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Marquise|Natural|IGI

1.01ct J SI1 Marquise Natural Diamond

VG • J/SI1 • IGI 689598852

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 689598852

Diamond specifications and retailer prices

From £1,058 GBP
As of November 6, 2026
Save £1,739 GBP (62%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £2,796 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 very-good cut grade and certified by IGI 689598852. Listed at 17 retailers as of November 5, 2026, with prices from £1,058 to £2,796, a £1,739 spread on the same certified stone. NZ Jewellers lists it at £2,796. 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

1.01
Carat
J
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36.8°
Pavilion angle39.7°
OriginNatural
Grading LabIGI
CertificateIGI 689598852
Dimensions9.21 × 5.12 × 3.44 mm
L/W Ratio1.80
Girdle conditionFaceted
Culet sizePointed
Top View
9.21 mm5.12 mm1.01 ctJ / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 689598852
Side View
Table 57.0%Crown 36.8°Girdle: STK-THKPavilion 39.7°Culet: NoneDepth 67.2%

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: £1,288 GBP|Low: £970 GBP|High: £2,032 GBP|Avg: £1,296 GBP|+4.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 7£1,058 GBP
Retailer 2£1,062 GBP
Retailer 6£1,076 GBP
Retailer 9£1,142 GBP
Retailer 8£1,198 GBP
Retailer 10£1,210 GBP
Retailer 1£1,288 GBP
Retailer 3£1,399 GBP
Retailer 5£1,558 GBP
Retailer 4£2,002 GBP

44 data points across 10 retailers

17 retailers£1,058 GBP to £2,796 GBP

B+
Cheapest Retailer
-
£1,058 GBP
Final sale: no returns
A
Retailer 2
-
£1,062 GBP
View
A
Retailer 3
-
£1,076 GBP
View
B+
Retailer 4
-
£1,142 GBP
View
B+
Retailer 5
-
£1,147 GBP
View
Retailer 6
-
£1,147 GBP
View
Price last confirmed 8 days ago
B+
Retailer 7
-
£1,198 GBP
View
B+
Retailer 8
-
£1,199 GBP
View
B+
Retailer 9
-
£1,210 GBP
View
B+
Retailer 10
-
£1,248 GBP
View
B+
Retailer 11
-
£1,288 GBP
View
Retailer 12
-
£1,323 GBP
View
Price last confirmed 61 days ago
B+
Retailer 13
-
£1,323 GBP
View
B+
Retailer 14
-
£1,399 GBP
View
B+
Retailer 15
-
£1,558 GBP
View
B
Retailer 16
-
£2,002 GBP
View
Most Expensive
C
NZ Jewellers
18a7ab83-2242-4778-9df9-c5a7ba029c24 · Nov 5
£2,796 GBP
$3,743 USD
View
16 more retailers have this diamond
Prices start from £1,058 GBPSave up to £1,739 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
£1,058 GBP