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Cushion|Natural|GIA

0.51ct E SI1 Cushion Natural Diamond

VG • E/SI1 • GIA 1555383416

Certificate GIA 1555383416

Diamond specifications and retailer prices

From £335 GBP
As of November 6, 2026
Save £551 GBP (62%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £885 GBP at MOH London · As of November 4, 2026
View at MOH London

About this 0.51ct natural cushion diamond

This 0.51ct natural cushion sits in the half to three-quarter carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 1555383416. Listed at 17 retailers as of November 4, 2026, with prices from £335 to £885, a £551 spread on the same certified stone. MOH London lists it at £885. 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

0.51
Carat
E
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1555383416
Dimensions5.31 × 4.24 × 2.92 mm
L/W Ratio1.25
Girdle conditionFaceted
Top View
5.31 mm4.24 mm0.51 ctE / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1555383416
Side View
Table 69.0%CrownGirdle: MED-VTKPavilionCulet: 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 6
Current: £885 GBP|Low: £354 GBP|High: £910 GBP|Avg: £522 GBP|-2.7%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 3£354 GBP
Retailer 4£400 GBP
Retailer 6£408 GBP
Retailer 2£414 GBP
Retailer 5£468 GBP
Retailer 7£476 GBP
Retailer 11£480 GBP
Retailer 12£534 GBP
Retailer 9£569 GBP
Retailer 10£585 GBP
Retailer 8£595 GBP
MOH London£885 GBP

27 data points across 12 retailers

17 retailers£335 GBP to £885 GBP

A
Cheapest Retailer
-
£335 GBP
A
Retailer 2
-
£354 GBP
View
Final sale: no returns
A
Retailer 3
-
£400 GBP
View
A
Retailer 4
-
£408 GBP
View
A
Retailer 5
-
£414 GBP
View
B+
Retailer 6
-
£421 GBP
View
B+
Retailer 7
-
£468 GBP
View
B+
Retailer 8
-
£476 GBP
View
Retailer 9
-
£480 GBP
View
Price last confirmed 7 days ago
B+
Retailer 10
-
£534 GBP
View
B+
Retailer 11
-
£554 GBP
View
B
Retailer 12
-
£566 GBP
View
B+
Retailer 13
-
£569 GBP
View
B
Retailer 14
-
£585 GBP
View
Retailer 15
-
£585 GBP
View
Price last confirmed 34 days ago
B+
Retailer 16
-
£595 GBP
View
Most Expensive
B
MOH London
99DB9A894 · Nov 4
£885 GBP
View
16 more retailers have this diamond
Prices start from £335 GBPSave up to £551 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
0.51ct Cushion
£335 GBP