Feem coob ntawm cov hlaws dej tsis qab ntsev los ntawm Suav teb, Cov hlaws suav txog 80% ntawm lub ntiaj teb' s ntau lawm. Txhua xyoo, Pearls Tuam Tshoj tsim lub Tuam Tshoj (Thoob Ntiaj Teb) Hlaws Pob Zeb. Cov niam lub hlaws ntawm cov hlaws tsis qab ntsev yog Marsella martensii lossis dej phwj. Lub roundness Hlaws thiab luster ntawm cov hlaws dej tsis qab ntsev yog qhov tseem ceeb cuam tshuam rau lawv cov nqi.
Cov nplaig dej hiav txwv zoo zoo nkauj heev rau Ocaiya hlaws, tab sis lawv cov nqi tsuas yog 1/5 ntawm Okaiya hlaws. Dab tsi yuav tsum muaj kev ntsuas yog tias cov hlaws tsis muaj dej yog feem ntau me me thiab tsis zoo ib yam. Thaum strung mus rau hauv cov saw hlau, Pearls cov nyhuv nyhuv yog qhov tsis zoo. Yog lawm, hlaws tab sis tom qab hnyav tus nqi, hlaws dej tsis qab ntsev kuj yog khoom plig zoo meej.
