Oman is now accepting Apostille also, An apostille is a special seal applied by an authority to certify that a document is a true copy of an original. Apostilles are available in countries, which signed the Hague Convention Abolishing the Requirement of Legalization of Foreign Public Documents, popularly known as The Hague Convention. This convention, created in 1961, replaces the time consuming chain certification process used so far, where you had to go to four different authorities to get a document certified.Oman have now came under Hague convention.
Attestation
There are two types of procedures, we can follow anyone from this to attest your certificate/Document, The procedures are

Type A

Home Department of concerned state
MEA Delhi
Oman Embassy in Delhi
Ministry of Foreign Affairs of Oman

Type B

Notary Maharashtra
Home Department of Maharashtra
MEA Delhi
Oman embassy in Delhi
Ministry of foreign affairs of Oman

Non Educational Documents

Notary Maharashtra
Home Department of Maharashtra
MEA Delhi
Oman Embassy in Delhi
Ministry of foreign affairs of Oman

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