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Marquise|Natural|IGI

1.51ct E SI2 Marquise Natural Diamond

VG • E/SI2 • IGI 811694563

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 811694563

Diamond specifications and retailer prices

From £3,101 GBP
₹395,766 INR
As of November 2, 2026
Save £3,277 GBP (51%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £6,378 GBP at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.51ct natural marquise diamond

This 1.51ct natural marquise sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by IGI 811694563. Listed at 15 retailers as of October 30, 2026, with prices from £3,101 to £6,378, a £3,277 spread on the same certified stone. NZ Jewellers lists it at £6,378. 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

1.51
Carat
E
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryExcellent
FluorescenceStrong
Crown angle44.6°
Pavilion angle36.9°
OriginNatural
Grading LabIGI
CertificateIGI 811694563
Dimensions11.15 × 5.86 × 3.70 mm
L/W Ratio1.90
Girdle conditionFaceted
Top View
11.15 mm5.86 mm1.51 ctE / SI2
OriginNatural
CutVery Good
PolishVery Good
SymmetryExcellent
FluorescenceStrong
CertificateIGI 811694563
Side View
Table 61.0%Crown 44.6°Girdle: STK-THKPavilion 36.9°Culet: NoneDepth 63.1%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: £6,378 GBP|Low: £3,101 GBP|High: £6,836 GBP|Avg: £4,047 GBP|-6.7%
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
November 2, 2026
Retailer 8£3,101 GBP
Retailer 14£3,239 GBP
Retailer 13£3,306 GBP
Retailer 11£3,316 GBP
Retailer 5£3,324 GBP
Retailer 9£3,385 GBP
Retailer 15£3,592 GBP
Retailer 4£3,629 GBP
Retailer 12£3,933 GBP
Retailer 6£4,055 GBP
Retailer 10£4,065 GBP
Retailer 7£4,087 GBP
Retailer 2£4,145 GBP
Retailer 3£5,722 GBP
NZ Jewellers£6,378 GBP

15 data points across 15 retailers

15 retailers£3,101 GBP to £6,378 GBP

A
Cheapest Retailer
-
£3,101 GBP
₹395,766 INR
A
Retailer 2
-
£3,239 GBP
$4,340 USD
View
A
Retailer 3
-
£3,306 GBP
$4,430 USD
View
A
Retailer 4
-
£3,316 GBP
$4,443 USD
View
Final sale: no returns
A
Retailer 5
-
£3,324 GBP
$4,454 USD
View
A
Retailer 6
-
£3,385 GBP
View
A
Retailer 7
-
£3,592 GBP
$4,813 USD
View
A
Retailer 8
-
£3,629 GBP
$4,863 USD
View
A
Retailer 9
-
£3,933 GBP
$5,270 USD
View
Retailer 10
-
£4,055 GBP
$5,433 USD
View
Price last confirmed 16 days ago
A
Retailer 11
-
£4,065 GBP
€5,187 EUR
View
Retailer 12
-
£4,087 GBP
$5,476 USD
View
Price last confirmed 17 days ago
A
Retailer 13
-
£4,145 GBP
$5,554 USD
View
B+
Retailer 14
-
£5,722 GBP
View
Most Expensive
B+
NZ Jewellers
157ccc28-e7ba-430a-803f-13a072cb24b5 · Oct 30
£6,378 GBP
$8,546 USD
View
14 more retailers have this diamond
Prices start from £3,101 GBPSave up to £3,277 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
1.51ct Marquise
£3,101 GBP