Adorable Serpentine Yak (Highland Cow) | Opt WGreen Serpentine Material Description Green Serpentine is a naturally occurring metamorphic stone known for its rich, earthy green tones that range from soft sage to deep forest hues. Its surface often displays a smooth, waxy to slightly silky luster, with subtle marbling, veining, or mottled patterns that give each piece a unique, organic character. This material can include variations of lighter and darker greens, sometimes accented by black, cream,