| black onyx: 3.5 g, black lip shell (scientific name: pinctada margaritifera) 3.1 g, mother of pearl shell (scientific name: nacre) 3.9 g pearl (scientific name: pinctada fucata) 2.18 g |
| black onyx: 3.5 g, black lip shell (scientific name: pinctada margaritifera) 3.1 g, mother of pearl shell (scientific name: nacre) 3.9 g pearl (scientific name: pinctada fucata) 2.18 g |