A natural 1.73 carat white sapphire in a radiant cut, colorless and untreated. White sapphire is natural corundum that formed without the trace elements that produce color — the same mineral species as blue, yellow, or pink sapphire but entirely without chromophores. The radiant cut at 1.73 carats produces a stone with strong face-up presence and a modern rectangular silhouette — a format that delivers both architectural clarity and brilliant light return in colorless material.

Why Choose this 1.73 ct Radiant White Sapphire?

At 1.73 carats in a radiant cut, this white sapphire has the size and the format for confident engagement ring and pendant center stone use. The radiant cut produces more light return than step cuts and more architectural presence than round brilliants — the middle ground between sparkle and structure that suits contemporary jewelry design. Untreated status means the colorlessness is entirely natural, with no heat treatment applied at any stage.

Key Benefits of this Natural White Sapphire

• Untreated Natural Colorlessness
  No heat treatment, no coating, no filling — natural colorless corundum exactly as found.
• Mohs 9 Hardness
  The hardest colorless gemstone other than diamond — appropriate for daily ring wear without special care.
• Radiant Cut Versatility
  Architectural rectangular outline with brilliant faceting — more structured than round, more sparkle than step cuts.
• Strong 1.7-Carat Size
  Above 1.5 carats — visible and impactful in any engagement or pendant setting.
• Natural Diamond Alternative
  Colorless, hard, durable — at a fraction of the diamond price.

Features

• Carat Weight: 1.73 Carats
• Gem Type: Natural White Sapphire
• Cut: Radiant
• Treatment: Untreated
• Color: Colorless
• Clarity: Eye-clean — no visible inclusions under normal viewing
• Hardness: 9 on the Mohs scale

This 1.73 ct radiant white sapphire has been hand-selected for colorlessness and eye-clean clarity — the qualities that allow it to perform as an effective diamond alternative in any setting.

Why Customers Love This Gemstone

• Hardest Colorless Alternative: Mohs 9 — only diamond exceeds it in hardness for daily wear.
• Untreated Colorlessness: Natural — no coating or enhancement of any kind.
• Radiant Format: More architectural presence than round, more brilliance than step cuts.
• Trusted Source: Untreated status disclosed honestly, stone selected for colorlessness.

Owning this 1.73 ct radiant white sapphire means choosing the most durable colorless diamond alternative in the format that balances sparkle and structure.

Perfect Uses for this 1.73 ct White Sapphire

• Engagement ring center stone — diamond alternative
• Pendant solitaire in white gold or platinum
• Contemporary or minimalist ring design
• East-west bezel setting
• September birthstone gift