Semper Fi

Gemstone Quality Standard

About Semper Fi

Semper Fi is a stone containing Black Tourmaline, Epidote, Orthoclase, and Axinite. It originates from a Skarn area where Gemrock did some crystal mining in 2021. There is a black and white color version and a green version.

Rarity

Semper Fi is from Peru

Availability

We don’t know how big the natural reserve of Semper Fi is. We are offering it as preselected cabochon material (slabs), as cabochons, and in our jewelry.

Ethical mining

Semper Fi is not mined but hand-collected (rockhounding). No dynamite or chemicals are used. Habitat destruction does not occur.

You can buy our finished top-quality cabochons for jewelry makers.

National and international shipping from our US-based warehouse.

Buy your Semper Fi Cabochons here

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Color

Semper Fi comes in two colorations

Black and white:

Black Tourmaline and Axinite in orthoclase

Green:

Black Tourmaline, Epidote and Axinite in orthoclase

Pricing

Adequate pricing must take into account the cost factors to obtain top-quality cabochons:

Selection of jewelry-grade material and discarding 50 percent of the rough rock as unsuitable for jewelry.
A usual material loss of approximately 90 % of the selected material during the cutting and shaping process.
The level of experience required by a cutter to produce a flawlessly shaped and highly polished cabochon.

You can buy our finished top-quality cabochons for jewelry makers.

National and international shipping from our US-based warehouse.

Buy your Semper Fi Cabochons here

Jewelry-grade Material:

Mottled black and white material or green version with additional epidote.

Cutting Quality:

Straight bezel (minor irregularities possible), 3 mm high
Perfect dome (3-5 mm high)
Edges between bezel and dome, as well as bezel and backside: sharp and crispy, minor chips on lower edge possible
Backside flat at 280 grit, unpolished

Pricing:

Recommended Retail Price (A): 0.39 USD per carat

Jewelry-grade Material:

Mottled black and white material or green version with additional epidote.

Cutting Quality:

Straight bezel, 3 mm high
Flat and perfect dome (3 mm high)
Edges between bezel and dome, as well as bezel and backside: sharp and crispy, minor chips on lower edge possible but very rare.
Backside flat, at 280 grit

Additional Quality (AA+): Backside polished to 3000 grit

Pricing:

Recommended Retail Price (AA): 0.69 USD per carat

AA+: 0.79 USD/c

Jewelry-grade Material:

Mottled black and white material or green version with additional epidote.

Cutting Quality:

Only cut by our best master-cutters
Straight bezel, 3 mm high
Flat and perfect dome (1-3 mm high)
The Edges between the bezel and dome, as well as the bezel and backside: sharp and crispy, no chips on lower edge.

Additional Quality (AAA+): Backside polished to 3000 grit

Pricing:

Recommended Retail Price (AAA): 0.99 USD per carat

AAA+: 1.09 USD/c

To the best of our knowledge, we are the only ones offering this material.

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Cutting services

Do you need reliable high-quality cutting services for a reasonable price? Are you looking for a service provider that is willing to develop new products according to your requirements? Would you like to get expert advice in order to improve your product? Do you wish for someone to optimize the process and get the most out of your rough? Just talk to us.