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Marquise|Natural|GIA

0.51ct E SI2 Marquise Natural Diamond

EX • E/SI2 • GIA 6542475233

Certificate GIA 6542475233

Diamond specifications and retailer prices

From £676 GBP
As of November 5, 2026
Save £379 GBP (36%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £1,055 GBP 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 6542475233. Listed at 9 retailers as of November 5, 2026, with prices from £676 to £1,055, a £379 spread on the same certified stone. Diamond Exchange Canada lists it at £1,055. 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
FluorescenceNone
Crown angle33.36°
OriginNatural
Grading LabGIA
CertificateGIA 6542475233
Dimensions8.28 × 4.34 × 2.52 mm
L/W Ratio1.91
Top View
8.28 mm4.34 mm0.51 ctE / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6542475233
Side View
Table 63.0%Crown 33.36°Girdle: Sli. ThickPavilionCulet: NoneDepth 58.0%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: £1,055 GBP|Low: £598 GBP|High: £1,055 GBP|Avg: £751 GBP
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
November 6, 2026
Retailer 4£598 GBP
Retailer 13£609 GBP
Retailer 3£612 GBP
Retailer 5£657 GBP
Retailer 7£676 GBP
Retailer 9£728 GBP
Retailer 10£728 GBP
Retailer 12£733 GBP
Retailer 8£750 GBP
Retailer 2£845 GBP
Retailer 6£860 GBP
Retailer 11£921 GBP
Diamond Exchange Canada£1,055 GBP

43 data points across 13 retailers

9 retailers£676 GBP to £1,055 GBP

B+
Cheapest Retailer
-
£676 GBP
B+
Retailer 2
-
£728 GBP
View
B+
Retailer 3
-
£728 GBP
View
B+
Retailer 4
-
£733 GBP
View
B+
Retailer 5
-
£750 GBP
View
B+
Retailer 6
-
£845 GBP
View
B+
Retailer 7
-
£860 GBP
View
B
Retailer 8
-
£921 GBP
View
Most Expensive
B
Diamond Exchange Canada
1984739230 · Nov 5
£1,055 GBP
CA$1,973 CAD
View
8 more retailers have this diamond
Prices start from £676 GBPSave up to £379 GBP

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.

B+
0.51ct Marquise
£676 GBP