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Cushion|Natural|GIA

1.05ct K IF Cushion Natural Diamond

EX • K/IF • GIA 1539156388

Certificate GIA 1539156388

Diamond specifications and retailer prices

From £1,180 GBP
As of November 6, 2026
Save £689 GBP (37%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £1,869 GBP at MOH London · As of November 4, 2026
View at MOH London

About this 1.05ct natural cushion diamond

This 1.05ct natural cushion sits in the classic one-carat band, graded K colour (faint-tinted) and IF clarity (flawless or internally-flawless), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1539156388. Listed at 6 retailers as of November 4, 2026, with prices from £1,180 to £1,869, a £689 spread on the same certified stone. MOH London lists it at £1,869. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.05
Carat
K
Colour
IF
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1539156388
Dimensions5.67 × 5.64 × 3.83 mm
L/W Ratio1.01
Top View
5.67 mm5.64 mm1.05 ctK / IF
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1539156388
Side View
Table 70.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 68.0%

Caratlytics Score

How it works →
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: Nov 6
Current: £1,869 GBP|Low: £1,162 GBP|High: £1,991 GBP|Avg: £1,402 GBP|-5.7%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 3£1,180 GBP
Retailer 6£1,228 GBP
Retailer 5£1,270 GBP
Retailer 4£1,305 GBP
Retailer 2£1,482 GBP
MOH London£1,869 GBP

36 data points across 6 retailers

6 retailers£1,180 GBP to £1,869 GBP

A
Cheapest Retailer
-
£1,180 GBP
A
Retailer 2
-
£1,228 GBP
View
A
Retailer 3
-
£1,270 GBP
View
A
Retailer 4
-
£1,305 GBP
View
B+
Retailer 5
-
£1,482 GBP
View
Most Expensive
B+
MOH London
936224042 · Nov 4
£1,869 GBP
View
5 more retailers have this diamond
Prices start from £1,180 GBPSave up to £689 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
1.05ct Cushion
£1,180 GBP