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Marquise|Natural|IGI

1.50ct L SI1 Marquise Natural Diamond

VG • L/SI1 • IGI 783612437

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 783612437

Diamond specifications and retailer prices

From £2,121 GBP
As of November 7, 2026
Save £1,291 GBP (38%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £4,538 GBP at NZ Jewellers · As of September 25, 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 L colour (faint-tinted) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 783612437. Listed at 9 retailers as of November 6, 2026, with a 61% 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
L
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.7°
Pavilion angle37.9°
OriginNatural
Grading LabIGI
CertificateIGI 783612437
Dimensions11.29 × 5.79 × 3.71 mm
L/W Ratio1.95
Girdle conditionFaceted
Culet sizePointed
Top View
11.29 mm5.79 mm1.50 ctL / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 783612437
Side View
Table 53.0%Crown 38.7°Girdle: THN-STKPavilion 37.9°Culet: NoneDepth 64.1%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 7
Current: £4,538 GBP|Low: £1,824 GBP|High: £4,538 GBP|Avg: £2,563 GBP
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 7, 2026
Retailer 12£1,824 GBP
Retailer 4£1,839 GBP
Retailer 10£2,121 GBP
Retailer 8£2,155 GBP
Retailer 2£2,194 GBP
Retailer 11£2,248 GBP
Retailer 9£2,267 GBP
Retailer 3£2,303 GBP
Retailer 5£2,590 GBP
Retailer 6£2,849 GBP
Retailer 7£3,412 GBP
NZ Jewellers£4,538 GBP

23 data points across 12 retailers

9 retailers£2,121 GBP to £3,412 GBP

B+
Cheapest Retailer
-
£2,121 GBP
B+
Retailer 2
-
£2,155 GBP
View
Final sale: no returns
B+
Retailer 3
-
£2,194 GBP
View
B+
Retailer 4
-
£2,248 GBP
View
B+
Retailer 5
-
£2,267 GBP
View
B+
Retailer 6
-
£2,590 GBP
View
B
Retailer 7
-
£2,849 GBP
View
B
Retailer 8
-
£3,412 GBP
View
Most Expensive
NZ Jewellers
c60c4ed0-f5ea-4cfd-8473-4325fcca9ee7 · Sep 25
£4,538 GBP
$6,074 USD
View
Price last confirmed 43 days ago
8 more retailers have this diamond
Prices start from £2,121 GBPSave up to £1,291 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.

B+
1.50ct Marquise
£2,121 GBP