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Cushion|Natural|GIA

0.50ct E SI1 Cushion Natural Diamond

EX • E/SI1 • GIA 1553172550

Certificate GIA 1553172550

Diamond specifications and retailer prices

From £436 GBP
As of November 6, 2026
Save £654 GBP (60%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £1,089 GBP at MOH London · As of November 4, 2026
View at MOH London

About this 0.5ct natural cushion diamond

This 0.5ct natural cushion sits in the half to three-quarter 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 1553172550. Listed at 14 retailers as of November 4, 2026, with prices from £436 to £1,089, a £654 spread on the same certified stone. MOH London lists it at £1,089. 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

0.50
Carat
E
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1553172550
Dimensions5.41 × 4.16 × 2.83 mm
L/W Ratio1.30
Key to symbols
Crystal, Cloud, Feather
Top View
5.41 mm4.16 mm0.50 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryGood
FluorescenceNone
CertificateGIA 1553172550
Side View
Table 70.0%CrownGirdle: THK-ETKPavilionCulet: NoneDepth 68.0%

Caratlytics Score

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

Price History

Last verified: Nov 6
Current: £1,089 GBP|Low: £399 GBP|High: £1,103 GBP|Avg: £662 GBP|-1.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 11£436 GBP
Retailer 5£491 GBP
Retailer 8£509 GBP
Retailer 6£575 GBP
Retailer 2£576 GBP
Retailer 9£592 GBP
Retailer 10£613 GBP
Retailer 4£692 GBP
Retailer 3£710 GBP
Retailer 7£728 GBP
MOH London£1,089 GBP

35 data points across 11 retailers

14 retailers£436 GBP to £1,089 GBP

B+
Cheapest Retailer
-
£436 GBP
Final sale: no returns
B+
Retailer 2
-
£491 GBP
View
Retailer 3
-
£509 GBP
View
Price last confirmed 8 days ago
B+
Retailer 4
-
£545 GBP
View
B+
Retailer 5
-
£560 GBP
View
B+
Retailer 6
-
£571 GBP
View
B+
Retailer 7
-
£575 GBP
View
B+
Retailer 8
-
£576 GBP
View
B+
Retailer 9
-
£592 GBP
View
B+
Retailer 10
-
£613 GBP
View
B
Retailer 11
-
£692 GBP
View
Retailer 12
-
£710 GBP
View
Price last confirmed 32 days ago
B
Retailer 13
-
£728 GBP
View
Most Expensive
B
MOH London
2ED64C727 · Nov 4
£1,089 GBP
View
13 more retailers have this diamond
Prices start from £436 GBPSave up to £654 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+
0.50ct Cushion
£436 GBP