QUAHOG PEARL
Species: Calcareous Concretion
Pearl Type: Quahog (Natural) Mollusk: Mercenaria Mercenaria or Venus Mercenaria Mohs Hardness: 2.5 to 4.5 out of 10 Color: Purple, lavender, white, beige, brown and black RI: 1.530 to 1.685 Birefringence: 0.155 (Birefringence blink technique) SR/DR/AGG: AGG Spectrum: Not diagnostic Fluorescence: Variable SG: 2.61 - 2.85 Routine Treatments: None Additional Enhancements: Polishing, dyeing |