60th Wedding Anniversary card

I loved the colours in the latest CAS Colours and Sketches challenge (#248) - Emerald Envy, Tranquil Tide and  Metallic Silver - and they provided the basis for my thinking about a 60th wedding anniversary card for an uncle and aunt. (His brother and wife have the same anniversary this year, so I'll be making another one soon!) The metallic silver went nicely, I thought, with the 'diamond' anniversary, but I added a few diamonds (well, diamantes, but they still look good!) to keep the card appropriate for the celebration.
Here's the card:

Made Using:
Stampin' Up Products: Emerald Envy and Tranquil Tide ink and paper, Sky is the Limit stampset (for sentiment)
francheville diamantes
Kaisercraft Numbers Decorative Dies, Flutter clear stamps
Silver craft paper