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Marquise|Natural|GIA

0.51ct F SI2 Marquise Natural Diamond

EX • F/SI2 • GIA 1567415074

Certificate GIA 1567415074

Diamond specifications and retailer prices

From £402 GBP
$539 USD
As of November 2, 2026
Save £639 GBP (61%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £1,782 GBP at NZ Jewellers · As of October 30, 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 1567415074. Listed at 11 retailers as of November 2, 2026, with a 159% 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
F
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1567415074
Dimensions8.13 × 4.25 × 2.61 mm
L/W Ratio1.91
Girdle conditionVery Thick
Top View
8.13 mm4.25 mm0.51 ctF / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1567415074
Side View
Table 57.0%CrownGirdle: Slightly ThickPavilionCulet: NoneDepth 61.4%

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: £1,782 GBP|Low: £402 GBP|High: £1,782 GBP|Avg: £758 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 10£402 GBP
Retailer 3£426 GBP
Retailer 8£522 GBP
Retailer 7£577 GBP
Retailer 9£667 GBP
Retailer 5£677 GBP
Retailer 4£679 GBP
Retailer 6£805 GBP
Retailer 2£1,041 GBP
NZ Jewellers£1,782 GBP

29 data points across 10 retailers

11 retailers£402 GBP to £1,041 GBP

A
Cheapest Retailer
-
£402 GBP
$539 USD
Final sale: no returns
A
Retailer 2
-
£426 GBP
₹54,491 INR
View
Retailer 3
-
£522 GBP
$700 USD
View
Price last confirmed 14 days ago
B+
Retailer 4
-
£577 GBP
$774 USD
View
B+
Retailer 5
-
£649 GBP
$871 USD
View
B+
Retailer 6
-
£667 GBP
$895 USD
View
B+
Retailer 7
-
£677 GBP
View
B+
Retailer 8
-
£679 GBP
View
B+
Retailer 9
-
£805 GBP
€1,029 EUR
View
B
Retailer 10
-
£1,041 GBP
View
Most Expensive
NZ Jewellers
f9b0e7a9-88f2-4fac-abcd-6248f25589b8 · Oct 30
£1,782 GBP
$2,392 USD
View
Price under review
10 more retailers have this diamond
Prices start from £402 GBPSave up to £639 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
£402 GBP