K24
99.9%
Pure Gold
Exquisite color but extremely soft. Not recommended for daily wear jewelry.
The Differences Between K5, K10, and K18
A Guide to Choosing Your Perfect Gold
Gold Alloy Composition
The "K" number indicates the proportion of pure gold in the alloy. Higher karat means more gold, lower means more strengthening metals.
GOLD PLATED
GOLD FILLED
K14
SOLID GOLD
K5 · K10 · K18
Gold Content Percentage
About Our Gold Standards
Our jewelry follows Japanese gold purity standards. What we label as K10 (41.6% gold) may be referred to as K9 or 10K in other regions. Rest assured, the quality and gold content remain exactly the same—only the naming convention differs by country.
K18
75%
Gold / 25% Alloys
The perfect harmony of beauty and durability. Ideal for fine jewelry and engagement rings.
K10
41.6%
Gold / 58.4% Alloys
Highly durable and affordable. Perfect for everyday casual wear with excellent resistance.
K5
20.8%
Gold / 79.2% Alloys
Entry-level gold with maximum durability. Most affordable option with gentle gold hue.
About Gold
Why Gold is Precious
From one ton of ore, only 3-5g of gold is extracted. All gold ever mined would fill just 3.8 Olympic pools—a testament to its rarity and eternal value.
Why We Use Alloys
Pure gold is remarkably soft—1g can stretch 3000m. For lasting jewelry, we blend it with silver and copper, creating beautiful, durable pieces.
Maintenance
Alloys in K18, K10, and K5 may naturally darken over time. With proper care, your jewelry will maintain its radiance for generations.
Daily Care
Gently wipe with a soft cloth after wearing. Store in an airtight bag or box to preserve its luster.
Regular Cleaning
K10 requires more frequent care than K18 due to higher alloy content. Clean when tarnish appears.
Professional Care
Ultrasonic cleaners work beautifully. For gemstone pieces, always verify compatibility first.
A Gentle Reminder About Mercury
Gold's beauty is eternal, but it requires thoughtful care. When gold encounters mercury—found in some cosmetics, thermometers, or medications—a natural reaction called amalgamation occurs, creating a permanent change in the metal's structure.
To preserve your jewelry's timeless beauty, we kindly recommend being mindful of mercury-containing products. This simple awareness ensures your treasured pieces remain as radiant as the day you first wore them.