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Marquise|Natural|GIA

0.51ct E SI2 Marquise Natural Diamond

GD • E/SI2 • GIA 6515228594

Certificate GIA 6515228594

Diamond specifications and retailer prices

From HK$7,296 HKD
As of November 1, 2026
Save HK$8,700 HKD (54%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: HK$21,370 HKD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

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 standard cut grade stated by the retailer rather than the lab and certified by GIA 6515228594. Listed at 18 retailers as of November 1, 2026, with a 119% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.51
Carat
E
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6515228594
Dimensions8.63 × 4.00 × 2.54 mm
L/W Ratio2.16
Top View
8.63 mm4.00 mm0.51 ctE / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6515228594
Side View
Table 58.0%CrownGirdle: THN-THKPavilionCulet: NoneDepth 63.4%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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$11,297 HKD|Low: HK$6,104 HKD|High: HK$16,240 HKD|Avg: HK$9,914 HKD|+2.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 4HK$7,296 HKD
Retailer 5HK$7,327 HKD
Retailer 6HK$7,790 HKD
Retailer 2HK$9,885 HKD
Retailer 1HK$11,297 HKD
Retailer 3HK$15,996 HKD

44 data points across 6 retailers

18 retailersHK$7,296 HKD to HK$15,996 HKD

B+
Cheapest Retailer
-
HK$7,296 HKD
B+
Retailer 2
-
HK$7,327 HKD
View
Final sale: no returns
B
Retailer 3
-
HK$7,759 HKD
View
B
Retailer 4
-
HK$7,759 HKD
View
B
Retailer 5
-
HK$7,790 HKD
View
Retailer 6
-
HK$7,939 HKD
View
Price last confirmed 8 days ago
B
Retailer 7
-
HK$7,939 HKD
View
B
Retailer 8
-
HK$8,245 HKD
View
B
Retailer 9
-
HK$9,155 HKD
View
B
Retailer 10
-
HK$9,650 HKD
View
B
Retailer 11
-
HK$9,650 HKD
View
B
Retailer 12
-
HK$9,877 HKD
View
B
Retailer 13
-
HK$9,885 HKD
View
B
Retailer 14
-
HK$9,963 HKD
View
B
Retailer 15
-
HK$11,297 HKD
View
C
Retailer 16
-
HK$14,223 HKD
View
B
Retailer 17
-
HK$15,996 HKD
View
Most Expensive
NZ Jewellers
029c039f-5a5a-4872-8f70-5be64ca9e69e · Nov 5
HK$21,370 HKD
$2,724 USD
View
Price under review
17 more retailers have this diamond
Prices start from HK$7,296 HKDSave up to HK$8,700 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.

B+
0.51ct Marquise
HK$7,296 HKD