It seems you're a bit concerned that you only received an international medal, a certificate of achievement, a gift certificate, and a marksheet for securing the 2nd position in the International Silver Zone Olympiad. Let's clarify what you typically receive for this achievement.

According to SilverZone's official information, students who achieve the 2nd Rank at the International Level are indeed awarded an International Silver Medal and a Certificate of Outstanding Performance .

The fact that you received an "International Medal" aligns with this. It's highly likely that the medal you received is the International Silver Medal that is given to the 2nd rank holders at the international level.

You also mentioned receiving a "Certificate of Achievement." This seems to correspond with the "Certificate of Outstanding Performance" mentioned for the 2nd rank. The name might vary slightly, but the recognition is there.

The inclusion of a "gift certificate" is also common in Olympiads as an additional form of recognition.

Therefore, based on the standard awards for the International Silver Zone Olympiad, what you have received is consistent with the recognition for achieving the 2nd position at the international level. You have received the medal and the certificate specifically designated for this rank, along with an additional gift certificate and your marksheet which details your performance. You haven't missed out on any major award as per the typical structure for international rank holders in SilverZone Olympiads. Congratulations on your achievement!