3.86Ct Natural Unheated Rare Color Changing Sapphire

The Singular Phenomenon: A Rare 3.86 Carat Unheated Color-Change Sapphire
In the world of high jewelry, rarity is defined by what nature achieves without human intervention. This 3.86 carat Natural Sapphire is a triple-rarity of such magnitude that it transcends the category of "gemstone" and enters the realm of the Heirloom Treasure.
The Rarity of Origin:
While nearly all sapphires require heat to reveal their color, this specimen is completely unheated. Representing the elite top 1% of all gemstones, it was born from the earth with its soulful Blue hue already perfect. Its clarity and fire are not products of a furnace, but of millions of years of natural pressure—a "Collector’s Item" for the purist who demands absolute authenticity.
The Phenomenon of Light:
Beyond its unheated status, this sapphire possesses a mesmerizing Color-Change phenomenon. By day, it radiates a commanding, classic Blue. Under the soft warmth of incandescent light, it undergoes a dramatic metamorphosis into a romantic Purplish-Pink. This "Alexandrite-like" shift is a geological miracle, occurring in only a fraction of a percent of the world's corundum.
The Grandeur of Scale:
Size in untreated gems is the ultimate multiplier of value. While most color-change stones are found in small, commercial sizes, this sapphire boasts a monumental 3.86 carat weight. Its expansive 10.38mm face and Excellent Cut ensure it is not merely a stone to be held, but a centerpiece to be admired from across a room.
A masterpiece of natural engineering, this sapphire is a permanent asset for the most discerning portfolio.
Natural Sapphire
Unheated
3.86 Carats
Oval Cut
10.38 x 8.95 x 5.02 mm
Excellent Cut, Polish & Symmetry 
Transparent 
Color Changing
Blue to Purplish-Pink
Hardness: 9
Report #: GEM20251020150342
Rare
Treasure 
Heirloom 
Collector’s Item