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Cushion|Natural|GIA

1.01ct E SI1 Cushion Natural Diamond

ID • E/SI1 • GIA 6555423952

Certificate GIA 6555423952

Diamond specifications and retailer prices

From £899 GBP
As of November 6, 2026
Save £583 GBP (39%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £5,944 GBP at Cape Diamonds · As of October 22, 2026
View at Cape Diamonds

About this 1.01ct natural cushion diamond

This 1.01ct 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 6555423952. Listed at 20 retailers as of November 6, 2026, with a 65% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.01
Carat
E
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceMedium
Crown angle40°
Pavilion angle34.1°
OriginNatural
Grading LabGIA
CertificateGIA 6555423952
Dimensions6.00 × 5.49 × 3.74 mm
L/W Ratio1.09
Girdle conditionFaceted
Culet sizeNone
Top View
6.00 mm5.49 mm1.01 ctE / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 6555423952
Side View
Table 61.0%Crown 40°Girdle: MED-THKPavilion 34.1°Culet: NDepth 68.2%

Caratlytics Score

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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: £5,944 GBP|Low: £840 GBP|High: £5,944 GBP|Avg: £1,725 GBP|+325.9%
Cape Diamonds
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
Retailer 19
Retailer 20
November 6, 2026
Retailer 15£899 GBP
Retailer 8£917 GBP
Retailer 13£941 GBP
Retailer 16£1,003 GBP
Retailer 9£1,061 GBP
Retailer 6£1,083 GBP
Retailer 14£1,127 GBP
Retailer 11£1,174 GBP
Retailer 3£1,187 GBP
Retailer 17£1,263 GBP
Retailer 20£1,263 GBP
Retailer 18£1,307 GBP
Retailer 19£1,426 GBP
Retailer 2£1,482 GBP
Retailer 12£1,529 GBP
Retailer 7£1,597 GBP
Retailer 10£2,075 GBP
Retailer 5£3,969 GBP
Retailer 4£4,161 GBP
Cape Diamonds£5,944 GBP

30 data points across 20 retailers

20 retailers£899 GBP to £1,482 GBP

A
Cheapest Retailer
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£899 GBP
A
Retailer 2
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£941 GBP
View
A
Retailer 3
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£1,003 GBP
View
Retailer 4
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£1,061 GBP
View
Price last confirmed 29 days ago
A
Retailer 5
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£1,083 GBP
View
Final sale: no returns
A
Retailer 6
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£1,127 GBP
View
Retailer 7
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£1,174 GBP
View
Price last confirmed 29 days ago
A
Retailer 8
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£1,187 GBP
View
Retailer 9
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£1,248 GBP
View
Price last confirmed 29 days ago
A
Retailer 10
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£1,263 GBP
View
A
Retailer 11
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£1,263 GBP
View
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Retailer 12
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£1,290 GBP
View
A
Retailer 13
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£1,307 GBP
View
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Retailer 14
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£1,426 GBP
View
A
Retailer 15
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£1,482 GBP
View
Retailer 16
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£1,529 GBP
View
Price last confirmed 36 days ago
Retailer 17
-
£2,075 GBP
View
Price last confirmed 29 days ago
Retailer 18
-
£3,969 GBP
View
Price last confirmed 14 days ago
Retailer 19
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£4,161 GBP
View
Price last confirmed 13 days ago
Most Expensive
Cape Diamonds
cert_6555423952 · Oct 22
£5,944 GBP
ZAR 128,535 ZAR
View
Price last confirmed 15 days ago
19 more retailers have this diamond
Prices start from £899 GBPSave up to £583 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
1.01ct Cushion
£899 GBP