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Marquise|Natural|GIA

0.51ct J SI2 Marquise Natural Diamond

EX • J/SI2 • GIA 1563008847

Certificate GIA 1563008847

Diamond specifications and retailer prices

From £364 GBP
As of November 4, 2026
Save £875 GBP (71%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £1,239 GBP at NZ Jewellers · As of November 3, 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 J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1563008847. Listed at 12 retailers as of November 3, 2026, with prices from £364 to £1,239, a £875 spread on the same certified stone. NZ Jewellers lists it at £1,239. 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
J
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1563008847
Dimensions8.82 × 4.16 × 2.43 mm
L/W Ratio2.12
Girdle conditionFaceted
Culet sizeNone
Top View
8.82 mm4.16 mm0.51 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1563008847
Side View
Table 62.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 58.4%

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 4
Current: £490 GBP|Low: £334 GBP|High: £923 GBP|Avg: £523 GBP|+4.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 5, 2026
Retailer 4£364 GBP
Retailer 6£425 GBP
Retailer 8£456 GBP
Retailer 5£477 GBP
Retailer 1£490 GBP
Retailer 7£493 GBP
Retailer 3£589 GBP
Retailer 2£911 GBP

44 data points across 8 retailers

12 retailers£364 GBP to £1,239 GBP

A
Cheapest Retailer
-
£364 GBP
Final sale: no returns
A
Retailer 2
-
£395 GBP
View
Retailer 3
-
£425 GBP
View
Price last confirmed 8 days ago
B+
Retailer 4
-
£425 GBP
View
B+
Retailer 5
-
£456 GBP
View
Retailer 6
-
£456 GBP
View
Price last confirmed 61 days ago
B+
Retailer 7
-
£456 GBP
View
B+
Retailer 8
-
£490 GBP
View
B+
Retailer 9
-
£493 GBP
View
B
Retailer 10
-
£589 GBP
View
B
Retailer 11
-
£911 GBP
View
Most Expensive
C
NZ Jewellers
6bb20c1b-f3cc-4e77-b777-68db4d99320e · Nov 3
£1,239 GBP
$1,658 USD
View
11 more retailers have this diamond
Prices start from £364 GBPSave up to £875 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
£364 GBP