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Cushion|Natural|GIA

0.78ct E SI1 Cushion Natural Diamond

EX • E/SI1 • GIA 5553059681

Certificate GIA 5553059681

Diamond specifications and retailer prices

From £520 GBP
$692 USD
As of October 28, 2026
Save £304 GBP (37%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £824 GBP at GemTrove · As of October 29, 2026
View at GemTrove

About this 0.78ct natural cushion diamond

This 0.78ct natural cushion sits in the just-under-one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5553059681. Listed at 9 retailers as of October 28, 2026, with prices from £520 to £824, a £304 spread on the same certified stone. GemTrove lists it at £824. 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

0.78
Carat
E
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 5553059681
Dimensions5.17 × 5.05 × 3.43 mm
L/W Ratio1.02
Top View
5.17 mm5.05 mm0.78 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 5553059681
Side View
Table 60.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 68.0%

Caratlytics Score

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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: Oct 28
Current: £824 GBP|Low: £460 GBP|High: £824 GBP|Avg: £658 GBP
GemTrove
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 29, 2026
Retailer 10£493 GBP
Retailer 8£520 GBP
Retailer 5£626 GBP
Retailer 7£643 GBP
Retailer 6£650 GBP
Retailer 2£676 GBP
Retailer 3£698 GBP
Retailer 9£698 GBP
Retailer 4£721 GBP
GemTrove£824 GBP

32 data points across 10 retailers

9 retailers£520 GBP to £824 GBP

A
Cheapest Retailer
-
£520 GBP
$692 USD
Final sale: no returns
A
Retailer 2
-
£626 GBP
$833 USD
View
A
Retailer 3
-
£643 GBP
SGD 1,157 SGD
View
A
Retailer 4
-
£650 GBP
$865 USD
View
A
Retailer 5
-
£676 GBP
View
A
Retailer 6
-
£698 GBP
$930 USD
View
A
Retailer 7
-
£698 GBP
$930 USD
View
A
Retailer 8
-
£721 GBP
$960 USD
View
Most Expensive
A
GemTrove
GT-N-00957436-98 · Oct 29
£824 GBP
A$1,688 AUD
View
8 more retailers have this diamond
Prices start from £520 GBPSave up to £304 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
0.78ct Cushion
£520 GBP