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Cushion|Natural|GIA

1.00ct K SI1 Cushion Natural Diamond

EX • K/SI1 • GIA 3345443697

Certificate GIA 3345443697

Diamond specifications and retailer prices

From £1,417 GBP
As of November 6, 2026
Save £1,659 GBP (54%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £3,076 GBP at MOH London · As of November 2, 2026
View at MOH London

About this 1ct natural cushion diamond

This 1ct natural cushion sits in the classic 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 3345443697. Listed at 14 retailers as of November 2, 2026, with prices from £1,417 to £3,076, a £1,659 spread on the same certified stone. MOH London lists it at £3,076. 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

1.00
Carat
K
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 3345443697
Dimensions5.79 × 5.74 × 3.92 mm
L/W Ratio1.01
Top View
5.79 mm5.74 mm1.00 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 3345443697
Side View
Table 59.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 68.2%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £3,076 GBP|Low: £1,412 GBP|High: £3,113 GBP|Avg: £1,903 GBP
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 5£1,412 GBP
Retailer 8£1,417 GBP
Retailer 6£1,591 GBP
Retailer 9£1,606 GBP
Retailer 7£1,743 GBP
Retailer 3£1,908 GBP
Retailer 4£2,143 GBP
Retailer 2£2,181 GBP
MOH London£3,076 GBP

45 data points across 9 retailers

14 retailers£1,417 GBP to £3,076 GBP

Retailer 1
-
£1,412 GBP
Price last confirmed 9 days ago
B+
Retailer 2
-
£1,417 GBP
View
B+
Retailer 3
-
£1,430 GBP
View
B+
Retailer 4
-
£1,437 GBP
View
B+
Retailer 5
-
£1,497 GBP
View
B+
Retailer 6
-
£1,535 GBP
View
Retailer 7
-
£1,591 GBP
View
Price last confirmed 8 days ago
B
Retailer 8
-
£1,606 GBP
View
B
Retailer 9
-
£1,721 GBP
View
B
Retailer 10
-
£1,743 GBP
View
B
Retailer 11
-
£1,908 GBP
View
B
Retailer 12
-
£2,143 GBP
View
B
Retailer 13
-
£2,181 GBP
View
Most Expensive
B
MOH London
55F84CC4A · Nov 2
£3,076 GBP
View
13 more retailers have this diamond
Prices start from £1,417 GBPSave up to £1,659 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+
1.00ct Cushion
£1,417 GBP