Global Gemology & Appraisals - Premier Jewelry Valuation Services
  • HOME
  • QUALIFICATIONS
  • SERVICES
    • APPRAISALS
    • APPRAISAL REVIEW
    • VIP APPRAISAL CONCIERGE
    • EXPERT WITNESS & LITIGATION SUPPORT
    • SELL YOUR JEWELRY
  • CLIENTELE
    • ATTORNEYS
    • ESTATE PLANNING PROFESSIONALS
    • VIP & CELEBRITY CLIENTELE
    • LAW ENFORCEMENT AGENCIES
    • INSURANCE COMPANIES
    • INDEPENDENT JEWELERS
  • SHOP
  • GEMOLOGY
    • GEM ENCYCLOPEDIA
    • THE ART OF GEMOLOGY

aNDALUSITE

Picture
Andalusite
Photo courtesy of High Life Living Luxury
Species:  Andalusite
Mohs Hardness:  6.5 to 7.5 out of 10
Color:  Black, white, gray, green, yellow, pink, brown and orange

RI:  1.634 to 1.643
Birefringence:  +/- 0.005
SR/DR/AGG:  DR
Clarity Type:  Type II
Pleochroism:  Strong, colors vary depending on gem's bodycolor
Spectrum:  Not diagnostic

Fluorescence:  Variable, not diagnostic
SG:  3.17

andalusite Facts

Picture

Andalusite occurs in many different colors.

Andalusite displays strong pleochroism which is often visible with the naked eye.

  • HOME
  • QUALIFICATIONS
  • SERVICES
    • APPRAISALS
    • APPRAISAL REVIEW
    • VIP APPRAISAL CONCIERGE
    • EXPERT WITNESS & LITIGATION SUPPORT
    • SELL YOUR JEWELRY
  • CLIENTELE
    • ATTORNEYS
    • ESTATE PLANNING PROFESSIONALS
    • VIP & CELEBRITY CLIENTELE
    • LAW ENFORCEMENT AGENCIES
    • INSURANCE COMPANIES
    • INDEPENDENT JEWELERS
  • SHOP
  • GEMOLOGY
    • GEM ENCYCLOPEDIA
    • THE ART OF GEMOLOGY