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Marquise|Natural|IGI

1.50ct G SI1 Marquise Natural Diamond

VG • G/SI1 • IGI 814628506

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 814628506

Diamond specifications and retailer prices

From £4,038 GBP
₹516,043 INR
As of November 2, 2026
Save £3,406 GBP (46%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £8,933 GBP at NZ Jewellers · As of September 20, 2026
View at NZ Jewellers

About this 1.5ct natural marquise diamond

This 1.5ct natural marquise sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 814628506. Listed at 16 retailers as of November 2, 2026, with a 84% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.50
Carat
G
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.9°
Pavilion angle34.6°
OriginNatural
Grading LabIGI
CertificateIGI 814628506
Dimensions11.43 × 6.18 × 3.44 mm
L/W Ratio1.85
Girdle conditionFaceted
Top View
11.43 mm6.18 mm1.50 ctG / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 814628506
Side View
Table 61.0%Crown 34.9°Girdle: MED-VTKPavilion 34.6°Culet: NoneDepth 55.7%

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 2
Current: £5,423 GBP|Low: £4,030 GBP|High: £7,483 GBP|Avg: £5,323 GBP
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 2, 2026
Retailer 6£4,038 GBP
Retailer 3£4,658 GBP
Retailer 13£4,780 GBP
Retailer 2£4,941 GBP
Retailer 7£5,032 GBP
Retailer 9£5,181 GBP
Retailer 4£5,310 GBP
Retailer 12£5,388 GBP
Retailer 1£5,423 GBP
Retailer 5£5,461 GBP
Retailer 8£5,512 GBP
Retailer 11£6,562 GBP
Retailer 10£7,443 GBP

21 data points across 13 retailers

16 retailers£4,038 GBP to £7,443 GBP

A
Cheapest Retailer
-
£4,038 GBP
₹516,043 INR
A
Retailer 2
-
£4,658 GBP
$6,251 USD
View
A
Retailer 3
-
£4,780 GBP
$6,415 USD
View
B+
Retailer 4
-
£4,941 GBP
$6,630 USD
View
A
Retailer 5
-
£5,032 GBP
View
A
Retailer 6
-
£5,181 GBP
View
B+
Retailer 7
-
£5,310 GBP
$7,126 USD
View
Retailer 8
-
£5,341 GBP
$7,167 USD
View
Price last confirmed 40 days ago
B+
Retailer 9
-
£5,388 GBP
$7,230 USD
View
A
Retailer 10
-
£5,423 GBP
$7,277 USD
View
B+
Retailer 11
-
£5,461 GBP
$7,329 USD
View
A
Retailer 12
-
£5,512 GBP
€7,045 EUR
View
Retailer 13
-
£6,163 GBP
$8,270 USD
View
Price last confirmed 41 days ago
B+
Retailer 14
-
£6,562 GBP
ZAR 142,262 ZAR
View
B
Retailer 15
-
£7,443 GBP
View
Most Expensive
NZ Jewellers
88e37217-5790-4b88-998b-c1105d12e8cf · Sep 20
£8,933 GBP
$11,987 USD
View
Price last confirmed 43 days ago
15 more retailers have this diamond
Prices start from £4,038 GBPSave up to £3,406 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
1.50ct Marquise
£4,038 GBP