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Cushion|Natural|GIA

0.78ct J SI2 Cushion Natural Diamond

VG • J/SI2 • GIA 6391477230

Certificate GIA 6391477230

Diamond specifications and retailer prices

From £1,123 GBP
$1,505 USD
As of October 28, 2026
Save £1,240 GBP (52%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £2,363 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 0.78ct natural cushion diamond

This 0.78ct natural cushion sits in the just-under-one-carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6391477230. Listed at 4 retailers as of October 28, 2026, with prices from £1,123 to £2,363, a £1,240 spread on the same certified stone. MOH London lists it at £2,363. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.78
Carat
J
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryGood
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6391477230
Dimensions5.56 × 5.19 × 3.38 mm
L/W Ratio1.07
Top View
5.56 mm5.19 mm0.78 ctJ / SI2
OriginNatural
CutVery Good
PolishVery Good
SymmetryGood
FluorescenceFaint
CertificateGIA 6391477230
Side View
Table 72.0%CrownGirdle: ThinPavilionCulet: NoneDepth 65.2%

Caratlytics Score

How it works →
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: Oct 28
Current: £2,363 GBP|Low: £1,123 GBP|High: £2,378 GBP|Avg: £1,687 GBP|+0.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
November 1, 2026
Retailer 4£1,123 GBP
Retailer 2£1,504 GBP
Retailer 3£1,832 GBP
MOH London£2,363 GBP

30 data points across 4 retailers

4 retailers£1,123 GBP to £2,363 GBP

B
Cheapest Retailer
-
£1,123 GBP
$1,505 USD
C
Retailer 2
-
£1,504 GBP
View
C
Retailer 3
-
£1,832 GBP
€2,338 EUR
View
Most Expensive
C
MOH London
BE312E559 · Oct 29
£2,363 GBP
View
3 more retailers have this diamond
Prices start from £1,123 GBPSave up to £1,240 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
0.78ct Cushion
£1,123 GBP