Jewel service

Are there any costs associated with the resize of jewelry and can I wait for this or do I need to schedule an appointment?

What are the possibilities for engraving a jewelry?

Are there costs associated with engraving jewelry and can I wait for this or do I have to schedule an appointment?

Are there any charges for cleaning jewelry and do I need to schedule an appointment for this?

How long do I have a warranty on my jewel?

I want to have my jewelery insured, does GASSAN offer this?

What are the cost of valuing jewelry and can I wait for this or do I need to schedule an appointment?

I would like to buy a pre-owned jewel and the the jewel has been purchased at GASSAN. Can I check with GASSAN whether the jewel was actually purchased here?