Hartmanns Fine Jewellery, based in Copenhagen, specializes in luxury jewelry, particularly diamonds and unique gemstones like Greenland rubies. They offer personalized services, including bespoke engagement rings and diamond consultations. Their target audience is high-end consumers seeking exclusive jewelry experiences. The unique selling proposition (USP) is their focus on personalized customer experiences, combined with a curated selection of rare gemstones, such as Greenland rubies, which sets them apart in the luxury jewelry market[2][5].