Already a scratch :(

[STALKER-SVK]

I use this tempered glass and I tested it with keys and knife and no scratches after that
Premium Real Tempered Glass Screen Protector for Nokia Microsoft Lumia 640 LTE | eBay

 

[dlalonde]

I use this tempered glass and I tested it with keys and knife and no scratches after that
Premium Real Tempered Glass Screen Protector for Nokia Microsoft Lumia 640 LTE | eBay

How does it look?