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Cushion|Natural|GIA

1.03ct E SI1 Cushion Natural Diamond

EX • E/SI1 • GIA 1558304813

Certificate GIA 1558304813

Diamond specifications and retailer prices

From £1,157 GBP
As of November 6, 2026
Save £1,507 GBP (57%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £2,663 GBP at MOH London · As of November 4, 2026
View at MOH London

About this 1.03ct natural cushion diamond

This 1.03ct natural cushion sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1558304813. Listed at 19 retailers as of November 4, 2026, with prices from £1,157 to £2,663, a £1,507 spread on the same certified stone. MOH London lists it at £2,663. 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
E
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1558304813
Dimensions5.80 × 5.80 × 3.87 mm
L/W Ratio1.00
Girdle conditionFaceted
Top View
5.80 mm5.80 mm1.03 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1558304813
Side View
Table 66.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 66.8%

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: £2,663 GBP|Low: £1,138 GBP|High: £2,796 GBP|Avg: £1,595 GBP|-4.8%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
November 6, 2026
Retailer 18£1,157 GBP
Retailer 7£1,183 GBP
Retailer 4£1,274 GBP
Retailer 15£1,301 GBP
Retailer 2£1,362 GBP
Retailer 9£1,381 GBP
Retailer 10£1,415 GBP
Retailer 6£1,420 GBP
Retailer 17£1,427 GBP
Retailer 8£1,475 GBP
Retailer 11£1,479 GBP
Retailer 3£1,490 GBP
Retailer 14£1,656 GBP
Retailer 5£1,671 GBP
Retailer 13£1,860 GBP
Retailer 12£2,069 GBP
Retailer 16£2,402 GBP
MOH London£2,663 GBP

21 data points across 18 retailers

19 retailers£1,157 GBP to £2,663 GBP

A
Cheapest Retailer
-
£1,157 GBP
A
Retailer 2
-
£1,183 GBP
View
A
Retailer 3
-
£1,274 GBP
View
Final sale: no returns
A
Retailer 4
-
£1,301 GBP
View
A
Retailer 5
-
£1,362 GBP
View
A
Retailer 6
-
£1,381 GBP
View
A
Retailer 7
-
£1,415 GBP
View
A
Retailer 8
-
£1,420 GBP
View
A
Retailer 9
-
£1,427 GBP
View
A
Retailer 10
-
£1,475 GBP
View
A
Retailer 11
-
£1,479 GBP
View
A
Retailer 12
-
£1,490 GBP
View
A
Retailer 13
-
£1,656 GBP
View
A
Retailer 14
-
£1,671 GBP
View
B+
Retailer 15
-
£1,860 GBP
View
Retailer 16
-
£1,983 GBP
View
Price last confirmed 31 days ago
B+
Retailer 17
-
£2,069 GBP
View
B+
Retailer 18
-
£2,402 GBP
View
Most Expensive
B+
MOH London
2853DEC1A · Nov 4
£2,663 GBP
View
18 more retailers have this diamond
Prices start from £1,157 GBPSave up to £1,507 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
£1,157 GBP