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: Midnight Stillness Bi-Color Sapphire Diamond Ring in 14K and 18K Gold

    One Of A Kind: Midnight Stillness Bi-Color Sapphire Diamond Ring in 14K and 18K Gold

    Precio regular
    $5,800.00 USD - $6,200.00 USD
    Precio regular
    Precio de venta
    $5,800.00 USD - $6,200.00 USD
  • One Of A Kind: After The Storm Bi-Color Sapphire Diamond Ring in 14K and 18K Gold

    One Of A Kind: After The Storm Bi-Color Sapphire Diamond Ring in 14K and 18K Gold

    Precio regular
    $9,200.00 USD - $9,700.00 USD
    Precio regular
    Precio de venta
    $9,200.00 USD - $9,700.00 USD
  • One Of A Kind: Brush Stroke Of Dusk Sapphire Diamond Ring in 14K and 18K Gold

    One Of A Kind: Brush Stroke Of Dusk Sapphire Diamond Ring in 14K and 18K Gold

    Precio regular
    $4,300.00 USD - $4,700.00 USD
    Precio regular
    Precio de venta
    $4,300.00 USD - $4,700.00 USD
  • One Of A Kind: Bicolor Sapphire Gilded Grove Diamond Ring in 14K and 18K Gold

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

    Precio regular
    $4,400.00 USD - $4,800.00 USD
    Precio regular
    Precio de venta
    $4,400.00 USD - $4,800.00 USD
  • One Of A Kind: Alexandrite Crown of Two Lights Ring in 14K & 18K Gold, 1.19ct

    One Of A Kind: Alexandrite Crown of Two Lights Ring in 14K & 18K Gold, 1.19ct

    Precio regular
    $15,000.00 USD - $15,400.00 USD
    Precio regular
    Precio de venta
    $15,000.00 USD - $15,400.00 USD
  • One Of A Kind: Paraiba Tourmaline Sovereign Diamond Ring in 14K and 18K Gold

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

    Precio regular
    $35,000.00 USD - $35,500.00 USD
    Precio regular
    Precio de venta
    $35,000.00 USD - $35,500.00 USD
  • One Of A Kind: Ruby Belladonna Diamond Ring in 14K and 18K Gold

    One Of A Kind: Ruby Belladonna Diamond Ring in 14K and 18K Gold

    Precio regular
    $4,700.00 USD - $5,000.00 USD
    Precio regular
    Precio de venta
    $4,700.00 USD - $5,000.00 USD
  • One Of A Kind: Red Spinel Emberveil Diamond Ring in 14K and 18K Gold

    One Of A Kind: Red Spinel Emberveil Diamond Ring in 14K and 18K Gold

    Precio regular
    $3,200.00 USD - $3,600.00 USD
    Precio regular
    Precio de venta
    $3,200.00 USD - $3,600.00 USD
  • One Of A Kind: Maison du Soir Ring in 14K and 18K Gold

    One Of A Kind: Maison du Soir Ring in 14K and 18K Gold

    Precio regular
    $2,700.00 USD - $3,000.00 USD
    Precio regular
    Precio de venta
    $2,700.00 USD - $3,000.00 USD
  • One Of A Kind: Mermaid Tanzanite Diamond Ring in 14K and 18K Gold

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

    Precio regular
    $3,000.00 USD - $3,400.00 USD
    Precio regular
    Precio de venta
    $3,000.00 USD - $3,400.00 USD
  • One Of A Kind: Cathedral Of Light Moonstone Diamond Ring in 14K and 18K Gold

    One Of A Kind: Cathedral Of Light Moonstone Diamond Ring in 14K and 18K Gold

    Precio regular
    $4,500.00 USD - $5,000.00 USD
    Precio regular
    Precio de venta
    $4,500.00 USD - $5,000.00 USD
  • One Of A Kind: Blue Spinel Miraj Diamond Ring in 14K and 18K Gold

    One Of A Kind: Blue Spinel Miraj Diamond 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: Starry Muse Alexandrite Diamond Ring in 14K and 18K Gold

    One Of A Kind: Starry Muse Alexandrite 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
  • Salt & Pepper Diamond Vita Noire Diamond Ring in 14K and 18K Gold

    Salt & Pepper Diamond Vita Noire Diamond Ring in 14K and 18K Gold

    Precio regular
    $5,600.00 USD - $5,900.00 USD
    Precio regular
    Precio de venta
    $5,600.00 USD - $5,900.00 USD
  • One of a Kind: Queens Prayer Ruby and Alexandrite Ring in 14K and 18K Gold

    One of a Kind: Queens Prayer Ruby and Alexandrite Ring in 14K and 18K Gold

    Precio regular
    $8,800.00 USD - $9,100.00 USD
    Precio regular
    Precio de venta
    $8,800.00 USD - $9,100.00 USD
  • One Of A Kind: Bicolor Tourmaline Veil Diamond Ring in 14K and 18K Gold

    One Of A Kind: Bicolor Tourmaline Veil Diamond Ring in 14K and 18K Gold

    Precio regular
    $3,300.00 USD - $3,700.00 USD
    Precio regular
    Precio de venta
    $3,300.00 USD - $3,700.00 USD
  • One Of A Kind: Internal Flawless Diamond Lumina Ring in 14K and 18K Gold, 1ct

    One Of A Kind: Internal Flawless Diamond Lumina Ring in 14K and 18K Gold, 1ct

    Precio regular
    $19,000.00 USD - $20,000.00 USD
    Precio regular
    Precio de venta
    $19,000.00 USD - $20,000.00 USD
  • One Of A Kind: Galaxienne Salt & Pepper Diamond Ring in 14K and 18K Gold

