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Cushion|Natural|GIA

0.80ct J SI1 Cushion Natural Diamond

EX • J/SI1 • GIA 6405433327

Certificate GIA 6405433327

Diamond specifications and retailer prices

From £1,341 GBP
As of November 5, 2026
Save £902 GBP (40%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £2,243 GBP at MOH London · As of November 4, 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 J 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 6405433327. Listed at 8 retailers as of November 4, 2026, with prices from £1,341 to £2,243, a £902 spread on the same certified stone. MOH London lists it at £2,243. 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
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6405433327
Dimensions5.43 × 5.04 × 3.43 mm
L/W Ratio1.08
Top View
5.43 mm5.04 mm0.80 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6405433327
Side View
Table 59.0%CrownGirdle: VTN-VTKPavilionCulet: NoneDepth 68.1%

Caratlytics Score

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B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: £2,243 GBP|Low: £1,341 GBP|High: £2,276 GBP|Avg: £1,672 GBP|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
November 6, 2026
Retailer 4£1,341 GBP
Retailer 3£1,438 GBP
Retailer 2£1,646 GBP
MOH London£2,243 GBP

43 data points across 4 retailers

8 retailers£1,341 GBP to £2,243 GBP

B
Cheapest Retailer
-
£1,341 GBP
B
Retailer 2
-
£1,427 GBP
View
B
Retailer 3
-
£1,427 GBP
View
B
Retailer 4
-
£1,438 GBP
View
B
Retailer 5
-
£1,472 GBP
View
B
Retailer 6
-
£1,487 GBP
View
B
Retailer 7
-
£1,646 GBP
View
Most Expensive
B
MOH London
E3160B833 · Nov 4
£2,243 GBP
View
7 more retailers have this diamond
Prices start from £1,341 GBPSave up to £902 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
0.80ct Cushion
£1,341 GBP