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Cushion|Natural|GIA

0.78ct E SI1 Cushion Natural Diamond

EX • E/SI1 • GIA 1568091837

Certificate GIA 1568091837

Diamond specifications and retailer prices

From £538 GBP
$716 USD
As of October 28, 2026
Save £267 GBP (33%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £804 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 1568091837. Listed at 9 retailers as of October 28, 2026, with prices from £538 to £804, a £267 spread on the same certified stone. GemTrove lists it at £804. 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
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 1568091837
Dimensions5.09 × 5.07 × 3.45 mm
L/W Ratio1.00
Culet sizeNone
Key to symbols
Crystal
Top View
5.09 mm5.07 mm0.78 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 1568091837
Side View
Table 62.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 68.0%

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: Oct 28
Current: £804 GBP|Low: £471 GBP|High: £804 GBP|Avg: £686 GBP
GemTrove
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 30, 2026
Retailer 7£538 GBP
Retailer 3£647 GBP
Retailer 6£665 GBP
Retailer 5£671 GBP
Retailer 2£671 GBP
Retailer 4£721 GBP
Retailer 8£721 GBP
Retailer 9£751 GBP
GemTrove£804 GBP

33 data points across 9 retailers

9 retailers£538 GBP to £804 GBP

A
Cheapest Retailer
-
£538 GBP
$716 USD
Final sale: no returns
A
Retailer 2
-
£647 GBP
$862 USD
View
A
Retailer 3
-
£665 GBP
SGD 1,197 SGD
View
A
Retailer 4
-
£671 GBP
$893 USD
View
A
Retailer 5
-
£671 GBP
View
A
Retailer 6
-
£721 GBP
$960 USD
View
A
Retailer 7
-
£721 GBP
$960 USD
View
A
Retailer 8
-
£751 GBP
$1,000 USD
View
Most Expensive
A
GemTrove
GT-N-01244915-98 · Oct 29
£804 GBP
A$1,648 AUD
View
8 more retailers have this diamond
Prices start from £538 GBPSave up to £267 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
£538 GBP