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Marquise|Natural|GIA

0.51ct E SI2 Marquise Natural Diamond

EX • E/SI2 • GIA 7502337009

Certificate GIA 7502337009

Diamond specifications and retailer prices

From £507 GBP
As of November 4, 2026
Save £661 GBP (57%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £2,052 GBP at NZ Jewellers · As of November 5, 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 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 7502337009. Listed at 11 retailers as of November 4, 2026, with a 130% 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
E
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7502337009
Dimensions8.55 × 4.16 × 2.37 mm
L/W Ratio2.06
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather
Top View
8.55 mm4.16 mm0.51 ctE / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 7502337009
Side View
Table 59.0%CrownGirdle: ThickPavilionCulet: NoneDepth 57.0%

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 4
Current: £2,052 GBP|Low: £461 GBP|High: £2,052 GBP|Avg: £876 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 6£507 GBP
Retailer 8£655 GBP
Retailer 9£655 GBP
Retailer 7£680 GBP
Retailer 2£710 GBP
Retailer 11£753 GBP
Retailer 10£755 GBP
Retailer 3£768 GBP
Retailer 5£923 GBP
Retailer 4£1,169 GBP
NZ Jewellers£2,052 GBP

42 data points across 11 retailers

11 retailers£507 GBP to £1,169 GBP

A
Cheapest Retailer
-
£507 GBP
Final sale: no returns
B+
Retailer 2
-
£655 GBP
View
Retailer 3
-
£655 GBP
View
Price last confirmed 8 days ago
B+
Retailer 4
-
£668 GBP
View
B+
Retailer 5
-
£680 GBP
View
B+
Retailer 6
-
£710 GBP
View
B+
Retailer 7
-
£753 GBP
View
B+
Retailer 8
-
£755 GBP
View
B
Retailer 9
-
£923 GBP
View
B
Retailer 10
-
£1,169 GBP
View
Most Expensive
NZ Jewellers
b4297967-478c-45f5-aba3-157b3546cbb6 · Nov 5
£2,052 GBP
$2,762 USD
View
Price under review
10 more retailers have this diamond
Prices start from £507 GBPSave up to £661 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.

A
0.51ct Marquise
£507 GBP