CaratHunter
Plans
Marquise|Natural|GIA

0.51ct E SI2 Marquise Natural Diamond

EX • E/SI2 • GIA 6545321237

Certificate GIA 6545321237

Diamond specifications and retailer prices

From €656 EUR
As of November 5, 2026
Save €746 EUR (53%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: €1,402 EUR at Diamond Exchange Canada · As of November 5, 2026
View at Diamond Exchange Canada

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 SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6545321237. Listed at 11 retailers as of November 5, 2026, with prices from €656 to €1,402, a €746 spread on the same certified stone. Diamond Exchange Canada lists it at €1,402. 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
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Pavilion angle41.3°
OriginNatural
Grading LabGIA
CertificateGIA 6545321237
Dimensions8.19 × 4.21 × 2.68 mm
L/W Ratio1.95
Top View
8.19 mm4.21 mm0.51 ctE / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6545321237
Side View
Table 58.0%CrownGirdle: MED-VTKPavilion 41.3°Culet: NoneDepth 63.5%

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 5
Current: €1,402 EUR|Low: €456 EUR|High: €1,402 EUR|Avg: €899 EUR
Diamond Exchange Canada
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
November 6, 2026
Retailer 10€456 EUR
Retailer 11€656 EUR
Retailer 15€725 EUR
Retailer 8€760 EUR
Retailer 5€771 EUR
Retailer 3€779 EUR
Retailer 13€794 EUR
Retailer 18€794 EUR
Retailer 9€824 EUR
Retailer 12€893 EUR
Retailer 16€950 EUR
Retailer 4€962 EUR
Retailer 7€962 EUR
Retailer 14€973 EUR
Retailer 6€989 EUR
Retailer 2€1,117 EUR
Retailer 17€1,320 EUR
Diamond Exchange Canada€1,402 EUR

19 data points across 18 retailers

11 retailers€656 EUR to €1,402 EUR

A
Cheapest Retailer
-
€656 EUR
B+
Retailer 2
-
€725 EUR
View
B+
Retailer 3
-
€779 EUR
View
B+
Retailer 4
-
€794 EUR
View
B+
Retailer 5
-
€893 EUR
View
B
Retailer 6
-
€962 EUR
View
B
Retailer 7
-
€962 EUR
View
B
Retailer 8
-
€973 EUR
View
B+
Retailer 9
-
€989 EUR
View
B
Retailer 10
-
€1,117 EUR
View
Most Expensive
B
Diamond Exchange Canada
1982807032 · Nov 5
€1,402 EUR
CA$2,185 CAD
View
10 more retailers have this diamond
Prices start from €656 EURSave up to €746 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
€656 EUR