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CNC (Computerized Numerical Control) milling machines use rotary cutting tools to carve a jewelry model from a blank of gold or platinum. The programming process generates a code which controls the machine to produce the desired product. The number of axes in the machine can vary, three to eleven-axis the most common in the industry to produce zero a porosity jewelry product. According to the functions or types of machined parts, CNC machines can be classified into five types: CNC milling machines, CNC lathes, CNC drilling machines, CNC plasma cutters, and CNC grinders.

Traditional jewelry casting is done through the lost wax process, whereby models created through wax carving, growing, or printing are encased in a plaster - like medium known as investment. Investment is heated to extreme temperatures to burn the material, creating an impression of the desired form. The burned cavity is then filled with melted precious metal.

Diamond Conversion Sizes In Millimeters

Diamond Conversion chart | kozza.com

*Values given above within the “Diamond Conversion Sizes In Millimeters” Chart are approximate.

January Garnet

Birthstones 01 January Garnet | kozza.com


February Amethyst

Birthstones 02 February Amethyst | kozza.com


March Aquamarine

Birthstones 03 March Aquamarine | kozza.com


April Diamond

Birthstones 04 April Diamond | kozza.com


May Emerald

Birthstones 05 May Emerald | kozza.com


June Alexandrite

Birthstones 06 June Alexandrite | kozza.com


July Ruby

Birthstones 07 July Ruby | kozza.com


August Peridot

Birthstones 08 August Peridot | kozza.com


September Sapphire

Birthstones 09 September Sapphire | kozza.com


October Tourmaline

Birthstones 10 October Tourmaline | kozza.com


November Citrine

Birthstones 11 November Citrine | kozza.com


December Tanzanite

Birthstones 12 December Tanzanite | kozza.com


Metal Weight Conversion Factor

Metal Weight Conversion | kozza.com

* Conversion Factors given above within the “Metal Weight Conversion Factor” chart are approximate.

Getting the right finger size is the most important factor for Traditional Wedding Bands.

  • All Kozza & Company rings are sized above the marker line.
  • All Womens’ Wedding Bands are available in sizes 4 to 9.
  • All Mens’ Wedding Bands are available in sizes 4 to 14.
  • 1/2 and 1/4 sizes are available upon request
  • Wider rings tend to fit tighter. Therefore, please consider allowances to prevent any discomfort.
Measure Finger Sizes 6.5 | kozza.com

* Finger Size 6.5

Measure Finger Sizes 8 | kozza.com

* Finger Size 8

Measure Finger Sizes 10 | kozza.com

* Finger Size 10

We offer all finish options illustrated below for most of our Traditional Wedding Bands. Available finish options for each individual model are also illustrated next to those models displayed in this catalog. For any special requests, please inquire with our Customer Service. All images for the finish options in this catalog are for illustrative purposes only, actual results may differ slightly.

Polished Finish | kozza.com


Sand Blast Finish | kozza.com

Sand Blast

Matte Finish | kozza.com


Stardust Finish | kozza.com


Ice Matte Finish | kozza.com

Ice Matte

Hammer Finish | kozza.com


Cross Satin Finish | kozza.com

Cross Satin