• Anniversary
  • Eternity Rings
  • Diamond Bands
  • Three Stone Rings
  • Five Stone Rings
  • Ruby Rings
  • Blue Sapphire Rings
  • Pink Sapphire Rings
  • Diamond Earrings
  • Diamond Pendants
  • Diamond Bracelets
• Engagement
  • Three Stone Rings
  • Eternity Rings
  • Semi-Mounts
  • Mens's Rings
  • Diamond Solitaires
  • Ruby Rings
  • Sapphire Rings
  • Design Your Own Ring
• Wedding
  • Platinum Wedding Bands
  • Gold Wedding Bands
  • Titanium Wedding Bands
  • Matching Band Sets
  • Diamond Bands
  • Eternity Bands
  • Men's Designer Rings
  • Design Your Own Ring
• Gifts
  • Gifts for Her
  • Gifts for Him
• Services
  • Test Drive Your Ring™
  • Custom Design
  • Inspection & Cleaning
  • Warranty & Repairs
  • Ring Resize
  • Return Authorization
• Education Center
  • How Our Jewelry is Made
  • Diamond Basic 4C's
  • Beyond Diamond 4C's
  • The "Ideal" Cut Diamond
  • Diamond Grading Systems
  • About Rubies
  • About Sapphires
  • White Gold or Platinum?
  • Platinum Care
  • Wedding Planning

Explore the Difference

Unlike most Internet jewelers, at Diamond Design Co. each piece of jewelry is carefully designed and crafted by our in-house jewelers.

Need it wider, smaller, more stones, less stones, a different metal or precious stone, NOT A PROBLEM. Our jewelry is made-to-order-, "made by us for you".

Fine quality jewelry should come with fine quality service

Exclusive Platinum Collection

Pure, Rare, & Eternal The world's most famous designers have created their masterpieces in platinum. Today, platinum again enchants a new generation. Classic and timeless, it is one of earth's rarest gifts. The ultimate gift of love, fine quality platinum and diamond jewelry. Unmatched in beauty, powerful in mythical lore, the diamond completes the priceless gifts of love. Visit our video gallery to learn more about how our jewelry is made. And see our photo gallery for custom ideas.

.75tcw Platinum 5 Stone Shared Prong Anniversary Ring $1,707.00 1.20tcw Platinum Diamond & Ruby 5 Stone Anniversary Ring $2,173.00 1.10tcw Platinum Princess Cut Diamond Anniversary Band $2,255.00 1.00tcw Platinum 3 Stone Necklace $3,828.00 2.0tcw Diamond Anniversary Band $4,978.00 1.50tcw Diamond & Sapphire Three Stone $7,645.00 1.25tcw Platinum 5 Stone Princess Cut Anniversary Ring $2,816.00 3.75tcw Platinum Half Bezel Line Bracelet $5,665.00 3.00tcw Platinum Eternity Anniversary Ring Price: $5,033.00 Special: $4,575.00 2.86tcw Platinum Sapphire & Diamond Three Stone $7,040.00 3.10tcw Platinum Designer Eternity Anniversary Ring $6,105.00 4.50tcw Platinum Diamond & Ruby Eternity Anniversary Ring $6,480.00 6.00tcw Platinum Round Brilliant Diamond Bracelet $9,845.00 2.05tcw Platinum Princess Cut Diamond Ring $9,873.00 8.5tcw Platinum Diamond Necklace $16,770.00 2.25ct Three Stone Diamond & Platinum Ring $15,510.00 "Forever Yours" Eternity Bands & Rings Diamond Three Stone Ring Collection Diamond & Blue Sapphire Jewelry Diamond and Ruby Jewelry Elegant Pink Sapphire Diamond Earrings Diamond Bracelets Diamond Anniversary Rings

About Us

• Company Background
• Customer Feedback
• News & Articles
• Location
• Affiliations

Learn Before You Buy

• Signature Services
• 45 Day Return Policy
• Our Lifetime Warranty
• Jewelry Insurance
• Shipping Information