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"Carpe Diem" Rose Cut Diamond Stackable Ring
Starting from $2,975 -
"One of a Kind" Poesy Stackable Diamond Ring
Starting from $725 -
Slim "Viv" 18K Rose Gold Locket Necklace
Starting from $3,050 -
"I Love You More" Sapphire Poesy Stackable Ring
Starting from $1,540 -
"Time is Precious" Open Sundial 18K Gold Necklace with Diamond Tip
Starting from $4,250 -
Mother of Pearl Classic Heart 18K Gold Necklace
Starting from $1,760 -
"Points North" 18K Yellow Gold Cuff
Starting from $9,850 -
"Warrior" Pavé Diamond Stackable Ring
Starting from $1,300 -
Mini "Happiness" Sun Necklace with Mother of Pearl, Sapphires, and Diamonds
Starting from $2,275 -
Slim Pinstripe "Eve" 18K Gold Locket Necklace
Starting from $3,750 -
"Elle" Stone Slim 18K Rose Gold Locket Necklace
Starting from $3,850 -
Petite "Anna" 18K Gold Engraved Locket Necklace
Starting from $3,265 -
"Strength" Arrow and Moon Poesy Stackable Ring
Starting from $1,220 -
Mini "Strength" Apollo Necklace with Diamonds
Starting from $1,535 -
"Breathe" Leaf Poesy Slim 18K Gold Stackable Ring
Starting from $1,075 -
White "Warrior" Poesy Stackable Ring
Starting from $525 -
"Adventure" Compass Necklace with Moonstone and Diamonds
Starting from $6,750
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
“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.
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.
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.
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.”
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.

