CaratHunter
Plans
Marquise|Natural|IGI

1.50ct I SI1 Marquise Natural Diamond

VG • I/SI1 • IGI 843696740

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 843696740

Diamond specifications and retailer prices

From £3,161 GBP
₹404,025 INR
As of November 2, 2026
Save £3,697 GBP (54%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £6,858 GBP at NZ Jewellers · As of October 30, 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 843696740. Listed at 16 retailers as of October 30, 2026, with prices from £3,161 to £6,858, a £3,697 spread on the same certified stone. NZ Jewellers lists it at £6,858. 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
I
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.8°
Pavilion angle38.7°
OriginNatural
Grading LabIGI
CertificateIGI 843696740
Dimensions11.26 × 5.84 × 3.74 mm
L/W Ratio1.93
Girdle conditionFaceted
Top View
11.26 mm5.84 mm1.50 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 843696740
Side View
Table 57.0%Crown 37.8°Girdle: STK-THKPavilion 38.7°Culet: NoneDepth 64.0%

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: £6,858 GBP|Low: £3,161 GBP|High: £7,687 GBP|Avg: £4,623 GBP|-10.8%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
November 2, 2026
Retailer 11£3,161 GBP
Retailer 12£3,531 GBP
Retailer 8£3,677 GBP
Retailer 15£3,737 GBP
Retailer 5£3,838 GBP
Retailer 13£3,842 GBP
Retailer 16£4,028 GBP
Retailer 3£4,049 GBP
Retailer 9£4,049 GBP
Retailer 6£4,073 GBP
Retailer 7£4,100 GBP
Retailer 14£4,458 GBP
Retailer 10£4,672 GBP
Retailer 4£5,040 GBP
Retailer 2£6,449 GBP
NZ Jewellers£6,858 GBP

18 data points across 16 retailers

16 retailers£3,161 GBP to £6,858 GBP

A
Cheapest Retailer
-
£3,161 GBP
₹404,025 INR
A
Retailer 2
-
£3,531 GBP
$4,739 USD
View
A
Retailer 3
-
£3,677 GBP
$4,934 USD
View
A
Retailer 4
-
£3,737 GBP
$5,015 USD
View
Final sale: no returns
A
Retailer 5
-
£3,838 GBP
$5,150 USD
View
A
Retailer 6
-
£3,842 GBP
View
A
Retailer 7
-
£4,028 GBP
View
B+
Retailer 8
-
£4,049 GBP
$5,433 USD
View
A
Retailer 9
-
£4,049 GBP
$5,433 USD
View
A
Retailer 10
-
£4,073 GBP
$5,465 USD
View
Retailer 11
-
£4,100 GBP
$5,502 USD
View
Price last confirmed 8 days ago
B+
Retailer 12
-
£4,458 GBP
€5,698 EUR
View
B+
Retailer 13
-
£4,672 GBP
$6,269 USD
View
B+
Retailer 14
-
£5,040 GBP
ZAR 109,265 ZAR
View
B
Retailer 15
-
£6,449 GBP
View
Most Expensive
B
NZ Jewellers
23bbefd9-0c06-49a8-807a-6b34138f14a2 · Oct 30
£6,858 GBP
$9,203 USD
View
15 more retailers have this diamond
Prices start from £3,161 GBPSave up to £3,697 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
£3,161 GBP