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Cushion|Natural|GIA

0.80ct H SI1 Cushion Natural Diamond

EX • H/SI1 • GIA 6535020878

Certificate GIA 6535020878

Diamond specifications and retailer prices

From £811 GBP
$1,086 USD
As of November 1, 2026
Save £533 GBP (40%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £1,666 GBP at MOH London · As of October 25, 2026
View at MOH London

About this 0.8ct natural cushion diamond

This 0.8ct natural cushion sits in the just-under-one-carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6535020878. Listed at 10 retailers as of October 31, 2026, with a 66% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

0.80
Carat
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.3°
Pavilion angle54.2°
OriginNatural
Grading LabGIA
CertificateGIA 6535020878
Dimensions5.93 × 5.14 × 3.44 mm
L/W Ratio1.15
Top View
5.93 mm5.14 mm0.80 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6535020878
Side View
Table 69.0%Crown 32.3°Girdle: MED-THKPavilion 54.2°Culet: NoneDepth 67.0%

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 1
Current: £1,666 GBP|Low: £627 GBP|High: £1,681 GBP|Avg: £1,018 GBP|-0.9%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 3£627 GBP
Retailer 11£811 GBP
Retailer 9£838 GBP
Retailer 2£870 GBP
Retailer 6£893 GBP
Retailer 8£908 GBP
Retailer 10£975 GBP
Retailer 4£1,145 GBP
Retailer 5£1,270 GBP
Retailer 7£1,343 GBP
MOH London£1,666 GBP

21 data points across 11 retailers

10 retailers£811 GBP to £1,343 GBP

A
Cheapest Retailer
-
£811 GBP
$1,086 USD
A
Retailer 2
-
£838 GBP
$1,123 USD
View
Final sale: no returns
A
Retailer 3
-
£870 GBP
$1,166 USD
View
A
Retailer 4
-
£893 GBP
$1,196 USD
View
Retailer 5
-
£908 GBP
$1,217 USD
View
Price last confirmed 8 days ago
B+
Retailer 6
-
£975 GBP
$1,306 USD
View
B+
Retailer 7
-
£1,145 GBP
View
B+
Retailer 8
-
£1,270 GBP
€1,620 EUR
View
B+
Retailer 9
-
£1,343 GBP
ZAR 29,080 ZAR
View
Most Expensive
MOH London
3A452DFB8 · Oct 25
£1,666 GBP
View
Price last confirmed 8 days ago
9 more retailers have this diamond
Prices start from £811 GBPSave up to £533 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
0.80ct Cushion
£811 GBP