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Cushion|Natural|IGI BE

1.35ct D SI1 Cushion Natural Diamond

D/SI1 • IGI BE 799678562

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI BE 799678562

Diamond specifications and retailer prices

From £3,069 GBP
As of November 5, 2026
Save £471 GBP (13%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £3,541 GBP at The Diamond Guys · As of November 6, 2026
View at The Diamond Guys

About this 1.35ct natural cushion diamond

This 1.35ct natural cushion sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and SI1 clarity (slightly-included) and certified by IGI BE 799678562. Listed at 3 retailers as of November 5, 2026, with prices from £3,069 to £3,541, a £471 spread on the same certified stone. The Diamond Guys lists it at £3,541. 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

1.35
Carat
D
Colour
SI1
Clarity
-
Cut

Specifications

Cut
PolishVery Good
SymmetryVery Good
FluorescenceFaint
Crown angle39.8°
Pavilion angle35.4°
OriginNatural
Grading LabIGI BE
CertificateIGI BE 799678562
Dimensions8.14 × 5.20 × 3.62 mm
L/W Ratio1.57
Girdle conditionFaceted
Top View
8.14 mm5.20 mm1.35 ctD / SI1
OriginNatural
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateIGI BE 799678562
Side View
Table 64.0%Crown 39.8°Girdle: STK-ETKPavilion 35.4°CuletDepth 68.6%

Caratlytics Score

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

Price History

Last verified: Nov 5
Current: £3,069 GBP|Low: £3,069 GBP|High: £3,541 GBP|Avg: £3,305 GBP
Retailer 1
Retailer 2
The Diamond Guys
October 19, 2026
Retailer 1£3,069 GBP
Retailer 2£3,187 GBP
The Diamond Guys£3,541 GBP

2 data points across 3 retailers

3 retailers£3,069 GBP to £3,541 GBP

B+
Cheapest Retailer
-
£3,069 GBP
B+
Retailer 2
-
£3,187 GBP
View
Most Expensive
B
The Diamond Guys
1993636125 · Nov 6
£3,541 GBP
$4,739 USD
View
2 more retailers have this diamond
Prices start from £3,069 GBPSave up to £471 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+
1.35ct Cushion
£3,069 GBP