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Marquise|Natural|IGI

0.51ct H VS1 Marquise Natural Diamond

VG • H/VS1 • IGI 815656065

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 815656065

Diamond specifications and retailer prices

From £409 GBP
As of November 5, 2026
Save £1,115 GBP (73%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £1,524 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 H colour (near-colourless) and VS1 clarity (very-slightly-included), with a very-good cut grade and certified by IGI 815656065. Listed at 14 retailers as of November 3, 2026, with prices from £409 to £1,524, a £1,115 spread on the same certified stone. NZ Jewellers lists it at £1,524. 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
H
Colour
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceStrong
Crown angle30.8°
Pavilion angle38.4°
OriginNatural
Grading LabIGI
CertificateIGI 815656065
Dimensions8.80 × 4.13 × 2.45 mm
L/W Ratio2.13
Girdle conditionFaceted
Top View
8.80 mm4.13 mm0.51 ctH / VS1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateIGI 815656065
Side View
Table 57.0%Crown 30.8°Girdle: MED-STKPavilion 38.4°Culet: NoneDepth 59.3%

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 5
Current: £1,524 GBP|Low: £409 GBP|High: £1,551 GBP|Avg: £686 GBP|-1.7%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
November 6, 2026
Retailer 11£409 GBP
Retailer 5£448 GBP
Retailer 3£486 GBP
Retailer 6£489 GBP
Retailer 4£506 GBP
Retailer 10£548 GBP
Retailer 7£556 GBP
Retailer 9£606 GBP
Retailer 14£624 GBP
Retailer 8£643 GBP
Retailer 2£724 GBP
Retailer 12£748 GBP
Retailer 13£1,120 GBP
NZ Jewellers£1,524 GBP

21 data points across 14 retailers

14 retailers£409 GBP to £1,524 GBP

A
Cheapest Retailer
-
£409 GBP
A
Retailer 2
-
£448 GBP
View
A
Retailer 3
-
£486 GBP
View
Retailer 4
-
£489 GBP
View
Price last confirmed 8 days ago
A
Retailer 5
-
£506 GBP
View
A
Retailer 6
-
£548 GBP
View
A
Retailer 7
-
£556 GBP
View
B+
Retailer 8
-
£606 GBP
View
B+
Retailer 9
-
£624 GBP
View
B+
Retailer 10
-
£643 GBP
View
B+
Retailer 11
-
£724 GBP
View
B+
Retailer 12
-
£748 GBP
View
B
Retailer 13
-
£1,120 GBP
View
Most Expensive
B
NZ Jewellers
2af8094a-74d6-4ef5-87f1-7c20b67b34ed · Nov 3
£1,524 GBP
$2,040 USD
View
13 more retailers have this diamond
Prices start from £409 GBPSave up to £1,115 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
£409 GBP