Amazon! There's more than 2 shapes, but they're very similar.
​
Umbra Prisma Wall Décor – Modern Geometric Wall Sculptures, Decorate your Wall With Modern Metallic Wire Shapes, Table top Décor, Ceiling Décor, Set of 6, Copper https://www.amazon.com/dp/B010XGBLEE/ref=cm_sw_r_cp_api_1H2HBb5KJPN5R
I think this style might work well with your minimalist/traditional style.
You can get them on Amazon Umbra Prisma Wall Decor (Set of 6) – Metal Wall Art/Modern Wall Decor - Converts from Table Top to Hanging Decor, Copper https://www.amazon.ca/dp/B010XGBLEE/ref=cm_sw_r_cp_apa_i_D-FYCb6ZSQHDG