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Cushion|Natural|GIA

0.50ct D SI2 Cushion Natural Diamond

GD • D/SI2 • GIA 1518717105

Certificate GIA 1518717105

Diamond specifications and retailer prices

From £283 GBP
$379 USD
As of October 29, 2026
Save £104 GBP (27%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £387 GBP at 77 Diamonds · As of October 31, 2026
View at 77 Diamonds

About this 0.5ct natural cushion diamond

This 0.5ct 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 1518717105. Listed at 5 retailers as of October 29, 2026, with prices from £283 to £387, a £104 spread on the same certified stone. 77 Diamonds lists it at £387. 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

0.50
Carat
D
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1518717105
Dimensions4.62 × 4.47 × 2.90 mm
L/W Ratio1.03
Culet sizeNone
Key to symbols
Twinning Wisp, Feather
Top View
4.62 mm4.47 mm0.50 ctD / SI2
OriginNatural
CutGood
PolishVery Good
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1518717105
Side View
Table 60.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 64.9%

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: Oct 29
Current: £387 GBP|Low: £247 GBP|High: £411 GBP|Avg: £329 GBP|-4.1%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 31, 2026
Retailer 3£283 GBP
Retailer 6£296 GBP
Retailer 5£302 GBP
Retailer 2£331 GBP
Retailer 4£339 GBP
77 Diamonds£387 GBP

40 data points across 6 retailers

5 retailers£283 GBP to £387 GBP

B+
Cheapest Retailer
-
£283 GBP
$379 USD
Final sale: no returns
B+
Retailer 2
-
£302 GBP
MYR 1,647 MYR
View
B+
Retailer 3
-
£331 GBP
$443 USD
View
B+
Retailer 4
-
£339 GBP
SGD 614 SGD
View
Most Expensive
B+
77 Diamonds
CUSCPSKVQGASN · Oct 31
£387 GBP
View
4 more retailers have this diamond
Prices start from £283 GBPSave up to £104 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
£283 GBP