Chrome Diopside Heart Pendant Necklace in platinum over sterling silver, 20 in long, 5.11 gms, 16 perfectly hand matched pear shaped stones totally 2.15ctw, beautiful emerald green  colored round faceted prong set Russian diopside stones make up this heart pendant.  This gem has not been mined in Russia for since 2020 due to the severe weather conditions where the mine is located but it's that unique location that makes this gem stone so beautiful and desirable.