CaratHunter
Plans
Marquise|Natural|GIA

0.51ct J SI1 Marquise Natural Diamond

EX • J/SI1 • GIA 7566067098

Certificate GIA 7566067098

Diamond specifications and retailer prices

From £312 GBP
As of November 6, 2026
Save £316 GBP (50%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £628 GBP at Yorxs · As of November 6, 2026
View at Yorxs

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 SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 7566067098. Listed at 9 retailers as of November 6, 2026, with prices from £312 to £628, a £316 spread on the same certified stone. Yorxs lists it at £628. 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
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 7566067098
Dimensions8.20 × 4.12 × 2.50 mm
L/W Ratio1.99
Top View
8.20 mm4.12 mm0.51 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 7566067098
Side View
Table 57.0%CrownGirdle: VTK-XTKPavilionCulet: NoneDepth 60.7%

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 6
Current: £393 GBP|Low: £295 GBP|High: £630 GBP|Avg: £443 GBP|+33.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Yorxs
November 6, 2026
Retailer 2£312 GBP
Retailer 1£393 GBP
Retailer 7£403 GBP
Retailer 6£492 GBP
Retailer 5£514 GBP
Retailer 8£519 GBP
Retailer 3£520 GBP
Retailer 4£592 GBP
Yorxs£628 GBP

32 data points across 9 retailers

9 retailers£312 GBP to £628 GBP

A
Cheapest Retailer
-
£312 GBP
A
Retailer 2
-
£393 GBP
View
Final sale: no returns
A
Retailer 3
-
£403 GBP
View
B+
Retailer 4
-
£492 GBP
View
B+
Retailer 5
-
£514 GBP
View
B+
Retailer 6
-
£519 GBP
View
B+
Retailer 7
-
£520 GBP
View
B
Retailer 8
-
£592 GBP
View
Most Expensive
B
Yorxs
071638769 · Nov 6
£628 GBP
€801 EUR
View
8 more retailers have this diamond
Prices start from £312 GBPSave up to £316 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
£312 GBP