Buying a loose gemstone gives you independence, you get the freedom to make your own choice, your own jewelry design.
3.26 carat oval double cabochon pink star sapphire, unheated, measuring 8.66 × 7.95 × 5.15 mm. The stone displays a sharp, six-rayed silver star across its domed surface under directional light — the asterism phenomenon produced by microscopic rutile needle inclusions aligned within the crystal. Purplish pink body color, fully transparent, with a well-centered, complete star. Unheated: GIA found no indications of heating. Accompanied by GIA Report #2235836233, a Sapphire Origin Report confirming weight, dimensions, color, transparency, unheated status, and geographic origin (Sri Lanka).
Note: The star is visible only under a single directional light source — direct sunlight, a flashlight, or a spotlight. It will not appear under diffuse or overhead ambient lighting.
Expert Opinion
"What makes this stone stand out isn't just that it's a star sapphire — it's that the star is sharp and six-rayed, sitting in a body color that's genuinely transparent, not the milky or opaque material most asterism stones are cut from. At 3.26 carats that combination alone is uncommon. Add a GIA report that confirms Ceylon origin on the same document as the unheated finding, and you have a stone that documents itself completely — phenomenon, color, treatment, and origin, all in one certificate." — Ahmed Shareek
Rarity Analysis
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The asterism itself: phenomenon gemstones — stones that display an optical effect like a star, cat's-eye, or color change — are inherently rarer than standard faceted stones, since the effect depends on a precise internal structure that most rough material never develops.
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Transparency alongside a sharp star: the same rutile silk that creates asterism also scatters light, which is why most star sapphires are translucent to opaque. A star sapphire that is genuinely transparent, delivering both a sharp, well-defined star and good see-through clarity, is a real distinguishing quality factor — most examples on the market have to trade one for the other.
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Pink body color in a star stone: the large majority of star sapphires occur in blue, gray, or black material. Pink asterism sapphires are a smaller niche within an already small category.
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GIA Sapphire Origin Report: this stone carries dual confirmation — unheated status and Ceylon geographic origin — documented together on a single GIA report, rather than a basic identification report alone.
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Size: at 3.26 carats, this is a substantial stone for a transparent star sapphire of this quality, where fine material tends to run smaller.
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Combined effect: a sharp, complete six-ray star, in transparent pink body color, unheated, GIA-confirmed to Ceylon, at over three carats — each factor is uncommon on its own, and the combination is what makes this particular stone difficult to replace.
Buying Guidance
- Remember the star only appears under a single directional light source (direct sun, a flashlight, or a spotlight) — it will not show under diffuse or overhead ambient lighting, so view it accordingly before judging the effect.
- Evaluate star quality on three criteria: sharpness (how crisp and thin the rays are), centering (how well the star sits in the middle of the dome), and completeness (whether all six rays reach the girdle) — this stone scores well on all three.
- A star sapphire that is both transparent and displays a strong, sharp asterism is uncommon; most stones require a tradeoff between the two, so this combination is worth weighing carefully against comparable stones.
- A GIA Sapphire Origin Report carries more evidentiary weight than a basic identification report, since it independently confirms geographic origin in addition to treatment status — a meaningful difference when comparing two similar-looking stones.
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Try Before You Buy: Crescent Gems offers try-at-home options so you can see the star perform under your own lighting before committing.
Learn More About This Gemstone
Gemstone Data — At a Glance
| Item # |
CG8288 |
| Carat Weight |
3.26 ct |
| Species / Variety |
Natural Pink Star Sapphire (Corundum) |
| Shape / Cut |
Oval, Double Cabochon |
| Dimensions |
8.66 × 7.95 × 5.15 mm |
| Color / Intensity |
Pink (Purplish Pink) |
| Phenomenon |
Six-ray asterism |
| Treatment |
None — unheated, no indications of heating per GIA |
| Origin |
Sri Lanka (Ceylon) — GIA confirmed |
| Clarity |
Not specified |
| Transparency |
Transparent |
| Hardness |
9 (Mohs) |
| Certification |
GIA Report #2235836233 |
Features
- SKU: CG8288
- Carat Weight: 3.26 carats
- Variety: Pink Star Sapphire
- Shape: Oval
- Cutting Style: Double Cabochon
- Dimensions: 8.66 × 7.95 × 5.15 mm
- Gem Type: Natural Pink Star Sapphire
- Origin: Sri Lanka (Ceylon) — GIA confirmed (GIA Sapphire Origin Report)
- Phenomenon: Six-ray asterism
- Treatment: None — unheated, no indications of heating per GIA
- Color: Pink (Purplish Pink)
- Transparency: Transparent
- Certification: GIA Report #2235836233
- Hardness: 9 on the Mohs scale
Care
- Clean with lukewarm water and mild soap using a soft brush
- Store separately to avoid surface contact
- Remove before heavy physical activity
- Avoid ultrasonic or steam cleaners
One of a Kind
This is a single natural gemstone, not a manufactured or lab-created replica — no two star sapphires form with identical color, asterism pattern, and internal character. Once this stone sells, it's gone; there is no duplicate. What you see documented on the GIA report is the exact, individual stone you receive.
What's included with this Pink Star Sapphire
- GIA Report #2235836233
- Gemstone packed in a gem sleeve
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