CaratHunter
Plans
Cushion|Natural|IGI

1.05ct J SI1 Cushion Natural Diamond

VG • J/SI1 • IGI 706537180

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI 706537180

Diamond specifications and retailer prices

From £1,118 GBP
A$2,308 AUD
As of November 2, 2026
Save £759 GBP (40%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £1,877 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 1.05ct natural cushion diamond

This 1.05ct natural cushion 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 706537180. Listed at 6 retailers as of November 1, 2026, with prices from £1,118 to £1,877, a £759 spread on the same certified stone. MOH London lists it at £1,877. 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

1.05
Carat
J
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceFaint
Crown angle37.3°
Pavilion angle33.1°
OriginNatural
Grading LabIGI
CertificateIGI 706537180
Dimensions5.85 × 5.42 × 3.78 mm
L/W Ratio1.08
Girdle conditionFaceted
Culet sizePointed
Top View
5.85 mm5.42 mm1.05 ctJ / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateIGI 706537180
Side View
Table 60.0%Crown 37.3°Girdle: STK-VTKPavilion 33.1°Culet: NoneDepth 69.7%

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 2
Current: £1,877 GBP|Low: £1,116 GBP|High: £1,963 GBP|Avg: £1,315 GBP|-4.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 2, 2026
Retailer 6£1,118 GBP
Retailer 5£1,126 GBP
Retailer 3£1,161 GBP
Retailer 4£1,251 GBP
Retailer 2£1,428 GBP
MOH London£1,877 GBP

41 data points across 6 retailers

6 retailers£1,118 GBP to £1,877 GBP

B+
Cheapest Retailer
-
£1,118 GBP
A$2,308 AUD
B+
Retailer 2
-
£1,126 GBP
$1,510 USD
View
B+
Retailer 3
-
£1,161 GBP
View
B+
Retailer 4
-
£1,251 GBP
ZAR 27,117 ZAR
View
B
Retailer 5
-
£1,428 GBP
€1,825 EUR
View
Most Expensive
B
MOH London
A57193373 · Nov 1
£1,877 GBP
View
5 more retailers have this diamond
Prices start from £1,118 GBPSave up to £759 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+
1.05ct Cushion
£1,118 GBP