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Cushion|Natural|GIA

0.90ct E SI2 Cushion Natural Diamond

ID • E/SI2 • GIA 1403838880

Certificate GIA 1403838880

Diamond specifications and retailer prices

From £597 GBP
As of November 3, 2026
Save £1,104 GBP (65%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £1,701 GBP at Yorxs · As of November 6, 2026
View at Yorxs

About this 0.9ct natural cushion diamond

This 0.9ct natural cushion sits in the just-under-one-carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1403838880. Listed at 8 retailers as of November 3, 2026, with prices from £597 to £1,701, a £1,104 spread on the same certified stone. Yorxs lists it at £1,701. 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

0.90
Carat
E
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 1403838880
Dimensions5.35 × 5.27 × 3.63 mm
L/W Ratio1.02
Culet sizeNone
Key to symbols
Feather, Cloud, Crystal
Top View
5.35 mm5.27 mm0.90 ctE / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceStrong
CertificateGIA 1403838880
Side View
Table 61.0%CrownGirdle: MED-UNDPavilionCulet: NoneDepth 68.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 3
Current: £670 GBP|Low: £597 GBP|High: £1,899 GBP|Avg: £961 GBP|-10.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Yorxs
November 6, 2026
Retailer 7£597 GBP
Retailer 5£648 GBP
Retailer 1£670 GBP
Retailer 9£709 GBP
Retailer 6£728 GBP
Retailer 2£857 GBP
Retailer 8£921 GBP
Retailer 10£1,047 GBP
Retailer 4£1,186 GBP
Retailer 3£1,673 GBP
Yorxs£1,701 GBP

40 data points across 11 retailers

8 retailers£597 GBP to £1,701 GBP

A
Cheapest Retailer
-
£597 GBP
Final sale: no returns
Retailer 2
-
£648 GBP
View
Price last confirmed 8 days ago
A
Retailer 3
-
£670 GBP
View
A
Retailer 4
-
£728 GBP
View
A
Retailer 5
-
£921 GBP
View
A
Retailer 6
-
£1,186 GBP
View
B
Retailer 7
-
£1,673 GBP
View
Most Expensive
B
Yorxs
404320085 · Nov 6
£1,701 GBP
€2,168 EUR
View
7 more retailers have this diamond
Prices start from £597 GBPSave up to £1,104 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
0.90ct Cushion
£597 GBP