CaratHunter
Plans
Marquise|Natural|GIA

0.51ct E SI1 Marquise Natural Diamond

EX • E/SI1 • GIA 2547244543

Certificate GIA 2547244543

Diamond specifications and retailer prices

From HK$5,319 HKD
$678 USD
As of October 31, 2026
Save HK$11,921 HKD (69%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: HK$18,006 HKD at NZ Jewellers · As of September 25, 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 2547244543. Listed at 16 retailers as of October 30, 2026, with a 224% 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
SymmetryExcellent
FluorescenceNone
Pavilion angle39.4°
OriginNatural
Grading LabGIA
CertificateGIA 2547244543
Dimensions8.64 × 4.22 × 2.45 mm
L/W Ratio2.05
Top View
8.64 mm4.22 mm0.51 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2547244543
Side View
Table 61.0%CrownGirdle: MED-THKPavilion 39.4°Culet: NoneDepth 58.1%

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$7,116 HKD|Low: HK$3,844 HKD|High: HK$17,240 HKD|Avg: HK$7,247 HKD|+8.3%
Retailer 1
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
November 1, 2026
Retailer 3HK$4,778 HKD
Retailer 10HK$4,820 HKD
Retailer 16HK$5,319 HKD
Retailer 5HK$5,335 HKD
Retailer 2HK$5,687 HKD
Retailer 11HK$5,853 HKD
Retailer 7HK$5,916 HKD
Retailer 17HK$6,653 HKD
Retailer 18HK$6,826 HKD
Retailer 19HK$6,826 HKD
Retailer 4HK$7,061 HKD
Retailer 20HK$7,061 HKD
Retailer 1HK$7,116 HKD
Retailer 8HK$7,418 HKD
Retailer 12HK$8,395 HKD
Retailer 9HK$8,502 HKD
Retailer 13HK$8,572 HKD
Retailer 6HK$8,744 HKD
Retailer 14HK$10,901 HKD
Retailer 15HK$17,240 HKD

33 data points across 20 retailers

16 retailersHK$5,319 HKD to HK$17,240 HKD

Retailer 1
-
HK$4,820 HKD
Price last confirmed 27 days ago
A
Retailer 2
-
HK$5,319 HKD
$678 USD
View
Retailer 3
-
HK$5,687 HKD
€690 EUR
View
Price last confirmed 26 days ago
Retailer 4
-
HK$5,853 HKD
$746 USD
View
Price last confirmed 31 days ago
Retailer 5
-
HK$5,916 HKD
SGD 1,019 SGD
View
Price last confirmed 26 days ago
B+
Retailer 6
-
HK$6,653 HKD
$848 USD
View
B+
Retailer 7
-
HK$6,826 HKD
$870 USD
View
B+
Retailer 8
-
HK$6,826 HKD
$870 USD
View
B+
Retailer 9
-
HK$7,061 HKD
$900 USD
View
B+
Retailer 10
-
HK$7,116 HKD
£714 GBP
View
B
Retailer 11
-
HK$8,395 HKD
€1,019 EUR
View
Retailer 12
-
HK$8,502 HKD
A$1,667 AUD
View
Price last confirmed 28 days ago
Retailer 13
-
HK$8,744 HKD
ZAR 18,005 ZAR
View
Price last confirmed 28 days ago
B
Retailer 14
-
HK$10,901 HKD
£1,094 GBP
View
B
Retailer 15
-
HK$17,240 HKD
CA$3,052 CAD
View
Most Expensive
NZ Jewellers
8d672b14-9f32-4c3d-a605-a25855dcacd1 · Sep 25
HK$18,006 HKD
$2,295 USD
View
Price last confirmed 37 days ago
15 more retailers have this diamond
Prices start from HK$5,319 HKDSave up to HK$11,921 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$5,319 HKD