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Cushion|Natural|IGI

0.81ct F SI2 Cushion Natural Diamond

EX • F/SI2 • IGI 229603686

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI 229603686

Diamond specifications and retailer prices

From £531 GBP
$712 USD
As of November 2, 2026
Save £141 GBP (21%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £671 GBP at Diamond Heaven · As of November 2, 2026
View at Diamond Heaven

About this 0.81ct natural cushion diamond

This 0.81ct natural cushion sits in the just-under-one-carat band, graded F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI 229603686. Listed at 4 retailers as of November 2, 2026, with prices from £531 to £671, a £141 spread on the same certified stone. Diamond Heaven lists it at £671. 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

0.81
Carat
F
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle37.7°
Pavilion angle37.4°
OriginNatural
Grading LabIGI
CertificateIGI 229603686
Dimensions5.10 × 4.98 × 3.66 mm
L/W Ratio1.02
Girdle conditionFaceted
Culet sizePointed
Top View
5.10 mm4.98 mm0.81 ctF / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI 229603686
Side View
Table 65.0%Crown 37.7°Girdle: THK-ETKPavilion 37.4°Culet: NoneDepth 73.5%

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 2
Current: £671 GBP|Low: £481 GBP|High: £771 GBP|Avg: £600 GBP|-2.2%
Diamond Heaven
Retailer 2
Retailer 3
Retailer 4
November 1, 2026
Retailer 4£531 GBP
Retailer 2£574 GBP
Retailer 3£583 GBP
Diamond Heaven£671 GBP

15 data points across 4 retailers

4 retailers£531 GBP to £671 GBP

B+
Cheapest Retailer
-
£531 GBP
$712 USD
Final sale: no returns
A
Retailer 2
-
£574 GBP
$770 USD
View
A
Retailer 3
-
£583 GBP
$783 USD
View
Most Expensive
B+
Diamond Heaven
0.81SI2F22864C35N · Nov 2
£671 GBP
View
3 more retailers have this diamond
Prices start from £531 GBPSave up to £141 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
0.81ct Cushion
£531 GBP