Better pictures may not help much. If it is amber, it will pass all three of these tests:
- Rub it vigorously on a woollen item (sweater, sock, blanket or whatever). Amber will develop enough static charge to attract small pieces of torn-up paper tissue.
- Swab an area of it with a cotton bud dipped in vodka. Amber will not become sticky or tacky, easily judged by whether a dry paper tissue then adheres to it.
- Heat the tip of a needle using a cigarette lighter and touch it on the specimen. Amber will soften and yield to the needle, releasing a resinous pine-like odour.