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Cushion|Natural|GIA

0.51ct G SI1 Cushion Natural Diamond

ID • G/SI1 • GIA 1563633023

Certificate GIA 1563633023

Diamond specifications and retailer prices

From £335 GBP
As of November 6, 2026
Save £253 GBP (43%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £588 GBP at Wholesale Diamonds Direct · As of November 6, 2026
View at Wholesale Diamonds Direct

About this 0.51ct natural cushion diamond

This 0.51ct natural cushion sits in the half to three-quarter carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1563633023. Listed at 13 retailers as of November 6, 2026, with prices from £335 to £588, a £253 spread on the same certified stone. Wholesale Diamonds Direct lists it at £588. 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

0.51
Carat
G
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1563633023
Dimensions5.71 × 4.22 × 2.82 mm
L/W Ratio1.35
Top View
5.71 mm4.22 mm0.51 ctG / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1563633023
Side View
Table 66.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 66.8%

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: £575 GBP|Low: £302 GBP|High: £588 GBP|Avg: £459 GBP
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Wholesale Diamonds Direct
November 6, 2026
Retailer 4£335 GBP
Retailer 11£387 GBP
Retailer 8£413 GBP
Retailer 5£415 GBP
Retailer 3£417 GBP
Retailer 9£506 GBP
Retailer 6£513 GBP
Retailer 10£564 GBP
Retailer 2£572 GBP
Retailer 7£572 GBP
Retailer 1£575 GBP
Wholesale Diamonds Direct£588 GBP

5 data points across 12 retailers

13 retailers£335 GBP to £588 GBP

A
Cheapest Retailer
-
£335 GBP
B+
Retailer 2
-
£387 GBP
View
Final sale: no returns
A
Retailer 3
-
£401 GBP
View
B+
Retailer 4
-
£413 GBP
View
B+
Retailer 5
-
£415 GBP
View
B+
Retailer 6
-
£417 GBP
View
B+
Retailer 7
-
£506 GBP
View
B+
Retailer 8
-
£513 GBP
View
B+
Retailer 9
-
£564 GBP
View
B+
Retailer 10
-
£572 GBP
View
B+
Retailer 11
-
£572 GBP
View
B+
Retailer 12
-
£575 GBP
View
Most Expensive
B+
Wholesale Diamonds Direct
681960494 · Nov 6
£588 GBP
$787 USD
View
12 more retailers have this diamond
Prices start from £335 GBPSave up to £253 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