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Cushion|Natural|IGI

1.03ct J SI2 Cushion Natural Diamond

GD • J/SI2 • IGI 788644178

Shape and cutting style on the report: Cushion antique cut

Certificate IGI 788644178

Diamond specifications and retailer prices

From £878 GBP
As of November 6, 2026
Save £1,420 GBP (62%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £2,297 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.03ct natural cushion diamond

This 1.03ct natural cushion sits in the classic one-carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a standard cut grade and certified by IGI 788644178. Listed at 9 retailers as of November 5, 2026, with prices from £878 to £2,297, a £1,420 spread on the same certified stone. NZ Jewellers lists it at £2,297. 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

1.03
Carat
J
Colour
SI2
Clarity
Good
Cut

Specifications

CutGood
PolishVery Good
SymmetryGood
FluorescenceFaint
Crown angle36.3°
Pavilion angle39.8°
OriginNatural
Grading LabIGI
CertificateIGI 788644178
Dimensions6.70 × 5.15 × 3.64 mm
L/W Ratio1.30
Girdle conditionFaceted
Culet sizeLarge
Top View
6.70 mm5.15 mm1.03 ctJ / SI2
OriginNatural
CutGood
PolishVery Good
SymmetryGood
FluorescenceFaint
CertificateIGI 788644178
Side View
Table 51.0%Crown 36.3°Girdle: THK-ETKPavilion 39.8°Culet: LargeDepth 70.7%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £2,297 GBP|Low: £796 GBP|High: £2,297 GBP|Avg: £1,204 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 2£878 GBP
Retailer 8£911 GBP
Retailer 6£942 GBP
Retailer 5£978 GBP
Retailer 9£989 GBP
Retailer 4£1,087 GBP
Retailer 3£1,310 GBP
Retailer 7£1,352 GBP
NZ Jewellers£2,297 GBP

19 data points across 9 retailers

9 retailers£878 GBP to £2,297 GBP

B+
Cheapest Retailer
-
£878 GBP
Final sale: no returns
B+
Retailer 2
-
£911 GBP
View
B+
Retailer 3
-
£942 GBP
View
B+
Retailer 4
-
£978 GBP
View
B+
Retailer 5
-
£989 GBP
View
B+
Retailer 6
-
£1,087 GBP
View
B
Retailer 7
-
£1,310 GBP
View
B
Retailer 8
-
£1,352 GBP
View
Most Expensive
C
NZ Jewellers
917ba01c-c227-4c62-88a6-571a47ca8e8e · Nov 5
£2,297 GBP
$3,075 USD
View
8 more retailers have this diamond
Prices start from £878 GBPSave up to £1,420 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.

B+
1.03ct Cushion
£878 GBP