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Marquise|Natural|GIA

0.51ct I SI1 Marquise Natural Diamond

EX • I/SI1 • GIA 6562612974

Certificate GIA 6562612974

Diamond specifications and retailer prices

From €406 EUR
$455 USD
As of November 2, 2026
Save €1,279 EUR (76%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: €1,685 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 I 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 6562612974. Listed at 14 retailers as of November 2, 2026, with prices from €406 to €1,685, a €1,279 spread on the same certified stone. NZ Jewellers lists it at €1,685. 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
I
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6562612974
Dimensions8.00 × 4.23 × 2.67 mm
L/W Ratio1.89
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Crystal
Top View
8.00 mm4.23 mm0.51 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 6562612974
Side View
Table 57.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 63.0%

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: €1,685 EUR|Low: €406 EUR|High: €1,723 EUR|Avg: €639 EUR|+17.1%
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 11€406 EUR
Retailer 13€440 EUR
Retailer 12€455 EUR
Retailer 7€473 EUR
Retailer 6€484 EUR
Retailer 5€488 EUR
Retailer 9€507 EUR
Retailer 14€507 EUR
Retailer 3€513 EUR
Retailer 10€540 EUR
Retailer 2€550 EUR
Retailer 4€606 EUR
Retailer 8€1,016 EUR
NZ Jewellers€1,685 EUR

14 data points across 14 retailers

14 retailers€406 EUR to €1,685 EUR

A
Cheapest Retailer
-
€406 EUR
$455 USD
Final sale: no returns
A
Retailer 2
-
€440 EUR
$493 USD
View
A
Retailer 3
-
€455 EUR
$510 USD
View
A
Retailer 4
-
€473 EUR
$531 USD
View
A
Retailer 5
-
€484 EUR
$543 USD
View
A
Retailer 6
-
€488 EUR
SGD 740 SGD
View
Price last confirmed 7 days ago
A
Retailer 7
-
€507 EUR
$569 USD
View
A
Retailer 8
-
€507 EUR
$569 USD
View
A
Retailer 9
-
€513 EUR
$575 USD
View
A
Retailer 10
-
€540 EUR
£477 GBP
View
A
Retailer 11
-
€550 EUR
£485 GBP
View
B+
Retailer 12
-
€606 EUR
$680 USD
View
B
Retailer 13
-
€1,016 EUR
£897 GBP
View
Most Expensive
C
NZ Jewellers
0b52d66a-7e99-4f9c-a014-51de6eea188d · Nov 3
€1,685 EUR
$1,890 USD
View
13 more retailers have this diamond
Prices start from €406 EURSave up to €1,279 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
€406 EUR