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Cushion|Natural|GIA

0.51ct D SI2 Cushion Natural Diamond

GD • D/SI2 • GIA 2514947193

Certificate GIA 2514947193

Diamond specifications and retailer prices

From £310 GBP
$415 USD
As of October 31, 2026
Save £174 GBP (36%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £484 GBP at Ritani · As of October 31, 2026
View at Ritani

About this 0.51ct natural cushion diamond

This 0.51ct natural cushion sits in the half to three-quarter carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 2514947193. Listed at 4 retailers as of October 31, 2026, with prices from £310 to £484, a £174 spread on the same certified stone. Ritani lists it at £484. 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
D
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2514947193
Dimensions4.46 × 4.39 × 2.98 mm
L/W Ratio1.02
Top View
4.46 mm4.39 mm0.51 ctD / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2514947193
Side View
Table 62.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 67.9%

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: Oct 31
Current: £426 GBP|Low: £270 GBP|High: £489 GBP|Avg: £389 GBP|-3.9%
Retailer 1
Retailer 2
Retailer 3
Ritani
October 31, 2026
Retailer 2£310 GBP
Retailer 3£332 GBP
Retailer 1£426 GBP
Ritani£484 GBP

41 data points across 4 retailers

4 retailers£310 GBP to £484 GBP

B+
Cheapest Retailer
-
£310 GBP
$415 USD
Final sale: no returns
A
Retailer 2
-
£332 GBP
MYR 1,814 MYR
View
B+
Retailer 3
-
£426 GBP
View
Most Expensive
B+
Ritani
D-58836RBJW9 · Oct 31
£484 GBP
$648 USD
View
3 more retailers have this diamond
Prices start from £310 GBPSave up to £174 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
£310 GBP