A natural 5.39 carat color-change sapphire in a round cut, from Sri Lanka (Ceylon), completely unheated, with a GIA report. Color-change sapphires shift hue between two distinctly different colors depending on the light source — this stone transitions between its daylight color and its incandescent color, a phenomenon caused by trace vanadium in the crystal. At 5.39 carats, this is an exceptional size for any sapphire; in a color-change stone, particularly one that is unheated and GIA-documented, it represents a genuinely rare combination.

Why Choose this 5.39 ct Unheated Ceylon Color-Change Sapphire?

The rarity of this stone comes from four combined factors: 5+ carats (size), color-change phenomenon (rarity of the optical effect), unheated status (natural color), and GIA documentation (confirmed quality). At the 5+ carat level in unheated color-change from Ceylon, each of these factors individually already narrows the available pool; together they represent a stone that will rarely appear at market again.

Key Benefits of this Natural Color-Change Sapphire

• Unheated Ceylon Origin, GIA Documented
  No thermal treatment. GIA confirms weight, dimensions, origin, treatment status, and color-change phenomenon.
• Exceptional 5+ Carat Size
  Color-change sapphires above 5 carats in unheated quality are genuinely rare.
• Dual Color-Shift Phenomenon
  The stone reads a different hue under daylight versus incandescent light — visible and dramatic in this size.
• Investment-Grade Specification
  All four premium criteria — size, phenomenon, unheated, certified — present in a single stone.
• Durable for Daily Wear
  Corundum at Mohs 9, second only to diamond.

Features

• Carat Weight: 5.39 Carats
• Gem Type: Natural Color-Change Sapphire
• Cut: Round
• Origin: Ceylon (Sri Lanka) — GIA confirmed
• Treatment: Unheated — GIA confirmed
• Color: Color-Change (hue shift between daylight and incandescent light)
• Clarity: Eye-clean — no visible inclusions under normal viewing
• Certification: GIA report
• Hardness: 9 on the Mohs scale

This 5.39 ct unheated Ceylon color-change sapphire has been hand-selected as an exceptional specimen — the intersection of large size, rare phenomenon, natural treatment status, and independent documentation is the combination that defines the finest collector-grade sapphires.

Why Customers Love This Gemstone

• GIA-Confirmed Everything: Size, origin, treatment, and phenomenon — all independently documented.
• Exceptional Size for This Variety: 5+ carat unheated color-change is a rare offering.
• Living Color: The shift is dramatic at this size — fully visible and striking in any light.
• Trusted Source: Direct from Ceylon, GIA-confirmed, treatment disclosed honestly.

Owning this 5.39 ct unheated GIA Ceylon color-change sapphire means acquiring a stone that is exceptional across every criterion that defines sapphire rarity.

Perfect Uses for this 5.39 ct Color-Change Sapphire

• Investment-grade gemstone collection
• Statement pendant center stone
• Collectors of phenomenon sapphires with GIA documentation
• Heirloom-quality custom commission
• Museum-quality private collection piece