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Marquise|Natural|GIA

0.51ct F SI2 Marquise Natural Diamond

EX • F/SI2 • GIA 7558566290

Certificate GIA 7558566290

Diamond specifications and retailer prices

From £443 GBP
$595 USD
As of November 2, 2026
Save £1,066 GBP (71%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £1,509 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 7558566290. Listed at 6 retailers as of October 30, 2026, with prices from £443 to £1,509, a £1,066 spread on the same certified stone. NZ Jewellers lists it at £1,509. 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
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
OriginNatural
Grading LabGIA
CertificateGIA 7558566290
Dimensions8.17 × 4.20 × 2.60 mm
L/W Ratio1.95
Culet sizeNone
Key to symbols
Feather
Top View
8.17 mm4.20 mm0.51 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7558566290
Side View
Table 58.0%Crown 34°Girdle: STK-VTKPavilionCulet: NoneDepth 61.9%

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: £1,509 GBP|Low: £423 GBP|High: £1,566 GBP|Avg: £756 GBP|-3.7%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 2, 2026
Retailer 6£443 GBP
Retailer 5£465 GBP
Retailer 3£588 GBP
Retailer 4£603 GBP
Retailer 2£646 GBP
NZ Jewellers£1,509 GBP

43 data points across 6 retailers

6 retailers£443 GBP to £1,509 GBP

A
Cheapest Retailer
-
£443 GBP
$595 USD
Final sale: no returns
A
Retailer 2
-
£465 GBP
SGD 844 SGD
View
B+
Retailer 3
-
£588 GBP
View
B+
Retailer 4
-
£603 GBP
View
B+
Retailer 5
-
£646 GBP
€825 EUR
View
Most Expensive
B
NZ Jewellers
00d38d6e-a376-4577-80d4-d40c8aeb1dae · Oct 30
£1,509 GBP
$2,025 USD
View
5 more retailers have this diamond
Prices start from £443 GBPSave up to £1,066 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
£443 GBP