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Cushion|Natural|GIA

0.53ct E SI1 Cushion Natural Diamond

EX • E/SI1 • GIA 6551486569

Certificate GIA 6551486569

Diamond specifications and retailer prices

From £324 GBP
As of November 2, 2026
Save £111 GBP (25%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £435 GBP at Blue Nile · As of October 31, 2026
View at Blue Nile

About this 0.53ct natural cushion diamond

This 0.53ct 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 6551486569. Listed at 3 retailers as of October 31, 2026, with prices from £324 to £435, a £111 spread on the same certified stone. Blue Nile lists it at £435. 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

0.53
Carat
E
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6551486569
Dimensions4.62 × 4.52 × 2.99 mm
L/W Ratio1.02
Culet sizeNone
Key to symbols
Cloud, Crystal
Top View
4.62 mm4.52 mm0.53 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6551486569
Side View
Table 64.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 66.2%

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 2
Current: £435 GBP|Low: £287 GBP|High: £459 GBP|Avg: £375 GBP|-5.2%
Blue Nile
Retailer 2
Retailer 3
Retailer 4
November 3, 2026
Retailer 4£324 GBP
Retailer 3£335 GBP
Retailer 2£419 GBP
Blue Nile£435 GBP

39 data points across 4 retailers

3 retailers£324 GBP to £435 GBP

A
Cheapest Retailer
-
£324 GBP
A
Retailer 2
-
£419 GBP
View
Most Expensive
B+
Blue Nile
29380591 · Oct 31
£435 GBP
$582 USD
View
2 more retailers have this diamond
Prices start from £324 GBPSave up to £111 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
0.53ct Cushion
£324 GBP