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Cushion|Natural|GIA

1.00ct M SI1 Cushion Natural Diamond

GD • M/SI1 • GIA 3555391514

Certificate GIA 3555391514

Diamond specifications and retailer prices

From £568 GBP
As of November 4, 2026
Save £145 GBP (20%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £713 GBP at GemTrove · As of November 6, 2026
View at GemTrove

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 standard cut grade stated by the retailer rather than the lab and certified by GIA 3555391514. Listed at 2 retailers as of November 4, 2026, with prices from £568 to £713, a £145 spread on the same certified stone. GemTrove lists it at £713. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.00
Carat
M
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 3555391514
Dimensions5.62 × 5.38 × 3.73 mm
L/W Ratio1.04
Culet sizeNone
Key to symbols
Crystal, Needle, Feather, Natural
Top View
5.62 mm5.38 mm1.00 ctM / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 3555391514
Side View
Table 60.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 69.3%

Caratlytics Score

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

Price History

Last verified: Nov 4
Current: £713 GBP|Low: £568 GBP|High: £713 GBP|Avg: £651 GBP
GemTrove
Retailer 2
October 17, 2026
Retailer 2£568 GBP
GemTrove£713 GBP

3 data points across 2 retailers

2 retailers£568 GBP to £713 GBP

B+
Cheapest Retailer
-
£568 GBP
Most Expensive
B+
GemTrove
GT-N-00979316-98 · Nov 6
£713 GBP
A$1,468 AUD
View
1 more retailer has this diamond
Prices start from £568 GBPSave up to £145 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
£568 GBP