Retailer 2
-
HK$6,386 HKD
View
B+
Retailer 3
-
HK$6,857 HKD
View
B+
Retailer 4
-
HK$6,990 HKD
View
B+
Retailer 5
-
HK$7,861 HKD
View
B
Retailer 6
-
HK$8,473 HKD
View
B
Retailer 7
-
HK$8,473 HKD
View
B
Retailer 8
-
HK$8,567 HKD
View
B+
Retailer 9
-
HK$8,708 HKD
View
B
Retailer 10
-
HK$9,838 HKD
View
Most Expensive
B
Diamond Exchange Canada
1982807032 · Nov 5
HK$12,344 HKD
CA$2,185 CAD
View
10 more retailers have this diamond
Prices start from HK$5,774 HKDSave up to HK$6,570 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$5,774 HKD