THE COLLECTOR PRACTICE

One of a Kind

One stone. One jewel.

Every piece in One of a Kind begins with a single natural gemstone, chosen for its colour, its light and the small irregularities that make it unrepeatable: a Paraiba tourmaline with neon depth, a Colombian emerald with its own garden inside, a bicolor sapphire that shifts from one shade to the next, an alexandrite that changes with the light. The setting is then drawn for that stone alone.

Many of these rings are made to be worn as engagement rings. Each is made to order in 14K or 18K gold, typically in 3–5 weeks. When a jewel finds its owner, it moves to the Archive.

Looking for a permanent design instead? Explore Heirloom & Engagement Rings or read our bicolor sapphire engagement ring guide.

Elementos: 92

Filtrar (92)
  • One Of A Kind: Afterglow Bicolor Tourmaline Diamond Ring in 14K and 18K Gold, 4.95ct

    One Of A Kind: Afterglow Bicolor Tourmaline Diamond Ring in 14K and 18K Gold, 4.95ct

    Precio regular
    $7,500.00 USD - $8,000.00 USD
    Precio regular
    Precio de venta
    $7,500.00 USD - $8,000.00 USD
  • One Of A Kind: Grotta Azzurra Paraiba Tourmaline Ring in 14K and 18K Gold

    One Of A Kind: Grotta Azzurra Paraiba Tourmaline Ring in 14K and 18K Gold

    Precio regular
    $17,000.00 USD - $17,500.00 USD
    Precio regular
    Precio de venta
    $17,000.00 USD - $17,500.00 USD
  • One Of A Kind: Colombian Emerald Looking Glass Ring in 14K and 18K Gold, 3.14ct

    One Of A Kind: Colombian Emerald Looking Glass Ring in 14K and 18K Gold, 3.14ct

    Precio regular
    $25,500.00 USD - $26,000.00 USD
    Precio regular
    Precio de venta
    $25,500.00 USD - $26,000.00 USD
  • One Of A Kind: Tidal Crown Paraiba Tourmaline Diamond Ring in 14K and 18K Gold

    One Of A Kind: Tidal Crown Paraiba Tourmaline Diamond Ring in 14K and 18K Gold

    Precio regular
    $12,000.00 USD - $12,500.00 USD
    Precio regular
    Precio de venta
    $12,000.00 USD - $12,500.00 USD
  • One Of A Kind: Bleu Majesté Blue Unheated Sapphire Ring in 14K and 18K Gold, 4.95ct

    One Of A Kind: Bleu Majesté Blue Unheated Sapphire Ring in 14K and 18K Gold, 4.95ct

    Precio regular
    $22,000.00 USD - $22,500.00 USD
    Precio regular
    Precio de venta
    $22,000.00 USD - $22,500.00 USD
  • One Of A Kind: Althea Pink Tourmaline Ring in 14K and 18K Gold

    One Of A Kind: Althea Pink Tourmaline Ring in 14K and 18K Gold

    Precio regular
    $2,300.00 USD - $2,800.00 USD
    Precio regular
    Precio de venta
    $2,300.00 USD - $2,800.00 USD
  • One Of A Kind: Heart Of The Reef Paraiba Tourmaline Ring in 14K and 18K Gold

    One Of A Kind: Heart Of The Reef Paraiba Tourmaline Ring in 14K and 18K Gold

    Precio regular
    $16,000.00 USD - $16,500.00 USD
    Precio regular
    Precio de venta
    $16,000.00 USD - $16,500.00 USD
  • One Of A Kind: Cœur d'Ambre Orange Sapphire Ring in 14K and 18K Gold

    One Of A Kind: Cœur d'Ambre Orange Sapphire Ring in 14K and 18K Gold

    Precio regular
    $3,900.00 USD - $4,400.00 USD
    Precio regular
    Precio de venta
    $3,900.00 USD - $4,400.00 USD
  • One Of A Kind: Hidden Light Alexandrite Diamond Ring in 14K and 18K Gold, 1.7ct

    One Of A Kind: Hidden Light Alexandrite Diamond Ring in 14K and 18K Gold, 1.7ct

    Precio regular
    $27,000.00 USD - $27,500.00 USD
    Precio regular
    Precio de venta
    $27,000.00 USD - $27,500.00 USD
  • One Of A Kind: Blue Sapphire Marigold Diamond Ring in 14K and 18K Gold

