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Vintage & Antique Engagement Rings Platt Boutique Jewelry Los Angeles
Victorian Star Sapphire & Rose Cut Diamond Brooch by Koch
Victorian Star Sapphire & Rose Cut Diamond Brooch by Koch
Victorian Star Sapphire & Rose Cut Diamond Brooch by Koch
Victorian Star Sapphire & Rose Cut Diamond Brooch by Koch
Victorian Star Sapphire & Rose Cut Diamond Brooch by Koch
Victorian Star Sapphire & Rose Cut Diamond Brooch by Koch
Victorian Star Sapphire & Rose Cut Diamond Brooch by Koch

Victorian Star Sapphire & Rose Cut Diamond Brooch by Koch

$6,900.00
German Victorian Star Sapphire & Rose Cut Diamond Brooch by Koch, composed of 18k gold and silver. The brooch has a styling reminiscent of the 'Halley's Comet' motif. This brooch features 3 light bluish-periwinkle Cabochon star sapphires that weigh approximately 10.55 carats in total, with beautiful asterism. The brooch also features 127 Rose Cut diamonds that weigh approximately 0.75 carats in total. The brooch measures approximately 4" long by 1/2" wide at the top and 1.8 mm wide at the bottom tip; weighs 19.4 grams. Stamped 'KOCH'; German origin. Circa 1890.

The historic fine jewelry house of Robert and Louis Koch was founded in Frankfurt, Germany, in 1879 and was known for its exceptional craftsmanship. Koch was the appointed jeweler to the court in 1883, and the firm expanded by opening a strategic boutique in the fashionable spa resort of Baden-Baden. They served high European nobility and royalty, including the German imperial family, the Russian Tsar, the King of Italy, and the Prince of Wales.


Metals: 18k Gold & Silver
Origin: German
Stones: 10.55 Ctw. Cabochon Star Sapphires; 0.75 Ctw. Rose Cut Diamonds
Size: Measures approximately 4" long by 1/2" wide
Weight: 19.4 Grams

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Complimentary ring resizing with purchase

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Step One: Choose Your Piece

Once you have found the piece of jewelry you want, make sure you act quickly because once it’s gone, it’s gone. If you need more photos or information about the ring or simply have any questions, don’t hesitate to [link: contact us] and we would be more than happy to help. Once payment is received, we will start getting you piece of jewelry ready for shipping. If your ring requires resizing please allow extra time.

Step Two: It’s Time to Ship

Each piece of jewelry is shipped complimentary (within the US), fully insured and overnight. We ship Tuesday through to Saturday. Please note that the billing address for the card used to purchase your ring and the shipping address must match. An adult signature is required upon delivery.

Step Three: It’s Arrived!

We hope you love you piece of jewelry! Don’t forget we offer a 7 day money back guarantee, so if you are not satisfied, simply contact us and we will take care of it from there. This does not apply to custom orders, such as bands that are made to order and custom rings.

It’s so easy, exciting and risk-free to shop at Platt Boutique Jewelry. If you have any other questions about the process, feel free to contact us and we are more than happy to help you.

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