Based on portal stave church Borgund - https://de.wikipedia.org/wiki/Stabkirche_Borgund#/media/File:Stave_church_Borgund_west_portal.jpg

Medium weight:
Metal: 925 silver
Weight: 25 g (0,88 oz)
Size: 45 x 40 mm (1,77 x 1,57 inch)
One-sided pendant

Heavy weight:
Metal: 925 silver
Weight: 43 g (1,5 oz)
Size: 45 x 40 mm (1,77 x 1,57 inch)
One-sided pendant

Chain not come with the pendant.

Fit chains:

1. Photo chain (medium weight) - https://berloga-workshop.com/catalog/67...

2. Medium sized chain - https://berloga-workshop.com/catalog/24-viking-ch...

3. Medium sized chain - https://berloga-workshop.com/catalog/456-viking-ch...

4. Medium sized chain - https://berloga-workshop.com/catalog/68-sterling-sil...

Black Sun Symbol - https://en.wikipedia.org/wiki/File:SchwarzeSonneArtifacts.JPG - decorative brooch found in Inzing, Innsbruck-Land, dated to ca. AD 400, from Hermann Wirth, Die heilige Urschrift der Menschheit, Leipzig 1936, BD. II, Bilderatlas, Tafel 42 (at the time kept in the Staatl. Museen Berlin.)