    One Of A Kind: Galaxienne Salt & Pepper Diamond Ring in 14K and 18K Gold

    Precio regular
    $5,300.00 USD - $5,700.00 USD
    Precio regular
    Precio de venta
    $5,300.00 USD - $5,700.00 USD
  • One Of A Kind: Teal Sapphire Marrow Diamond Ring in 14K and 18K Gold

    One Of A Kind: Teal Sapphire Marrow Diamond Ring in 14K and 18K Gold

    Precio regular
    $2,500.00 USD - $2,900.00 USD
    Precio regular
    Precio de venta
    $2,500.00 USD - $2,900.00 USD
  • One Of A Kind: Alexandrite & Paraiba Tourmaline Waking Dream Ring in 14K and 18K Gold

    One Of A Kind: Alexandrite & Paraiba Tourmaline Waking Dream Ring in 14K and 18K Gold

    Precio regular
    $8,500.00 USD - $8,800.00 USD
    Precio regular
    Precio de venta
    $8,500.00 USD - $8,800.00 USD
  • One Of A Kind: Stormheart Salt & Pepper Heart Diamond Ring in 14K and 18K Gold

    One Of A Kind: Stormheart Salt & Pepper Heart Diamond Ring in 14K and 18K Gold

    Precio regular
    $4,800.00 USD - $5,200.00 USD
    Precio regular
    Precio de venta
    $4,800.00 USD - $5,200.00 USD
  • One Of A Kind: Solara & Mare Ring Diamond Ring in 14K and 18K Gold

    One Of A Kind: Solara & Mare Ring Diamond Ring in 14K and 18K Gold

    Precio regular
    $2,500.00 USD - $3,000.00 USD
    Precio regular
    Precio de venta
    $2,500.00 USD - $3,000.00 USD
  • One Of A Kind: Amaranthe Garnet Studs in 14K and 18K Gold

    One Of A Kind: Amaranthe Garnet Studs in 14K and 18K Gold

    Precio regular
    $2,500.00 USD - $3,000.00 USD
    Precio regular
    Precio de venta
    $2,500.00 USD - $3,000.00 USD
  • One Of A Kind: Spinel & Paraiba Tourmaline Rosarium Diamond Ring in 14K and 18K Gold

    One Of A Kind: Spinel & Paraiba Tourmaline Rosarium Diamond Ring in 14K and 18K Gold

    Precio regular
    $4,500.00 USD - $5,000.00 USD
    Precio regular
    Precio de venta
    $4,500.00 USD - $5,000.00 USD
  • One Of A Kind: Bicolor Tourmaline Nightveil Earrings in 14K and 18K Gold

    One Of A Kind: Bicolor Tourmaline Nightveil Earrings in 14K and 18K Gold

    Precio regular
    $4,400.00 USD - $4,700.00 USD
    Precio regular
    Precio de venta
    $4,400.00 USD - $4,700.00 USD
  • One Of A Kind: Rubellite Crimson Oath Diamond Ring in 14K and 18K Gold, 5.5ct

    One Of A Kind: Rubellite Crimson Oath Diamond Ring in 14K and 18K Gold, 5.5ct

    Precio regular
    $4,500.00 USD - $4,800.00 USD
    Precio regular
    Precio de venta
    $4,500.00 USD - $4,800.00 USD
  • One Of A Kind: Florienne Bi-Color Tourmaline Drops in 14K and 18K Gold

    One Of A Kind: Florienne Bi-Color Tourmaline Drops in 14K and 18K Gold

    Precio regular
    $2,300.00 USD - $2,600.00 USD
    Precio regular
    Precio de venta
    $2,300.00 USD - $2,600.00 USD
  • One Of A Kind: Viola Bicolor Tourmaline Pendant in 14K and 18K Gold

    One Of A Kind: Viola Bicolor Tourmaline Pendant in 14K and 18K Gold

    Precio regular
    $1,400.00 USD - $1,900.00 USD
    Precio regular
    Precio de venta
    $1,400.00 USD - $1,900.00 USD
  • One Of A Kind: Bicolor Tourmaline Diana Ring in 14K and 18K Gold

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

    Precio regular
    $2,500.00 USD - $3,000.00 USD
    Precio regular
    Precio de venta
    $2,500.00 USD - $3,000.00 USD
  • One Of A Kind: Frostbloom Salt & Pepper Diamond Ring in 14K and 18K Gold

    One Of A Kind: Frostbloom Salt & Pepper Diamond Ring in 14K and 18K Gold

    Precio regular
    $5,200.00 USD - $5,500.00 USD
    Precio regular
    Precio de venta
    $5,200.00 USD - $5,500.00 USD
  • One Of A Kind: Tanzanite Trillion Vespera Diamond Ring in 14K and 18K Gold

    One Of A Kind: Tanzanite Trillion Vespera Diamond Ring in 14K and 18K Gold

    Precio regular
    $4,800.00 USD - $5,200.00 USD
    Precio regular
    Precio de venta
    $4,800.00 USD - $5,200.00 USD
  • One Of A Kind: Shadowlace Studs in 14K and 18K Gold

    One Of A Kind: Shadowlace Studs in 14K and 18K Gold

    Precio regular
    $2,200.00 USD - $2,500.00 USD
    Precio regular
    Precio de venta
    $2,200.00 USD - $2,500.00 USD