Platinum, Kashmir Sapphire, and Diamond Brooch

ca. 1910; the scroll- and shield-form brooch centering a cushion-cut Kashmir sapphire weighing 4.22 cts. surmounted by 11 bezel-set old European-cut diamonds weighing approx. 0.12-1.00 ct.; further set throughout with old mine- and old European-cut diamonds weighing approx. 11.00 tcw.; 21.98 dwts.; 1 7/8 x 4 1/4 in.

  • Provenance: The Estate of a Marion, Massachusetts Lady.
  • Notes: Accompanied by AGL report no. 1136006 dated November 21, 2023 stating that the sapphire is of Kashmir origin with no evidence of heat.

    Accompanied by Gübelin report no. 24032033 dated March 12, 2024 stating that the sapphire is of Kashmir origin with no indication of heating (NTE), with a gemstone rating of 88.5 (Excellent).
  • Condition: Sapphire measuring 9.25 x 7.91 x 6.24 mm.; approx. diamond grade G-I, VS/SI. Overall good original condition; brooch finding likely replaced.

    Please note: All property is sold "AS IS" and any statement, whether oral or written, is given as a courtesy and shall not be deemed as a guarantee, warranty, or representation of the authenticity of authorship, physical condition, size, quality, rarity, importance, provenance, exhibitions, literature or historical relevance of the property or otherwise. The absence of a condition report does not imply the item is in perfect condition.

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May 5, 2024 11:00 AM EDT
Boston, MA, US

Grogan & Company

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Bid Increments
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$0 $999 $100
$1,000 $1,999 $100
$2,000 $4,999 $250
$5,000 $9,999 $500
$10,000 $19,999 $1,000
$20,000 $49,999 $2,500
$50,000 $99,999 $5,000
$100,000 + $10,000