Siyahthuluth Calligraphic Arabic Font

SiahThuluth is not a Thuluth font but one that produces a black-practice effect for the Thuluth script, in the manner of the earlier SiahMashq. Install it and the text you write automatically takes the SiahMashq Thuluth form. A colour version, RanginThuluth, follows with a darker palette and a more retro feel, reminiscent of old inscriptions.