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Marquise|Natural|GIA

0.51ct J SI1 Marquise Natural Diamond

EX • J/SI1 • GIA 2546516427

Certificate GIA 2546516427

Diamond specifications and retailer prices

From HK$2,754 HKD
$351 USD
As of November 2, 2026
Save HK$6,403 HKD (70%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: HK$13,903 HKD at NZ Jewellers · As of October 6, 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 J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2546516427. Listed at 10 retailers as of November 2, 2026, with a 233% 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
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2546516427
Dimensions8.36 × 4.17 × 2.48 mm
L/W Ratio2.00
Top View
8.36 mm4.17 mm0.51 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2546516427
Side View
Table 61.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 59.4%

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 2
Current: HK$6,494 HKD|Low: HK$2,550 HKD|High: HK$9,626 HKD|Avg: HK$4,836 HKD|+0.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 3, 2026
Retailer 5HK$2,754 HKD
Retailer 3HK$2,948 HKD
Retailer 6HK$3,415 HKD
Retailer 4HK$4,213 HKD
Retailer 7HK$4,262 HKD
Retailer 1HK$6,494 HKD
Retailer 2HK$9,157 HKD

46 data points across 7 retailers

10 retailersHK$2,754 HKD to HK$9,157 HKD

A
Cheapest Retailer
-
HK$2,754 HKD
$351 USD
Final sale: no returns
A
Retailer 2
-
HK$2,948 HKD
₹35,789 INR
View
A
Retailer 3
-
HK$3,415 HKD
View
A
Retailer 4
-
HK$4,213 HKD
$537 USD
View
A
Retailer 5
-
HK$4,262 HKD
SGD 734 SGD
View
Retailer 6
-
HK$4,355 HKD
$555 USD
View
Price last confirmed 32 days ago
Retailer 7
-
HK$4,433 HKD
$565 USD
View
Price last confirmed 26 days ago
B+
Retailer 8
-
HK$6,494 HKD
£652 GBP
View
B
Retailer 9
-
HK$9,157 HKD
£919 GBP
View
Most Expensive
NZ Jewellers
6f3d0445-3b4e-4c59-925d-d0fd6e3d2d92 · Oct 6
HK$13,903 HKD
$1,772 USD
View
Price last confirmed 27 days ago
9 more retailers have this diamond
Prices start from HK$2,754 HKDSave up to HK$6,403 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$2,754 HKD