    One Of A Kind: Blue Sapphire Marigold Diamond Ring in 14K and 18K Gold

    Precio regular
    $2,400.00 USD - $2,900.00 USD
    Precio regular
    Precio de venta
    $2,400.00 USD - $2,900.00 USD
  • One Of A Kind: Noctiara Tricolor Tourmaline Ring in 14K and 18K Gold

    One Of A Kind: Noctiara Tricolor Tourmaline Ring in 14K and 18K Gold

    Precio regular
    $2,900.00 USD - $3,400.00 USD
    Precio regular
    Precio de venta
    $2,900.00 USD - $3,400.00 USD
  • One Of A Kind: Painter's Garden Bicolor Sapphire Ring in 14K and 18K Gold

    One Of A Kind: Painter's Garden Bicolor Sapphire Ring in 14K and 18K Gold

    Precio regular
    $4,200.00 USD - $4,600.00 USD
    Precio regular
    Precio de venta
    $4,200.00 USD - $4,600.00 USD
  • One Of A Kind: Colombian Emerald Evermore Diamond Ring in 14K and 18K Gold

    One Of A Kind: Colombian Emerald Evermore Diamond Ring in 14K and 18K Gold

    Precio regular
    $6,000.00 USD - $6,500.00 USD
    Precio regular
    Precio de venta
    $6,000.00 USD - $6,500.00 USD
  • One Of A Kind: Keepsake Colombian Emerald & Diamond Ring in 14K and 18K Gold

    One Of A Kind: Keepsake Colombian Emerald & Diamond Ring in 14K and 18K Gold

    Precio regular
    $4,750.00 USD - $5,250.00 USD
    Precio regular
    Precio de venta
    $4,750.00 USD - $5,250.00 USD
  • One Of A Kind: Hall Of Mirrors Aquamarine Diamond Ring in 14K and 18K Gold

    One Of A Kind: Hall Of Mirrors Aquamarine Diamond Ring in 14K and 18K Gold

    Precio regular
    $8,500.00 USD - $9,000.00 USD
    Precio regular
    Precio de venta
    $8,500.00 USD - $9,000.00 USD
  • One Of A Kind: Luce Marina Paraiba Tourmaline Ring in 14K and 18K Gold

    One Of A Kind: Luce Marina Paraiba Tourmaline Ring in 14K and 18K Gold

    Precio regular
    $7,800.00 USD - $8,300.00 USD
    Precio regular
    Precio de venta
    $7,800.00 USD - $8,300.00 USD
  • One Of A Kind: Seafoam Bloom Paraiba Tourmaline Ring in 14K and 18K Gold

    One Of A Kind: Seafoam Bloom Paraiba Tourmaline Ring in 14K and 18K Gold

    Precio regular
    $6,800.00 USD - $7,300.00 USD
    Precio regular
    Precio de venta
    $6,800.00 USD - $7,300.00 USD
  • One Of A Kind: Le Reliquaire Bicolor Tourmaline Ring in 14K and 18K Gold

    One Of A Kind: Le Reliquaire Bicolor Tourmaline Ring in 14K and 18K Gold

    Precio regular
    $4,200.00 USD - $4,700.00 USD
    Precio regular
    Precio de venta
    $4,200.00 USD - $4,700.00 USD
  • One Of A Kind: Amber Reverie Sapphire Ring in 14K and 18K Gold

    One Of A Kind: Amber Reverie Sapphire Ring in 14K and 18K Gold

    Precio regular
    $3,500.00 USD - $4,000.00 USD
    Precio regular
    Precio de venta
    $3,500.00 USD - $4,000.00 USD
  • One Of A Kind: Eleanor Emerald Diamond Ring in 14K, 18K Gold and Platinum, 3.19ct

    One Of A Kind: Eleanor Emerald Diamond Ring in 14K, 18K Gold and Platinum, 3.19ct

    Precio regular
    $15,000.00 USD - $16,000.00 USD
    Precio regular
    Precio de venta
    $15,000.00 USD - $16,000.00 USD
  • One Of A Kind: Crown Of The Light Colombian Emerald Ring in 14K and 18K Gold

