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JJewelry Professional Knowledge

Views: 0 Author: Amy Publish Time: 2025-08-11 Origin: Site

A Concise Guide to Jewelry: Professional Knowledge

Jewelry materials are primarily divided into precious metals, gemstones, and organic materials, each with distinct characteristics and value drivers.

Category	Key Examples	Core Features
Precious Metals	Gold (Au), Silver (Ag), Platinum (Pt), Palladium (Pd)	High ductility, resistance to corrosion (except silver’s tarnish), and intrinsic value tied to purity.
Gemstones	Diamond, Ruby, Sapphire, Emerald, Colored Topaz	Valued by the "4Cs" (Cut, Color, Clarity, Carat Weight) for diamonds; color intensity and origin matter for colored stones.
Organic Materials	Pearl, Coral, Amber, Ivory (banned in most regions)	Formed by living organisms; pearls rely on luster, shape, and surface quality.

Purity is indicated by hallmarks or numerical stamps, directly affecting value:

Gold: Measured in karats (K). 24K = 99.9% pure gold (soft, rarely used for jewelry); 18K (75% pure), 14K (58.3% pure) are common for durability.
Silver: Marked as "925" (Sterling Silver, 92.5% pure silver + 7.5% alloy) to prevent tarnishing and increase hardness.
Platinum: Stamped "Pt950" (95% pure platinum) or "Pt900" (90% pure); denser and more scratch-resistant than gold.

Cut: Determines a diamond’s brilliance (light reflection). Grades range from "Excellent" (ideal light performance) to "Poor" (wastes light).
Color: For white diamonds, graded from "D" (colorless, most valuable) to "Z" (light yellow). Colored diamonds (e.g., pink, blue) are valued for intense, uniform hues.
Clarity: Measures internal flaws ("inclusions") and surface blemishes. Grades: FL (Flawless, no visible flaws under 10x magnification) → SI (Slightly Included) → I (Included, visible to the naked eye).
Carat Weight: 1 carat (ct) = 0.2 grams. Value rises exponentially with carat (a 2ct diamond is far pricier than two 1ct diamonds of similar quality).

Techniques impact a piece’s aesthetics, durability, and cost:

Casting: Melting metal and pouring it into a mold (used for mass-produced, complex designs like engagement rings).
Filigree: Twisting thin metal wires into delicate patterns (traditional craft, seen in antique or artisanal jewelry).
Enameling: Fusing colored glass powder onto metal (adds vivid color; "cloisonné" is a high-end enameling technique).
Setting: Securing gemstones to metal. Common types:

Prong Setting: 4-6 metal prongs hold the gem (maximizes light exposure for diamonds).
Bezel Setting: A metal rim wraps around the gem (offers better protection, popular for daily-wear jewelry).
Pavé Setting: Tiny gemstones are set closely together (creates a "sparkling surface" effect).

Precious Metals: Avoid contact with chemicals (perfume, lotion, chlorine). Clean silver with a specialized silver polish; gold/platinum can be washed with warm soapy water.
Gemstones: Diamonds are hard (Mohs scale 10) but can chip if hit; avoid wearing diamond jewelry during heavy work. Soft stones (e.g., emerald, pearl, Mohs scale 3-7) need gentle cleaning with a soft cloth—never use ultrasonic cleaners.
Storage: Keep jewelry separate in soft pouches or a divided box to prevent scratching. Pearls should be stored away from direct sunlight to avoid drying out.