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18K Gold Fine Jewelry

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  • Special Edition "Enchanted Garden" Pear Necklace

    $14,500

    Call for Availability

  • 18K Gold Fine Jewelry

    Why 18K Gold?

    Simply More Gold.

    We use only 18k gold. Quite simply to give you more gold.

    18k is 75% pure gold known for a higher level of purity and value. It delivers approximately 29% more gold than an equivalent style in 14k.

    OUR QUALITY

  • 18K Gold Fine Jewelry

    Why 18K Gold?

    Simply More Gold.

    We use only 18k gold. Quite simply to give you more gold.

    18k is 75% pure gold known for a higher level of purity and value. It delivers approximately 29% more gold than an equivalent style in 14k.

    OUR QUALITY

  • 17 inch Design Your Own Steel Chain Necklace with 1 Charm Station Slim 18K Gold Heart Locket with Steel Chain Necklace and The "Jane" Locket on Black Spinel Necklace
    new
  • 18K Gold Fine Jewelry

    Why 18K Gold?

    Simply More Gold.

    We use only 18k gold. Quite simply to give you more gold.

    18k is 75% pure gold known for a higher level of purity and value. It delivers approximately 29% more gold than an equivalent style in 14k.

    OUR QUALITY

  • Slim 18K Gold Heart Locket with Steel Chain Necklace Slim 18K Gold Heart Locket with Steel Chain Necklace and The "Jane" Locket on Black Spinel Necklace
    new
  • Slim Britt Gold Locket on Green Sapphire Necklace Slim Britt Gold Locket on Green Sapphire Necklace
    new
  • Fancy Cut Edit Tennis Bracelet Fancy Cut Edit Tennis Bracelet
    new

    Fancy Cut Edit Tennis Bracelet

    $15,650

    Will Ship in 72 Hours

  • "Rings of Saturn" Earrings

    Starting from $1,290
  • Petite "Anna" Locket Necklace

    Starting from $325
  • Slim "Britt" Locket Necklace Slim "Britt" Locket Necklace
    best seller

    Slim "Britt" Locket Necklace

    Starting from $355
  • 18K Gold Fine Jewelry

    SHOPPING FOR A GIFT?

    The right message can make your gift even more meaningful. We are happy to wrap our signature box with a marigold ribbon and include a personalized gift note from you. Just select "is this a gift?" at checkout and type in the perfect message.

  • Special Edition Garnet Drop Locket with Diamonds

    $11,215

    Will Ship in 72 Hours

  • Special Edition "Blue Lagoon" Aqua Drop Earrings

    $11,385

    Call for Availability

  • 18K Gold Fine Jewelry

    SHOPPING FOR A GIFT?

    The right message can make your gift even more meaningful. We are happy to wrap our signature box with a marigold ribbon and include a personalized gift note from you. Just select "is this a gift?" at checkout and type in the perfect message.

  • 18K Gold Fine Jewelry

    SHOPPING FOR A GIFT?

    The right message can make your gift even more meaningful. We are happy to wrap our signature box with a marigold ribbon and include a personalized gift note from you. Just select "is this a gift?" at checkout and type in the perfect message.

  • "Audrey" Link Charm Necklace in 18K Yellow Gold "Audrey" Link Charm Necklace in 18K Yellow Gold, with 5 charms
    best seller
  • Fancy Cut Diamond Tennis Bracelet

