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Marquise|Natural|IGI

0.50ct G SI2 Marquise Natural Diamond

VG • G/SI2 • IGI 800673801

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 800673801

Diamond specifications and retailer prices

From £386 GBP
As of November 6, 2026
Save £928 GBP (71%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £1,314 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 0.5ct natural marquise diamond

This 0.5ct natural marquise sits in the half to three-quarter carat band, graded G colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by IGI 800673801. Listed at 12 retailers as of November 5, 2026, with prices from £386 to £1,314, a £928 spread on the same certified stone. NZ Jewellers lists it at £1,314. 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

0.50
Carat
G
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle32.3°
Pavilion angle39.4°
OriginNatural
Grading LabIGI
CertificateIGI 800673801
Dimensions9.01 × 3.95 × 2.52 mm
L/W Ratio2.28
Girdle conditionFaceted
Top View
9.01 mm3.95 mm0.50 ctG / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 800673801
Side View
Table 51.0%Crown 32.3°Girdle: MED-STKPavilion 39.4°Culet: NoneDepth 63.8%

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: £1,314 GBP|Low: £354 GBP|High: £1,393 GBP|Avg: £608 GBP|-5.7%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 9£386 GBP
Retailer 10£419 GBP
Retailer 8£451 GBP
Retailer 11£451 GBP
Retailer 3£483 GBP
Retailer 2£498 GBP
Retailer 4£517 GBP
Retailer 12£521 GBP
Retailer 7£524 GBP
Retailer 6£622 GBP
Retailer 5£965 GBP
NZ Jewellers£1,314 GBP

45 data points across 12 retailers

12 retailers£386 GBP to £1,314 GBP

A
Cheapest Retailer
-
£386 GBP
Final sale: no returns
A
Retailer 2
-
£419 GBP
View
A
Retailer 3
-
£451 GBP
View
Retailer 4
-
£451 GBP
View
Price last confirmed 8 days ago
A
Retailer 5
-
£483 GBP
View
A
Retailer 6
-
£498 GBP
View
B+
Retailer 7
-
£517 GBP
View
B+
Retailer 8
-
£521 GBP
View
B+
Retailer 9
-
£524 GBP
View
B+
Retailer 10
-
£622 GBP
View
B
Retailer 11
-
£965 GBP
View
Most Expensive
B
NZ Jewellers
7363867a-f6cf-4c08-82b2-f9a2b242e147 · Nov 5
£1,314 GBP
$1,759 USD
View
11 more retailers have this diamond
Prices start from £386 GBPSave up to £928 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
0.50ct Marquise
£386 GBP