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Natural Ceylon Blue Star Sapphire Cabochon, 101.54 Carats

Held up to the light, this Ceylon blue star sapphire opens its eye instantly — a tight six-ray star gliding across a deep cornflower-to-royal blue dome as the stone turns in your palm. At over 100 carats, it is a substantial cabochon, cut in the classic high-domed Sri Lankan style that lets the asterism travel freely from edge to edge with no dead zones.

The star is formed by dense, oriented needles of rutile silk trapped within the corundum lattice during its formation deep in the gem gravels of Sri Lanka's Ratnapura or Elahera fields — the same "Island of Gems" that has supplied royal courts and master jewelers for over two thousand years. This is a natural, unheated stone; nothing has been done to intensify the color or sharpen the star beyond what the earth already gave it, which makes it a rare find among commercial-grade star sapphires that are routinely heat-treated.

Translucent to near-transparent along the edges, with good body color saturation and a well-centered star, it is equally suited to a serious collector's cabinet. Each star sapphire is optically unique — no two asterisms behave quite the same under light — so what you see in these photographs is the individual character of this exact stone.


• Type: Natural Blue Star Sapphire

• Weight: 101.54 Carats

• Color: Blue

• Shape/Cut: Cabochon

• Measurements: 23.15 x 20.91 x 17.82 (mm)

• Origin: Sri Lanka


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Held up to the light, this Ceylon blue star sapphire opens its eye instantly — a tight six-ray star gliding across a deep cornflower-to-royal blue dome as the stone turns in your palm. At over 100 carats, it is a substantial cabochon, cut in the classic high-domed Sri Lankan style that lets the asterism travel freely from edge to edge with no dead zones.

The star is formed by dense, oriented needles of rutile silk trapped within the corundum lattice during its formation deep in the gem gravels of Sri Lanka's Ratnapura or Elahera fields — the same "Island of Gems" that has supplied royal courts and master jewelers for over two thousand years. This is a natural, unheated stone; nothing has been done to intensify the color or sharpen the star beyond what the earth already gave it, which makes it a rare find among commercial-grade star sapphires that are routinely heat-treated.

Translucent to near-transparent along the edges, with good body color saturation and a well-centered star, it is equally suited to a serious collector's cabinet. Each star sapphire is optically unique — no two asterisms behave quite the same under light — so what you see in these photographs is the individual character of this exact stone.


• Type: Natural Blue Star Sapphire

• Weight: 101.54 Carats

• Color: Blue

• Shape/Cut: Cabochon

• Measurements: 23.15 x 20.91 x 17.82 (mm)

• Origin: Sri Lanka