KGK One
Support

Care guide.

Looking after fine jewelry, diamonds and colored stones.

Daily wear

Store pieces individually — soft pouches or lined boxes prevent harder stones (diamond, sapphire, ruby) from scratching softer ones (emerald, opal, pearl). Avoid contact with chlorine, perfume and lotions.

Cleaning

Warm water with a drop of mild soap and a soft toothbrush refreshes most pieces. Skip ultrasonic baths for treated emeralds, pearls and opals — they can damage the stone or its treatment.

Service

We recommend a professional inspection once a year — prong condition, re-tipping if needed, and re-polishing. Repair work is covered under the KGK Manufacturing desk.

KGK One reception with the KGK ONE wordmark on the wall

All Your Needs, Handled by One Trusted Partner.

The most successful businesses are built on a foundation of reliable supply, institutional expertise, and a partner who understands every part of the trade as well as you do.

KGK One is built to deliver exactly that. One fully integrated partner across every category your business needs, backed by 120 years of expertise and operations across 15 countries. The supply chain infrastructure your business has been looking for.

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Dedicated Sales Team

Your own trade specialist, ready when you need them.

Global Distribution

A global network built to deliver wherever your business operates.

Traceability & Ethics

Responsible sourcing and full transparency across every category.