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Marquise|Natural|GIA

0.51ct F SI2 Marquise Natural Diamond

EX • F/SI2 • GIA 1553998645

Certificate GIA 1553998645

Diamond specifications and retailer prices

From €434 EUR
HK$3,800 HKD
As of November 1, 2026
Save €1,200 EUR (73%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: €1,633 EUR at NZ Jewellers · As of November 3, 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 F 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 1553998645. Listed at 15 retailers as of November 1, 2026, with prices from €434 to €1,633, a €1,200 spread on the same certified stone. NZ Jewellers lists it at €1,633. 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
F
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceVery Strong
OriginNatural
Grading LabGIA
CertificateGIA 1553998645
Dimensions8.26 × 4.07 × 2.63 mm
L/W Ratio2.03
Key to symbols
Feather, Crystal
Top View
8.26 mm4.07 mm0.51 ctF / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceVery Strong
CertificateGIA 1553998645
Side View
Table 56.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 64.6%

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 1
Current: €1,633 EUR|Low: €422 EUR|High: €1,702 EUR|Avg: €720 EUR|+4.4%
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
November 3, 2026
Retailer 3€434 EUR
Retailer 4€481 EUR
Retailer 12€521 EUR
Retailer 6€542 EUR
Retailer 13€561 EUR
Retailer 14€561 EUR
Retailer 11€601 EUR
Retailer 7€622 EUR
Retailer 2€639 EUR
Retailer 5€639 EUR
Retailer 10€653 EUR
Retailer 9€770 EUR
Retailer 8€1,203 EUR
NZ Jewellers€1,633 EUR

28 data points across 14 retailers

15 retailers€434 EUR to €1,633 EUR

A
Cheapest Retailer
-
€434 EUR
HK$3,800 HKD
B+
Retailer 2
-
€481 EUR
$539 USD
View
Final sale: no returns
A
Retailer 3
-
€521 EUR
$584 USD
View
Retailer 4
-
€542 EUR
SGD 822 SGD
View
Price last confirmed 7 days ago
Retailer 5
-
€557 EUR
$625 USD
View
Price last confirmed 26 days ago
A
Retailer 6
-
€561 EUR
$629 USD
View
A
Retailer 7
-
€561 EUR
$629 USD
View
A
Retailer 8
-
€601 EUR
$674 USD
View
A
Retailer 9
-
€622 EUR
£549 GBP
View
B+
Retailer 10
-
€639 EUR
£564 GBP
View
A
Retailer 11
-
€639 EUR
$717 USD
View
B+
Retailer 12
-
€653 EUR
£576 GBP
View
B+
Retailer 13
-
€770 EUR
View
B
Retailer 14
-
€1,203 EUR
£1,062 GBP
View
Most Expensive
B
NZ Jewellers
cd7321ad-4ad1-46ac-9f13-61380a8cffbd · Nov 3
€1,633 EUR
$1,832 USD
View
14 more retailers have this diamond
Prices start from €434 EURSave up to €1,200 EUR

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
€434 EUR