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Co Founder Fred Gruen's Gifted 13.73 CTW Diamond Timepiece To His Wife Matilda

Item Details

A rare and distinctive Gruen platinum and 13.73 ctw Diamond stem wind wristwatch. A unique watch that was Matilda Gruen’s personal watch given to her by her husband Fred Gruen. This watch features a contemporary style with an array of 412 diamonds in a variety of cuts throughout. The diamonds surround a Gruen timepiece with black Arabic numerals and is displayed in a platinum case with a diamond encrusted bracelet.

Watchmaker: Gruen
Bezel Metal: Platinum
Case Metal Type: Platinum
Caseback Metal Type: Platinum
Movement: Stem Wind Gruen 305, Signed Dietrich Gruen Precision Extra, 4896

Material: Platinum
Style/Type: Panel
Clasp Style: Jewelry
Bracelet Length: 7.50’

Type: Diamond
Shape: Circular Brilliant Cut
Count: 2
Dimension: 6.90 mm – 7.00 mm
Carat Weight: 2.11 ctw
Color Grade: E – F
Clarity Grade: VS1 – VS2

Type: Diamond
Shape: Marquise Cut
Count: 2
Dimension: 8.75 mm x 5.00 mm – 9.00 mm x 5.00 mm
Carat Weight: 1.45 ctw
Color Grade: F – G
Clarity Grade: SI1 – SI2

Type: Diamond
Shape: Half Moon Step
Count: 4
Dimension: 6.00 mm x 3.75 mm – 6.00 mmx 4.00 mm
Carat Weight: 1.56 ctw
Color Grade: G – H
Clarity Grade: VVS2 – VS2

Type: Diamond
Shape: Baguette Cut
Count: 4
Dimension: 6.50 mm x 2.50 mm
Carat Weight: 1.09 ctw
Color Grade: G – H
Clarity Grade: VVS2 – VS2

Type: Diamond
Shape: French, Single Cut, Swiss
Count: 400
Dimension: 1.00 mm – 2.00 mm
Carat Weight: 7.52 ctw
Color Grade: F – G
Clarity Grade: VS1 – VS2

  • Timekeeping accuracy not guaranteed.
  • This item has been evaluated and verified by an independent Certified Master Electronic Watchmaker and a Graduate Gemologist.
  • EBTH assumes all watches unisex and does not specify the gender of a piece. For size reference, please see the case measurements of the piece listed under Dimensions.
  • All diamond and gemstone grading is done under GIA standards as the mounting permits, where gemstones are present; where mountings impede accurate measurements, (estimated) dimensions are provided. All weights and measurements are estimated and approximate; where mountings impede accurate measurements, a calculated estimate is provided. Industry standard and accepted treatments for gemstones are assumed unless otherwise noted.
  • Secondhand jewelry may contain minor markings/imperfections throughout.
  • While we represent items accurately on our site to the best of our ability, the color calibration of computer monitors can vary, causing colors to appear slightly different from one monitor to another. Due to this, please note that precise color representation of metal and gemstones is not always possible.


- not running at time of evaluation without detailed testing, future state not guaranteed.
- Matilda Gruen’s personal watch.
- total diamond carat weight is 13.73 ctw.
- includes soft pouch.


- lug to lug measurement is 32.00 mm.
- case to case measurement is 11.00 mm.
- the approximate diamond weight is 13.73 ctw.
- the total diamond count is 412.
- the total approximate weight, inclusive of all materials, is 58.10 grams.

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