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Marquise|Natural|GIA

0.51ct E SI1 Marquise Natural Diamond

EX • E/SI1 • GIA 6552974932

Certificate GIA 6552974932

Diamond specifications and retailer prices

From HK$4,875 HKD
₹59,174 INR
As of October 31, 2026
Save HK$6,972 HKD (59%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: HK$20,171 HKD at NZ Jewellers · As of October 30, 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 SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6552974932. Listed at 22 retailers as of October 29, 2026, with a 143% 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
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6552974932
Dimensions8.17 × 4.19 × 2.55 mm
L/W Ratio1.95
Culet sizeNone
Key to symbols
Feather
Top View
8.17 mm4.19 mm0.51 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6552974932
Side View
Table 58.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 60.9%

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: Oct 31
Current: HK$20,171 HKD|Low: HK$4,820 HKD|High: HK$20,171 HKD|Avg: HK$7,840 HKD
NZ Jewellers
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
Retailer 19
Retailer 20
October 31, 2026
Retailer 2HK$4,875 HKD
Retailer 13HK$4,921 HKD
Retailer 12HK$5,743 HKD
Retailer 6HK$5,931 HKD
Retailer 5HK$6,394 HKD
Retailer 3HK$6,433 HKD
Retailer 19HK$6,433 HKD
Retailer 7HK$6,528 HKD
Retailer 20HK$6,677 HKD
Retailer 11HK$6,793 HKD
Retailer 4HK$7,422 HKD
Retailer 9HK$7,475 HKD
Retailer 8HK$7,508 HKD
Retailer 10HK$7,728 HKD
Retailer 14HK$7,743 HKD
Retailer 17HK$7,921 HKD
Retailer 15HK$9,095 HKD
Retailer 16HK$9,930 HKD
Retailer 18HK$11,847 HKD
NZ JewellersHK$20,171 HKD

26 data points across 20 retailers

22 retailersHK$4,875 HKD to HK$11,847 HKD

A
Cheapest Retailer
-
HK$4,875 HKD
₹59,174 INR
A
Retailer 2
-
HK$4,921 HKD
View
A
Retailer 3
-
HK$5,743 HKD
$732 USD
View
A
Retailer 4
-
HK$5,931 HKD
$756 USD
View
Final sale: no returns
A
Retailer 5
-
HK$6,056 HKD
A$1,187 AUD
View
Retailer 6
-
HK$6,394 HKD
$815 USD
View
Price last confirmed 13 days ago
A
Retailer 7
-
HK$6,433 HKD
$820 USD
View
A
Retailer 8
-
HK$6,433 HKD
$820 USD
View
B+
Retailer 9
-
HK$6,528 HKD
$832 USD
View
B+
Retailer 10
-
HK$6,677 HKD
$851 USD
View
B+
Retailer 11
-
HK$6,793 HKD
SGD 1,170 SGD
View
B+
Retailer 12
-
HK$7,422 HKD
$946 USD
View
B+
Retailer 13
-
HK$7,475 HKD
$953 USD
View
B+
Retailer 14
-
HK$7,508 HKD
$957 USD
View
B+
Retailer 15
-
HK$7,728 HKD
$985 USD
View
B+
Retailer 16
-
HK$7,743 HKD
£777 GBP
View
B+
Retailer 17
-
HK$7,921 HKD
£795 GBP
View
B+
Retailer 18
-
HK$9,095 HKD
€1,104 EUR
View
Retailer 19
-
HK$9,829 HKD
A$1,927 AUD
View
Price last confirmed 28 days ago
B+
Retailer 20
-
HK$9,930 HKD
ZAR 20,447 ZAR
View
B
Retailer 21
-
HK$11,847 HKD
£1,189 GBP
View
Most Expensive
NZ Jewellers
3f724734-06cf-487f-9645-3f0ba00e4b40 · Oct 30
HK$20,171 HKD
$2,571 USD
View
Price under review
21 more retailers have this diamond
Prices start from HK$4,875 HKDSave up to HK$6,972 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$4,875 HKD