Nine carats of pure yellow in a perfect square. That's not a combination you see every day. Most large yellow sapphires get cut into ovals or cushions to maximize weight. This 9.22-carat piece from Old Bangkok went a different direction—the square cut at 13.5 × 13.5 × 4.71 mm creates geometric precision that's both modern and timeless. Look at the photos: that yellow is clean, saturated, and evenly distributed across every facet.
The Square Advantage
Square cuts are rare in sapphires because they require excellent rough material—any color zoning or clarity issues become immediately obvious in the broad, open facets. This stone has neither problem. The yellow color is consistent from corner to corner, and the good clarity means you're looking into the gem, not at surface-level inclusions. The perfectly symmetrical 13.5mm sides create a commanding presence that works beautifully in statement rings, architectural pendants, or custom designs that celebrate clean lines and bold geometry.
Bangkok's Golden Legacy
Old Bangkok sapphires built their reputation on producing yellows with exceptional color saturation. This piece has been gently heated, a traditional enhancement practiced for centuries to optimize the color already present in the rough. It's not creating something artificial; it's revealing the stone's full potential. The international gem market recognizes heated Bangkok sapphires as premium material, valued for their stable, permanent color enhancement. At this size and with this level of color consistency, you're looking at serious material from one of the world's most respected sapphire origins.
Jupiter's Perfect Square
In Vedic astrology, yellow sapphire is Pukhraj, Jupiter's stone for wisdom, prosperity, and spiritual growth. At 10.04 ratti, this exceeds the typical astrological threshold by a comfortable margin—this is substantial weight for serious purposes. The square shape offers unique versatility: it creates a bold, modern statement in rings where the geometric form stands out, or works beautifully in pendants where the symmetry creates visual balance. DGLA certification documents the origin and treatment, giving you third-party verification of authenticity.
What Makes This Sapphire Exceptional:
- 9.22 carats—substantial size in quality material
- Old Bangkok, Thailand—legendary yellow sapphire source
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Yellow color—vivid, evenly saturated throughout
- Good clarity—transparent with excellent light return
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Square cut—rare geometric shape with perfect symmetry
- Traditional heat treatment—standard color optimization
- DGLA certified—documented authenticity
- 13.5 × 13.5mm—perfectly symmetrical dimensions
This is for someone who appreciates that shape matters as much as size. The square cut gives this Bangkok sapphire a personality that sets it apart from standard ovals and cushions, while the yellow color and substantial weight deliver the presence that serious collectors and designers seek. Whether you're creating an architectural jewelry piece, need a Jupiter remedy with geometric distinction, or simply want a Thai sapphire that doesn't look like everything else, this delivers both pedigree and personality.
Perfect for: Modern architectural pendants, geometric jewelry designs, Vedic astrology (Pukhraj for Jupiter/Guru), gemstone collections, or anyone who wants premium Thai sapphire quality in a distinctive square shape with perfect symmetry.