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Marquise|Natural|GIA

0.51ct K VS1 Marquise Natural Diamond

EX • K/VS1 • GIA 7538312003

Certificate GIA 7538312003

Diamond specifications and retailer prices

From £326 GBP
As of November 6, 2026
Save £1,072 GBP (77%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £1,398 GBP at NZ Jewellers · As of October 17, 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 K colour (faint-tinted) and VS1 clarity (very-slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 7538312003. Listed at 19 retailers as of November 5, 2026, with a 329% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

0.51
Carat
K
Colour
VS1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7538312003
Dimensions8.76 × 4.15 × 2.55 mm
L/W Ratio2.11
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Twinning Wisp, Needle
Top View
8.76 mm4.15 mm0.51 ctK / VS1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 7538312003
Side View
Table 59.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 61.5%

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: £326 GBP|Low: £326 GBP|High: £1,042 GBP|Avg: £627 GBP|-2.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 1£326 GBP
Retailer 6£480 GBP
Retailer 2£542 GBP
Retailer 7£587 GBP
Retailer 5£656 GBP
Retailer 3£688 GBP
Retailer 4£1,028 GBP

42 data points across 7 retailers

19 retailers£326 GBP to £1,398 GBP

A
Cheapest Retailer
-
£326 GBP
Retailer 2
-
£446 GBP
View
Price last confirmed 39 days ago
Retailer 3
-
£446 GBP
View
Price last confirmed 19 days ago
Retailer 4
-
£446 GBP
View
Price last confirmed 8 days ago
Retailer 5
-
£480 GBP
View
Price last confirmed 8 days ago
Retailer 6
-
£480 GBP
View
Price last confirmed 21 days ago
Retailer 7
-
£480 GBP
View
Price last confirmed 20 days ago
Retailer 8
-
£515 GBP
View
Price last confirmed 38 days ago
B+
Retailer 9
-
£515 GBP
View
Retailer 10
-
£515 GBP
View
Price last confirmed 28 days ago
B+
Retailer 11
-
£542 GBP
View
B+
Retailer 12
-
£544 GBP
View
B
Retailer 13
-
£587 GBP
View
B+
Retailer 14
-
£656 GBP
View
B+
Retailer 15
-
£688 GBP
View
B
Retailer 16
-
£1,028 GBP
View
Retailer 17
-
£1,398 GBP
View
Price last confirmed 39 days ago
B
Retailer 18
-
£1,398 GBP
View
Most Expensive
NZ Jewellers
be489c8b-2e27-4481-9775-1d9f1c7d2a7d · Oct 17
£1,398 GBP
$1,882 USD
View
Price last confirmed 19 days ago
18 more retailers have this diamond
Prices start from £326 GBPSave up to £1,072 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
£326 GBP