    One Of A Kind: Crown Of The Light Colombian Emerald Ring in 14K and 18K Gold

    Precio regular
    $23,000.00 USD - $23,500.00 USD
    Precio regular
    Precio de venta
    $23,000.00 USD - $23,500.00 USD
  • One Of A Kind: Meridian Reef Paraiba Tourmaline Diamond Ring in 14K and 18K Gold

    One Of A Kind: Meridian Reef Paraiba Tourmaline Diamond Ring in 14K and 18K Gold

    Precio regular
    $12,000.00 USD - $12,500.00 USD
    Precio regular
    Precio de venta
    $12,000.00 USD - $12,500.00 USD
  • One Of A Kind: Heart Of Provence Bicolor Sapphire Heart Ring in 14K and 18K Gold

    One Of A Kind: Heart Of Provence Bicolor Sapphire Heart Ring in 14K and 18K Gold

    Precio regular
    $3,500.00 USD - $3,900.00 USD
    Precio regular
    Precio de venta
    $3,500.00 USD - $3,900.00 USD
  • One Of A Kind: Lagoon Light Paraiba Tourmaline Ring in 14K and 18K Gold

    One Of A Kind: Lagoon Light Paraiba Tourmaline Ring in 14K and 18K Gold

    Precio regular
    $8,000.00 USD - $8,400.00 USD
    Precio regular
    Precio de venta
    $8,000.00 USD - $8,400.00 USD
  • One Of A Kind: Wisteria Dream Tanzanite Diamond Ring in 14K and 18K Gold

    One Of A Kind: Wisteria Dream Tanzanite Diamond Ring in 14K and 18K Gold

    Precio regular
    $4,500.00 USD - $4,900.00 USD
    Precio regular
    Precio de venta
    $4,500.00 USD - $4,900.00 USD
  • One Of A Kind: Bicolor Sapphire Golden Orchard Ring in 14K and 18K Gold

    One Of A Kind: Bicolor Sapphire Golden Orchard Ring in 14K and 18K Gold

    Precio regular
    $2,950.00 USD - $3,350.00 USD
    Precio regular
    Precio de venta
    $2,950.00 USD - $3,350.00 USD
  • One Of A Kind: Starry Heart Bicolor Sapphire Ring in 14K and 18K Gold

    One Of A Kind: Starry Heart Bicolor Sapphire Ring in 14K and 18K Gold

    Precio regular
    $2,950.00 USD - $3,350.00 USD
    Precio regular
    Precio de venta
    $2,950.00 USD - $3,350.00 USD
  • One Of A Kind: Australian Sapphire Evening Star Ring in 14K and 18K Gold

    One Of A Kind: Australian Sapphire Evening Star Ring in 14K and 18K Gold

    Precio regular
    $4,900.00 USD - $5,400.00 USD
    Precio regular
    Precio de venta
    $4,900.00 USD - $5,400.00 USD
  • One Of A Kind: Bicolor Sapphire Cypress Diamond Ring in 14K and 18K Gold

    One Of A Kind: Bicolor Sapphire Cypress Diamond Ring in 14K and 18K Gold

    Precio regular
    $2,950.00 USD - $3,350.00 USD
    Precio regular
    Precio de venta
    $2,950.00 USD - $3,350.00 USD
  • One Of A Kind: Bicolor Sapphire Starlight Harvest Ring in 14K and 18K Gold

    One Of A Kind: Bicolor Sapphire Starlight Harvest Ring in 14K and 18K Gold

    Precio regular
    $5,200.00 USD - $5,700.00 USD
    Precio regular
    Precio de venta
    $5,200.00 USD - $5,700.00 USD
  • One Of A Kind: Midnight In Arles Bicolor Sapphire Ring in 14K and 18K Gold

    One Of A Kind: Midnight In Arles Bicolor Sapphire Ring in 14K and 18K Gold

    Precio regular
    $4,500.00 USD - $4,900.00 USD
    Precio regular
    Precio de venta
    $4,500.00 USD - $4,900.00 USD
  • One Of A Kind: Tourmaline Blush Stardust Ring in 14K and 18K Gold

    One Of A Kind: Tourmaline Blush Stardust Ring in 14K and 18K Gold

    Precio regular
    $2,200.00 USD - $2,600.00 USD
    Precio regular
    Precio de venta
    $2,200.00 USD - $2,600.00 USD