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Cushion|Natural|GIA

0.50ct J SI1 Cushion Natural Diamond

VG • J/SI1 • GIA 6187301022

Certificate GIA 6187301022

Diamond specifications and retailer prices

From £355 GBP
As of November 1, 2026
Save £316 GBP (47%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £671 GBP at 77 Diamonds · As of November 5, 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 J colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6187301022. Listed at 3 retailers as of November 1, 2026, with prices from £355 to £671, a £316 spread on the same certified stone. 77 Diamonds lists it at £671. 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
J
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6187301022
Dimensions4.55 × 4.45 × 3.20 mm
L/W Ratio1.02
Culet sizeNone
Top View
4.55 mm4.45 mm0.50 ctJ / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateGIA 6187301022
Side View
Table 61.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 71.8%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £671 GBP|Low: £338 GBP|High: £677 GBP|Avg: £519 GBP|+5.2%
77 Diamonds
Retailer 2
Retailer 3
November 5, 2026
Retailer 3£355 GBP
Retailer 2£557 GBP
77 Diamonds£671 GBP

41 data points across 3 retailers

3 retailers£355 GBP to £671 GBP

B+
Cheapest Retailer
-
£355 GBP
B
Retailer 2
-
£557 GBP
View
Most Expensive
B
77 Diamonds
CUSZ2JDUJBPN · Nov 5
£671 GBP
View
2 more retailers have this diamond
Prices start from £355 GBPSave up to £316 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
£355 GBP