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Cushion|Natural|GIA

1.03ct K SI1 Cushion Natural Diamond

EX • K/SI1 • GIA 2554164000

Certificate GIA 2554164000

Diamond specifications and retailer prices

From £686 GBP
As of November 6, 2026
Save £255 GBP (27%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £941 GBP at GemTrove · As of November 6, 2026
View at GemTrove

About this 1.03ct natural cushion diamond

This 1.03ct 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 2554164000. Listed at 6 retailers as of November 6, 2026, with prices from £686 to £941, a £255 spread on the same certified stone. GemTrove lists it at £941. 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

1.03
Carat
K
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2554164000
Dimensions5.68 × 5.61 × 3.80 mm
L/W Ratio1.01
Top View
5.68 mm5.61 mm1.03 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2554164000
Side View
Table 60.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 67.8%

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: £941 GBP|Low: £686 GBP|High: £941 GBP|Avg: £807 GBP
GemTrove
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 6£686 GBP
Retailer 3£731 GBP
Retailer 2£776 GBP
Retailer 5£781 GBP
Retailer 4£846 GBP
GemTrove£941 GBP

41 data points across 6 retailers

6 retailers£686 GBP to £941 GBP

A
Cheapest Retailer
-
£686 GBP
A
Retailer 2
-
£731 GBP
View
A
Retailer 3
-
£776 GBP
View
A
Retailer 4
-
£781 GBP
View
A
Retailer 5
-
£846 GBP
View
Most Expensive
B+
GemTrove
GT-N-00959417-98 · Nov 6
£941 GBP
A$1,938 AUD
View
5 more retailers have this diamond
Prices start from £686 GBPSave up to £255 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
1.03ct Cushion
£686 GBP