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Cushion|Natural|GIA

0.78ct K SI1 Cushion Natural Diamond

EX • K/SI1 • GIA 2215334678

Certificate GIA 2215334678

Diamond specifications and retailer prices

From £954 GBP
As of November 4, 2026
Save £1,036 GBP (52%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £1,990 GBP at MOH London · As of November 2, 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2215334678. Listed at 9 retailers as of November 2, 2026, with prices from £954 to £1,990, a £1,036 spread on the same certified stone. MOH London lists it at £1,990. 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
K
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryGood
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2215334678
Dimensions9.67 × 4.66 × 2.94 mm
L/W Ratio2.08
Culet sizeNone
Top View
9.67 mm4.66 mm0.78 ctK / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryGood
FluorescenceFaint
CertificateGIA 2215334678
Side View
Table 53.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 63.1%

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 4
Current: £1,990 GBP|Low: £1,106 GBP|High: £2,014 GBP|Avg: £1,439 GBP|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 5£1,106 GBP
Retailer 6£1,141 GBP
Retailer 3£1,254 GBP
Retailer 2£1,465 GBP
Retailer 4£1,696 GBP
MOH London£1,990 GBP

43 data points across 6 retailers

9 retailers£954 GBP to £1,990 GBP

B
Cheapest Retailer
-
£954 GBP
B
Retailer 2
-
£977 GBP
View
B
Retailer 3
-
£1,106 GBP
View
B
Retailer 4
-
£1,141 GBP
View
B
Retailer 5
-
£1,254 GBP
View
B
Retailer 6
-
£1,290 GBP
View
B
Retailer 7
-
£1,465 GBP
View
B
Retailer 8
-
£1,696 GBP
View
Most Expensive
B
MOH London
CECA453E8 · Nov 2
£1,990 GBP
View
8 more retailers have this diamond
Prices start from £954 GBPSave up to £1,036 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
£954 GBP