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Marquise|Natural|IGI

1.50ct K SI2 Marquise Natural Diamond

VG • K/SI2 • IGI 790690779

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 790690779

Diamond specifications and retailer prices

From £2,094 GBP
As of November 6, 2026
Save £2,122 GBP (50%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £4,405 GBP at NZ Jewellers · As of October 24, 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 K colour (faint-tinted) and SI2 clarity (slightly-included), with a very-good cut grade and certified by IGI 790690779. Listed at 11 retailers as of November 4, 2026, with a 101% 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
K
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.5°
Pavilion angle40.4°
OriginNatural
Grading LabIGI
CertificateIGI 790690779
Dimensions11.44 × 5.91 × 3.76 mm
L/W Ratio1.94
Girdle conditionFaceted
Culet sizePointed
Top View
11.44 mm5.91 mm1.50 ctK / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 790690779
Side View
Table 64.0%Crown 39.5°Girdle: STK-THKPavilion 40.4°Culet: NoneDepth 63.6%

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: £4,405 GBP|Low: £2,094 GBP|High: £4,405 GBP|Avg: £2,953 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 2£2,094 GBP
Retailer 10£2,244 GBP
Retailer 3£2,519 GBP
Retailer 6£2,528 GBP
Retailer 7£2,528 GBP
Retailer 8£2,625 GBP
Retailer 9£2,917 GBP
Retailer 4£2,943 GBP
Retailer 5£4,216 GBP
NZ Jewellers£4,405 GBP

42 data points across 10 retailers

11 retailers£2,094 GBP to £4,216 GBP

A
Cheapest Retailer
-
£2,094 GBP
B+
Retailer 2
-
£2,244 GBP
View
B+
Retailer 3
-
£2,519 GBP
View
Retailer 4
-
£2,528 GBP
View
Price last confirmed 16 days ago
Retailer 5
-
£2,528 GBP
View
Price last confirmed 14 days ago
Retailer 6
-
£2,625 GBP
View
Price last confirmed 16 days ago
B+
Retailer 7
-
£2,636 GBP
View
Retailer 8
-
£2,917 GBP
View
Price last confirmed 15 days ago
B+
Retailer 9
-
£2,943 GBP
View
B+
Retailer 10
-
£4,216 GBP
View
Most Expensive
NZ Jewellers
affd979a-7dfe-4041-8de9-7174df3b9d9d · Oct 24
£4,405 GBP
$5,896 USD
View
Price last confirmed 14 days ago
10 more retailers have this diamond
Prices start from £2,094 GBPSave up to £2,122 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
£2,094 GBP