Global Gemology & Appraisals - Premier Jewelry Valuation Services
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YELLOW GOLD

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Mid Century Era vintage 14K gold & diamond brooch
Mid Century Era yellow gold and diamond brooch, with textured finish

Gold is a precious metal that has been cherished for thousands of years, with the first known gold jewelry dating back to 4000 B.C.

​Pure gold has a melting point of 1948˚ Fahrenheit.

Pure gold is very malleable, and is often alloyed with other metals to strengthen it.

Karats are the units used to measure the purity of gold.

24K Gold = Pure Gold
22K Gold = 91.7% Pure
18K Gold = 75% Pure
14K Gold = 58.5% Pure
10K Gold = 41.7% Pure
​9K Gold = 37.5% Pure
  • 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