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Cushion|Natural|GIA

1.00ct M SI1 Cushion Natural Diamond

ID • M/SI1 • GIA 7451780590

Certificate GIA 7451780590

Diamond specifications and retailer prices

From £545 GBP
As of November 6, 2026
Save £404 GBP (43%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £948 GBP at Yorxs · As of November 6, 2026
View at Yorxs

About this 1ct natural cushion diamond

This 1ct natural cushion sits in the classic one-carat band, graded M 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 7451780590. Listed at 9 retailers as of November 6, 2026, with prices from £545 to £948, a £404 spread on the same certified stone. Yorxs lists it at £948. 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
M
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 7451780590
Dimensions6.01 × 5.22 × 3.65 mm
L/W Ratio1.15
Top View
6.01 mm5.22 mm1.00 ctM / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 7451780590
Side View
Table 64.0%CrownGirdle: Extremely ThickPavilionCulet: NoneDepth 69.9%

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: £545 GBP|Low: £545 GBP|High: £994 GBP|Avg: £776 GBP|-8.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Yorxs
November 6, 2026
Retailer 7£545 GBP
Retailer 1£545 GBP
Retailer 6£717 GBP
Retailer 4£733 GBP
Retailer 8£813 GBP
Retailer 3£832 GBP
Retailer 5£844 GBP
Retailer 2£894 GBP
Yorxs£948 GBP

45 data points across 9 retailers

9 retailers£545 GBP to £948 GBP

A
Cheapest Retailer
-
£545 GBP
A
Retailer 2
-
£545 GBP
View
B+
Retailer 3
-
£717 GBP
View
Retailer 4
-
£733 GBP
View
Price last confirmed 12 days ago
B+
Retailer 5
-
£813 GBP
View
B+
Retailer 6
-
£832 GBP
View
B+
Retailer 7
-
£844 GBP
View
B+
Retailer 8
-
£894 GBP
View
Most Expensive
B+
Yorxs
622685051 · Nov 6
£948 GBP
€1,209 EUR
View
8 more retailers have this diamond
Prices start from £545 GBPSave up to £404 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
1.00ct Cushion
£545 GBP