Skip to main content
Go to accessibility notice


    Antique Opal, Diamond, Demantoid Garnet, Platinum-Topped Gold Brooch, circa 1905
    The brooch features a round-shaped opal measuring 14.00 x 14.00 x 4.90 mm, enhanced by oval-shaped opal cabochons measuring 13.00 x 10.00 x 4.00 mm, 10.00 x 8.00 x 2.90 mm, 10.00 x 8.00 x 3.10 mm, and 12.00 x 9.00 x 3.30 mm, accented by European-cut diamonds weighing a total of approximately 1.00 carat, embellished by round-shaped demantoid garnets weighing a total of approximately 0.60 carat, set in platinum-topped 18k gold. Gross weight 19.51 grams.
    Dimensions: 3 inches x 1-7/8 inch

    Condition Report*: Designer: Benedict Bros.
    Diamond Average Color: G-H-I
    Diamond Average Clarity: SI
    Diamond Shapes: European-cut
    Diamond Count: 26 - 50
    Gem Type: Opal, Demantoid Garnet
    Gem Average Clarity: Good
    Gem Shape: Cabochon, Oval-shaped Cabochon, Round-shaped
    Gem Count: 1 - 25
    Overall Condition: Very Good
    Notes: The piece is accompanied by the original signed Benedict Bros. box and letter from the company concerning the commission of the piece.
    *Heritage Auctions strongly encourages in-person inspection of items by the bidder. Statements by Heritage regarding the condition of objects are for guidance only and should not be relied upon as statements of fact, and do not constitute a representation, warranty, or assumption of liability by Heritage. All lots offered are sold "AS IS".

    Shipping, Taxes, Terms and Bidding
    Calculate Standard Domestic Shipping

    Sales Tax information  |  Terms and Conditions

    Bidding Guidelines and Bid Increments

    Glossary of Terms

    Auction Info

    Auction Dates
    April, 2013
    29th Monday
    Bids + Registered Phone Bidders: 1
    Lot Tracking Activity: N/A
    Page Views: 1,915

    Buyer's Premium per Lot:
    25% on the first $50,000 (minimum $14), plus 20% of any amount between $50,000 and $1,000,000, plus 12% of any amount over $1,000,000 per lot.

    Sold for: Sign-in or Join (free & quick)

    Heritage membership

    Join Now - It's Free

    1. Past Auction Values (prices, photos, full descriptions, etc.)
    2. Bid online
    3. Free Collector newsletter
    4. Want List with instant e-mail notifications
    5. Reduced auction commissions when you resell your
    Consign now
    • Cash Advances
    • More Bidders
    • Trusted Experts
    • Over 200,000 Satisfied Consignors Since 1976 receives more traffic than any other auction house website. (Source:

    Video tutorial

    Getting the most out of search

    Recent auctions

    2014 September 23 Luxury Accessories Signature Auction
    2014 September 23 Luxury Accessories Signature Auction
    REALIZED $2,303,258
    2014 September 22 Fine Jewelry Signature Auction
    2014 September 22 Fine Jewelry Signature Auction
    REALIZED $1,970,300
    Special American Watches
    Special American Watches
    REALIZED $189,844