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Marquise|Natural|IGI

1.01ct J SI1 Marquise Natural Diamond

EX • J/SI1 • IGI 805693963

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 805693963

Diamond specifications and retailer prices

From £917 GBP
As of November 6, 2026
Save £1,877 GBP (67%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £2,795 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.01ct natural marquise diamond

This 1.01ct natural marquise sits in the classic one-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI 805693963. Listed at 16 retailers as of November 5, 2026, with prices from £917 to £2,795, a £1,877 spread on the same certified stone. NZ Jewellers lists it at £2,795. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.01
Carat
J
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle38.3°
Pavilion angle40°
OriginNatural
Grading LabIGI
CertificateIGI 805693963
Dimensions10.24 × 5.14 × 3.27 mm
L/W Ratio1.99
Girdle conditionFaceted
Top View
10.24 mm5.14 mm1.01 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 805693963
Side View
Table 61.0%Crown 38.3°Girdle: Slightly ThickPavilion 40°Culet: NoneDepth 63.6%

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 6
Current: £2,795 GBP|Low: £917 GBP|High: £2,795 GBP|Avg: £1,384 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
Retailer 13
November 6, 2026
Retailer 2£917 GBP
Retailer 5£1,057 GBP
Retailer 6£1,111 GBP
Retailer 4£1,142 GBP
Retailer 3£1,146 GBP
Retailer 12£1,146 GBP
Retailer 13£1,198 GBP
Retailer 7£1,287 GBP
Retailer 10£1,322 GBP
Retailer 8£1,398 GBP
Retailer 11£1,564 GBP
Retailer 9£2,002 GBP
NZ Jewellers£2,795 GBP

26 data points across 13 retailers

16 retailers£917 GBP to £2,795 GBP

A
Cheapest Retailer
-
£917 GBP
A
Retailer 2
-
£1,057 GBP
View
Final sale: no returns
A
Retailer 3
-
£1,062 GBP
View
A
Retailer 4
-
£1,111 GBP
View
A
Retailer 5
-
£1,142 GBP
View
Retailer 6
-
£1,146 GBP
View
Price last confirmed 9 days ago
A
Retailer 7
-
£1,146 GBP
View
A
Retailer 8
-
£1,198 GBP
View
B+
Retailer 9
-
£1,210 GBP
View
B+
Retailer 10
-
£1,247 GBP
View
B+
Retailer 11
-
£1,287 GBP
View
A
Retailer 12
-
£1,322 GBP
View
A
Retailer 13
-
£1,398 GBP
View
B+
Retailer 14
-
£1,564 GBP
View
B
Retailer 15
-
£2,002 GBP
View
Most Expensive
B
NZ Jewellers
cedf99a2-de37-4dc7-a586-ecf45c7fde6b · Nov 5
£2,795 GBP
$3,741 USD
View
15 more retailers have this diamond
Prices start from £917 GBPSave up to £1,877 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
1.01ct Marquise
£917 GBP