1.78ct Block D Tanzanite

A magnificent 1.78-carat Block D tanzanite displaying the coveted deep blue-violet coloration that defines this rare gemstone. Block D material represents the pinnacle of tanzanite quality, characterised by exceptional transparency and saturated hues that command premium valuations. This specimen exhibits the fine optical clarity and colour consistency sought by discerning collectors and master craftspeople. Ideal for bespoke high-jewellery pieces or as a significant addition to a serious gemstone collection.