Diamond chart – Color & clarity
Left > quality & price, Right < quality & price.
In Egypt the ones widely adopted and of good quality and matching price are the H VVS1
A matter of taste, not price.
Be careful when you buy from shops that are not famous, you should always take the single certificate diamonds and verify it with a trusted vendor
But if you are buying from a trusted vendor that you know will be around for a while, than you can buy one of those tray diamonds with a consolidated certificate and just take the vendor issued certificate.
Note: Abroad from Egypt you will never cell anything less than 1 carat with a certificate.
I hope I helped even if a little, enjoy.