Is this a sapphire inclusion?

[Hospatogi]

Hi All,
I just received a pair of sapphires. I love their deep color and scintillation. However in direct sunlight I see a white milky cloud in the sapphire. I can see it in indoor lighting too but I have to really look closely since it blends with the facets. What is this? Will this impact the durability of the stone?

 

[chrono]

What does it look like when louped? I'm guessing those are microscopic inclusions that are grouped together so as to appear cloudy, which shows up under strong lighting.

 

[ephsea]

Many sapphires have what's known as "silk", or tiny inclusions that can give the gem a cloudy or sleepy look. Some consider it desirable up to a point, some want clear gems. It's a personal choice - you'll have to decide whether or not you like the look. It will not impact durability in any way.