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Marquise|Natural|IGI

0.51ct K VS1 Marquise Natural Diamond

VG • K/VS1 • IGI 649447414

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 649447414

Diamond specifications and retailer prices

From £310 GBP
As of November 5, 2026
Save £878 GBP (74%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £1,188 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 649447414. Listed at 14 retailers as of November 5, 2026, with prices from £310 to £1,188, a £878 spread on the same certified stone. NZ Jewellers lists it at £1,188. 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 angle34.2°
Pavilion angle40.1°
OriginNatural
Grading LabIGI
CertificateIGI 649447414
Dimensions8.20 × 4.19 × 2.63 mm
L/W Ratio1.96
Girdle conditionFaceted
Culet sizePointed
Top View
8.20 mm4.19 mm0.51 ctK / VS1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 649447414
Side View
Table 60.0%Crown 34.2°Girdle: MED-THKPavilion 40.1°Culet: NoneDepth 62.8%

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 5
Current: £1,188 GBP|Low: £310 GBP|High: £1,252 GBP|Avg: £466 GBP|-5.1%
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 4£310 GBP
Retailer 10£323 GBP
Retailer 3£334 GBP
Retailer 14£334 GBP
Retailer 5£357 GBP
Retailer 2£357 GBP
Retailer 11£357 GBP
Retailer 7£395 GBP
Retailer 6£407 GBP
Retailer 12£424 GBP
Retailer 13£427 GBP
Retailer 8£481 GBP
Retailer 9£715 GBP
NZ Jewellers£1,188 GBP

24 data points across 14 retailers

14 retailers£310 GBP to £1,188 GBP

A
Cheapest Retailer
-
£310 GBP
A
Retailer 2
-
£323 GBP
View
A
Retailer 3
-
£334 GBP
View
Retailer 4
-
£334 GBP
View
Price last confirmed 8 days ago
A
Retailer 5
-
£357 GBP
View
A
Retailer 6
-
£357 GBP
View
A
Retailer 7
-
£357 GBP
View
A
Retailer 8
-
£395 GBP
View
A
Retailer 9
-
£407 GBP
View
A
Retailer 10
-
£424 GBP
View
A
Retailer 11
-
£427 GBP
View
B+
Retailer 12
-
£481 GBP
View
B
Retailer 13
-
£715 GBP
View
Most Expensive
C
NZ Jewellers
b01a21ba-8977-44ee-a951-18bac62945f9 · Nov 5
£1,188 GBP
$1,599 USD
View
13 more retailers have this diamond
Prices start from £310 GBPSave up to £878 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
£310 GBP