Art Deco engagement ring diamond sapphire

Some information:
  Style: Art Deco
  Style specifics: Abstract motives and geometrical forms are quite typical for the Art Deco period.
  Material: 18K bi-color (yellow and white) gold
  Diamonds: One old mine brilliant cut diamond with an estimated weight of approx. 0.05 crt. and six old mine brilliant cut diamonds with a total estimated weight of approx. 0.06 crt. Note: All diamond weights, color grades and clarity are approximate since the stones were not removed from their mounts to preserve the integrity of the setting.
  Total diamond weight: approx. 0.11 crt.
  Precious stones: 4 sapphires
  Birthstones: Diamond is the birthstone (or month stone) for April and sapphire for September.
  Hallmarks: No trace.
  Weight: 1.60 gram (1.03 dwt)
  Ring size Continental: 54 & 17¼ , Size US 6¾ , Size UK: N
  Resizing: Free resizing (only for extreme resizing we have to charge).

      An engagement ring is in Western tradition of no generally accepted form, worn by a woman indicating her engagement to be married. Conventionally, the ring is presented as a betrothal gift by a man to his prospective bride while he proposes marriage or directly after she accepts his marriage proposal. It represents a formal agreement to future marriage.

     In recent years such rings have normally been set with a gemstone, usually a diamond, as a solitaire, of varying sizes, cuts, styles, and cost, but in the 19th century some were set with a pearl. In the same century the custom arose in England of separate engagement ring and wedding ring, and in very recent years such rings have sometimes been made en suite as a matching pair of similar style. In recent years, antique gemstone engagement rings are rapidly gaining in popularity.

     In some countries, such as the United States and the United Kingdom, it is worn on the left-hand ring finger, while in other countries, such as Poland and Ukraine, it is customary for the ring to be worn on the right-hand. Similar traditions purportedly date to classical times, dating back from an early usage reportedly referring to the fourth finger of the left hand as containing the vena amoris or "vein of love". In the United States and Canada today it is becoming more common, but still quite rare, that a woman will also buy her partner an engagement ring (also called a pre-engagement ring, promise ring, or 'mangagement' ring) at the time of the engagement.