This site has limited support for your browser. We recommend switching to Edge, Chrome, Safari, or Firefox.

Our Spring Collection is Here!

We are monitoring the new tariff taxes on US consumers as the situation evolves. Please click to read more.

Cart 0

Congratulations! Your order qualifies for free shipping You are $100 away from free shipping.
No more products available for purchase

Products
Pair with
Add order notes
Subtotal Free
Shipping, taxes, and discount codes are calculated at checkout

Your Cart is Empty

Shop
Lab Grown Diamonds
Services
About
Sale

Shop the look

 

M & Co. Emerald Cut Lab Grown Diamond Bracelet

From $4,800.00
 

Marcus & Co. Edwardian Black Opal & Diamond Necklace

$35,000.00
 

M & Co. Oval Lab Grown Diamond Bracelet

From $4,800.00
 

Vintage Sterling Silver Moonstone Fringe Necklace

$750.00
 

M & Co. Oval Lab Grown Diamond Engagement Ring with Half Moon Accents

$3,200.00

Spring Collection

Shop Now
 

M & Co. Lab Grown Diamond Paper Clip Earrings

$530.00
 

Carved Tourmaline Strawberry Earrings

$5,200.00
 

Vintage Twisted White Jade Bangle Bracelet

$1,450.00
 

Vintage Yellow Gold Jade Drop Earrings

$375.00
 

Mid-Century Yellow Gold Jade Link Bracelet

$4,850.00
 

Vintage Sterling Silver Moonstone Fringe Necklace

$750.00
 

Edwardian Style Emerald & Diamond Cocktail Ring

$26,500.00
 

Marcus & Co. Edwardian Black Opal & Diamond Necklace

$35,000.00
M & Co. Lab Grown Diamond Round & Pear Drop Earrings

M & Co. Lab Grown Diamond Round & Pear Drop Earrings

$1,200.00
 

M & Co. Lab Grown Diamond Huggie Hoops

From $600.00
Hand-Carved Moonstone Moon Charm

Hand-Carved Moonstone Moon Charm

$750.00
M & Co. Lab Grown Diamond Heart & Pear Drop Earrings

M & Co. Lab Grown Diamond Heart & Pear Drop Earrings

$1,500.00

Bestsellers

Shop Now
 

M & Co. 4-Prong Martini Setting Diamond Stud Earrings

From $399.00
 

M & Co. White Gold Diamond Tennis Bracelet

From $850.00 $1,100.00
 
 Sale

M & Co. Yellow Gold Diamond Tennis Bracelet

From $850.00 $1,100.00
M & Co. Diamond Tennis Necklace
M & Co. Diamond Tennis Necklace
M & Co. Diamond Tennis Necklace
M & Co. Diamond Tennis Necklace

M & Co. Diamond Tennis Necklace

From $3,750.00
 

M & Co. Basket Setting Diamond Stud Earrings

From $425.00
M & Co. Bezel & Prong Diamond Pendant Necklace
M & Co. Bezel & Prong Diamond Pendant Necklace
M & Co. Bezel & Prong Diamond Pendant Necklace
M & Co. Bezel & Prong Diamond Pendant Necklace

M & Co. Bezel & Prong Diamond Pendant Necklace

From $1,100.00
M & Co. Diamond Station Bracelets

M & Co. Diamond Station Bracelets

From $350.00
 

M & Co. 3-Prong Martini Setting Diamond Stud Earrings

From $500.00
 

M & Co. Round Bezel Diamond Bracelet

From $1,600.00
M & Co. Diamond Station Necklace
M & Co. Diamond Station Necklace

M & Co. Diamond Station Necklace

$1,200.00
M & Co. Diamond Riviera Necklace
M & Co. Diamond Riviera Necklace
M & Co. Diamond Riviera Necklace

M & Co. Diamond Riviera Necklace

From $4,250.00
M & Co. Bezel Heart Shape Diamond Stud Earrings
M & Co. Bezel Heart Shape Diamond Stud Earrings
M & Co. Bezel Heart Shape Diamond Stud Earrings

M & Co. Bezel Heart Shape Diamond Stud Earrings

From $550.00
 

M & Co. Bezel Round Diamond Stud Earrings

From $575.00
 

M & Co. Bezel Emerald Cut Diamond Stud Earrings

From $550.00
 

M & Co. Mixed Cut Diamond Bezel Bracelet

From $5,500.00
3, 5, 8, 10, and 15 cttw bracelets
 

M & Co. Tennis Bracelet

From $1,650.00
 

M & Co. Asscher Cut Bezel Half Eternity Band Ring

From $1,200.00
 

M & Co. Oval Bezel Bracelet

$5,500.00
 

M & Co. 2.5-3 CTTW Round Solitaire Engagement Baguette Accents Ring

$2,150.00
 

M & Co. Vivid Cushion Cut Red Garnet Ring

From $2,750.00

Visit Us

2418 Fillmore Street
San Francisco, CA 94115

Tues - Sat, 12pm - 5pm

No Appointment Needed

Directions