The latest phone from Gresso’s Avantgarde collection is the White Diamonds edition. The phone is based on the Gresso Avantgarde and shares all the same features as it. Each of the twenty three keys of the phone are made of yellow gold and each one features a single diamond encrusted into each key. The Gresso Avantgarde Collection White Diamonds is made of African Blackwood and gold and only two hundred will be made.