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Marquise|Natural|IGI

0.50ct H SI1 Marquise Natural Diamond

VG • H/SI1 • IGI 815681702

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 815681702

Diamond specifications and retailer prices

From £267 GBP
As of November 6, 2026
Save £1,098 GBP (80%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £1,364 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 815681702. Listed at 19 retailers as of November 5, 2026, with prices from £267 to £1,364, a £1,098 spread on the same certified stone. NZ Jewellers lists it at £1,364. 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
H
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.3°
Pavilion angle37°
OriginNatural
Grading LabIGI
CertificateIGI 815681702
Dimensions8.31 × 4.13 × 2.46 mm
L/W Ratio2.01
Girdle conditionFaceted
Top View
8.31 mm4.13 mm0.50 ctH / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 815681702
Side View
Table 60.0%Crown 44.3°Girdle: MED-STKPavilion 37°Culet: NoneDepth 59.6%

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: £1,364 GBP|Low: £267 GBP|High: £1,364 GBP|Avg: £482 GBP
NZ Jewellers
Retailer 2
Retailer 3
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Retailer 11
Retailer 12
Retailer 13
Retailer 14
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Retailer 16
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Retailer 18
Retailer 19
November 6, 2026
Retailer 2£267 GBP
Retailer 7£306 GBP
Retailer 9£329 GBP
Retailer 11£329 GBP
Retailer 15£356 GBP
Retailer 3£383 GBP
Retailer 4£383 GBP
Retailer 19£411 GBP
Retailer 12£434 GBP
Retailer 18£434 GBP
Retailer 5£445 GBP
Retailer 6£453 GBP
Retailer 14£453 GBP
Retailer 8£464 GBP
Retailer 13£495 GBP
Retailer 10£508 GBP
Retailer 16£551 GBP
Retailer 17£820 GBP
NZ Jewellers£1,364 GBP

19 data points across 19 retailers

19 retailers£267 GBP to £1,364 GBP

A
Cheapest Retailer
-
£267 GBP
A
Retailer 2
-
£306 GBP
View
A
Retailer 3
-
£329 GBP
View
Final sale: no returns
A
Retailer 4
-
£329 GBP
View
A
Retailer 5
-
£356 GBP
View
Retailer 6
-
£383 GBP
View
Price last confirmed 8 days ago
A
Retailer 7
-
£383 GBP
View
A
Retailer 8
-
£411 GBP
View
A
Retailer 9
-
£434 GBP
View
A
Retailer 10
-
£434 GBP
View
A
Retailer 11
-
£445 GBP
View
A
Retailer 12
-
£453 GBP
View
B+
Retailer 13
-
£453 GBP
View
B+
Retailer 14
-
£464 GBP
View
B+
Retailer 15
-
£495 GBP
View
B+
Retailer 16
-
£508 GBP
View
B+
Retailer 17
-
£551 GBP
View
B
Retailer 18
-
£820 GBP
View
Most Expensive
B
NZ Jewellers
f1394ae1-8bb3-419f-af27-14764a6559c2 · Nov 5
£1,364 GBP
$1,826 USD
View
18 more retailers have this diamond
Prices start from £267 GBPSave up to £1,098 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
£267 GBP