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Lambert Bros. Diamond Platinum Engagement Ring


A signed Lambert Brothers platinum engagement ring features a sparkling old European cut diamond of an approximate .40 carats (J-K color; SI1 clarity). Flanking each side is a cartouche containing three (3) single cut diamonds. Engraved to the interior is “L.M.N. to A.P.N.”.

Date: Circa 1935.

+ Measurements, Condition & More

Measurements: 1/4 of an inch (0.6 cm) in length north to south on the hand and rises 1/4 of an inch (0.6 cm) in height off the finger. Weight of 3.5 grams (2.3 dwt).

Ring Size: US 6 1/2 (UK M 1/2; Euro or Int. Circum. 53.1 mm; Int. Dia. 16.9 mm; Japan 13) and can be easily sized to fit most. Ring sizing information.

Hallmarks: Lambert Bros. and Platinum.

Condition: Excellent; some edge wear to the main diamond visible with magnification.

Origin: American.

Note: Diamonds were not removed to preserve the integrity of the setting. Weights are approximated by measurement and formula and may vary from actual weights. Grading may vary if stones are removed.

Historical Notes: Founded in 1877 by August V. Lambert, the jewelry house of Lambert Bros. was located on the southwest corner of Third Avenue and 58th Street. Around 1930 construction of a new store at the northeast corner of Lexington and 60th Street was completed. A magnificent, four-faced gold clock outside their jewelry store was erected shortly after the building was completed to advertise the shop. Moving again around 1968, Lambert Brothers Jewelry was now at 545 Madison Avenue at 55th Street where it remained until 1978 when Victor Lambert sold the company to the Zale Corporation. The clock was removed and placed in storage. Shortly thereafter, Victor made headlines by buying the $3 million 69.42 carat diamond that Richard Burton had given to Elizabeth Taylor.

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Other Forms of Payment
Bank Wire - For international orders and orders of $5,000 and over. Please contact us for more details.

Layaway information and for full details see Payment Methods.


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If you are not completely satisfied with your purchase, notify us within (3) days of receipt for a full refund. Return shipping is free!


Just write "extended return" in the comments box of your order to qualify! Notify us by December 29th, ship back by January 2nd, 2015.

Standard Return Procedure

  1. Notify us of your intention to return the item within three (3) days of receipt. You may contact us by email or by telephone.
  2. Please ship back to us within another two (2) days after we receive notification from you.
  3. As soon as the item is received, a full refund is issued to you that same day.

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