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Marquise|Natural|IGI

0.51ct K VS1 Marquise Natural Diamond

VG • K/VS1 • IGI 731559808

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 731559808

Diamond specifications and retailer prices

From £181 GBP
As of November 6, 2026
Save £758 GBP (81%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £939 GBP at NZ Jewellers · As of November 5, 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 very-good cut grade and certified by IGI 731559808. Listed at 14 retailers as of November 5, 2026, with prices from £181 to £939, a £758 spread on the same certified stone. NZ Jewellers lists it at £939. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.51
Carat
K
Colour
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.7°
Pavilion angle38.8°
OriginNatural
Grading LabIGI
CertificateIGI 731559808
Dimensions8.12 × 4.34 × 2.54 mm
L/W Ratio1.87
Girdle conditionFaceted
Culet sizePointed
Top View
8.12 mm4.34 mm0.51 ctK / VS1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 731559808
Side View
Table 59.0%Crown 34.7°Girdle: MED-THKPavilion 38.8°Culet: NoneDepth 58.5%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £181 GBP|Low: £181 GBP|High: £572 GBP|Avg: £365 GBP|-0.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 1£181 GBP
Retailer 2£282 GBP
Retailer 3£324 GBP
Retailer 4£380 GBP
Retailer 5£409 GBP
Retailer 7£458 GBP
Retailer 6£566 GBP

31 data points across 7 retailers

14 retailers£181 GBP to £939 GBP

A
Cheapest Retailer
-
£181 GBP
Retailer 2
-
£224 GBP
View
Price last confirmed 95 days ago
A
Retailer 3
-
£245 GBP
View
Retailer 4
-
£264 GBP
View
Price last confirmed 8 days ago
A
Retailer 5
-
£273 GBP
View
A
Retailer 6
-
£282 GBP
View
B+
Retailer 7
-
£324 GBP
View
B+
Retailer 8
-
£330 GBP
View
B+
Retailer 9
-
£342 GBP
View
A
Retailer 10
-
£380 GBP
View
B+
Retailer 11
-
£409 GBP
View
B+
Retailer 12
-
£458 GBP
View
B+
Retailer 13
-
£566 GBP
View
Most Expensive
C
NZ Jewellers
ce013447-d670-4d1b-a8b2-5cb0defe77df · Nov 5
£939 GBP
$1,264 USD
View
13 more retailers have this diamond
Prices start from £181 GBPSave up to £758 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
£181 GBP