    Starting from $35,515
  • Slim Viv 18K Yellow Gold Locket Necklace with Carnelian Slim Viv 18K Yellow Gold Locket Necklace with Carnelian
    new
  • Lemons to Lemonade Necklace with Yellow Sapphires Lemons to Lemonade Necklace with Yellow Sapphires
    new
  • Silver Lining Two-Tone Stackable Ring Two-Tone Stackable Rings
    new
  • I Love You More Two-Tone Sapphire Stackable Ring Two-Tone Stackable Rings
    new
  • Never Fear Snake Two-Tone Stackable Ring Two-Tone Stackable Rings
    new
  • True North Two-Tone Stackable Ring Two-Tone Stackable Rings
    new
  • Carpe Diem Medallion Necklace in 18K Yellow Gold Carpe Diem Medallion and Necklaces
    new
  • Mini Carpe Diem Charm Necklace in 18K Yellow Gold Carpe Diem Medallion and Necklaces
    new
  • Carpe Diem Medallion in 18K Yellow Gold with Sterling Silver Ball Chain Carpe Diem Medallion and Necklaces
    new
  • Constellation Necklace with Mother of Pearl and Diamonds Constellation Necklace with Mother of Pearl and Diamonds with Points of Light Necklace
    new
  • Points North Toggle Necklace in 18K Yellow Gold Points North Toggle Necklace, Lemons to Lemonade Necklace, Viv Locket, in 18K Gold
    new
  • Points North Toggle Compass Intaglio Necklace Points North Toggle Compass Intaglio Necklace and Chain
    new
  • Points North Toggle Moonstone Locket Necklace Points North Toggle Moonstone Locket Necklace, Lemons to Lemonade Necklace, Green Sapphire DYO Luck Necklace
    new
  • Eden Locket Necklace Eden Locket Necklace
    new

    "Eden" Locket Necklace

    Starting from $10,860
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We use 18k Gold in all of our Fine Jewelry Collections quite simply to give you more gold. 18K gold is 75% pure gold and delivers almost 29% more gold that an equivalent style in 14K. Since we build our jewelry to be part of your family for generations, we believe giving you this higher level of gold purity is the right one for our designs.%expanded-desktop%%expanded-mobile%



The 18k gold necklace is a foundation of our jewelry collections. There are many opportunities to find gold charms or gold lockets for women throughout our collection that allow you to create your own pendant necklaces. Add these pieces to one of our 18k gold chain necklaces and the finished style can be short or long – it is your choice - with the chains often adjustable so you can create varied layered looks. Our “design your own chains” allow you to create necklaces with two or three pendants, and the customizable stations on those chains allow you to mix and change the pendants in seconds.



And finally, to add a fun twist to designing your own necklace, we reinvented 18k gold rings with our Poesy Ring Collection. They are rings inspired by 500 year pieces that bore inscriptions of friendship and romance. We engraved our own inscriptions of love, empowerment and friendship to rings that can be added to chains to create a unique gold necklace.



Our gold charms are also ideal to create classic, but contemporary, charm bracelets. We have a variety of 18k gold bracelet styles to build the charm bracelet that will become a signature style in your jewelry box. Choose from our chains in a range of sizes and scales, select from our gold charms for bracelets, and you will have the elements needed to build your version of this iconic jewelry piece.

18K Gold Fine Jewelry FAQs

What does "18K gold" mean and how does it differ from other karats?

“18K” refers to the purity of gold used in fine jewelry. It means 18 parts pure gold to 6 parts alloy, or 75% pure gold overall. This balance delivers the best of both worlds: the luxurious look of a piece made with high gold content, but with the strength needed for everyday wear. Compared to 10K or 14K, Monica Rich Kosann’s 18K gold jewelry offers a richer color and an heirloom quality.

Is Monica Rich Kosann’s 18K gold solid or plated?

Every Monica Rich Kosann 18K gold piece is crafted from solid gold, never gold plated. Plated jewelry only carries a thin outer layer of gold, while our fine jewelry is made entirely of solid 18K gold throughout, ensuring longevity, value, and a radiant finish that will not fade with wear. 

How should I care for and clean my 18K gold jewelry?

To preserve your 18K gold jewelry, gently clean it with a soft, lint-free cloth after wear to remove oils or residue. Avoid abrasive polishes or harsh chemicals, as they may dull the metal’s surface. For a deeper clean, mild soap and warm water can be used, but be sure to pat dry completely. Store each piece separately in a soft pouch or lined jewelry box to prevent scratches.

Can I wear my 18K gold jewelry every day?

Yes! Monica Rich Kosann’s 18K gold jewelry is made to be lived in, not locked away. Its 75% pure gold composition, strengthened by alloy metals, gives it both radiance and durability for daily wear. These are pieces designed for “today’s moments and the ones yet to come.”

How do I verify the authenticity of 18K gold?

Monica RIch Kosann’s dedication to “more gold” ensures that your jewelry retains its intrinsic and sentimental value over time. Purchasing directly from MonicaRichKosann.com guarantees authenticity, heritage craftsmanship, and the timeless quality that defines every piece in our 18K gold collection.