Written by Acorn Sales Company, manufacturing stamps and seals since 1964 · Reviewed by Holly R, VP of Sales and Marketing at Acorn Sales, against no board: Guam does not register or license geologists and 22 GCA ch. 32, §§ 32103, 32116(d) (no mention of geologists) on 21 September 2026 · Updated 21 September 2026
Guam does not register, license or certify geologists, so no Guam rule prescribes anything about a geologist seal. The territory has one design profession statute, the Professional Engineers, Architects and Land Surveyors Law at 22 GCA ch. 32, and it registers professional engineers, registered architects, registered landscape architects and professional land surveyors. Geologists are absent from the definitions at § 32103 and from the shared seal section at § 32116(d). There is no credential here to seal with.
Nothing is prescribed, so the design is yours. One limit still applies, and it is about wording rather than shape. There is no required diameter, no required legend and no approved artwork, so a stamp is a design decision rather than a compliance one. Acorn will cut it to whatever you want on it: your own name, your firm name, a monogram, your logo, or a geologist credential you actually hold from a jurisdiction that issues one.
One thing to steer around, because it is recognizable on Guam. A registrant’s seal block under § 32116(d) pairs a professional designation and a registration number with the handwritten statement “This work was prepared by me or under my responsible control.” Do not build that block onto a geology device. Put your own name, your firm name, and any credential you actually hold, named with the jurisdiction that issued it. Leave off “Licensed” and “Registered” and any government-issued title unless a government issued you one, because that is the part some places do restrict.
Guam geologist seal requirements at a glance
| Requirement | Guam rule | Source |
|---|---|---|
| Seal required | Not licensed here | 22 GCA ch. 32, §§ 32103, 32116(d) (no mention of geologists) |
| Required elements | Not applicable: Guam issues no geologist credential and prescribes no geologist seal | 22 GCA ch. 32 |
| Size and shape | Not applicable. | 22 GCA ch. 32 |
| Device allowed | Not applicable. | 22 GCA ch. 32 |
| Signature and date | Not applicable. | 22 GCA ch. 32 |
| What must be sealed | No Guam document requires a geologist’s seal. | 22 GCA § 32116(d) |
| Electronic seal | Not applicable. | 22 GCA § 32116(d) |
| Renewal and lapse | Not applicable. | 22 GCA ch. 32 |
| Firm requirements | Not applicable. | 22 GCA ch. 32 |
| Regulator | No board: Guam does not register or license geologists | 22 GCA (Business Regulations) ch. 32, The Professional Engineers, Architects and Land Surveyors Law, §§ 32103 and 32116(d), read from the PDF published by the Guam Board of Registration for Professional Engineers, Architects and Land Surveyors at guam-peals.org, which mentions neither geologists nor interior designers |
Is a seal required in Guam?
Guam does not register, license or certify geologists, and no Guam agency issues a geologist’s seal. The Professional Engineers, Architects and Land Surveyors Law at 22 GCA ch. 32 registers professional engineers, registered architects, registered landscape architects and professional land surveyors, and the chapter does not mention geologists at any point, including in the definitions at § 32103 and the shared seal section at § 32116(d). There is no credential to seal with.
What must appear on the seal
- Not applicable: Guam issues no geologist credential and prescribes no geologist seal
Nothing is prescribed because nothing is regulated. A geologist working on Guam may use a firm stamp or an out-of-jurisdiction credential stamp, and no Guam element list governs it. Avoid a die that pairs a professional designation and a registration number with the statutory certification sentence This work was prepared by me or under my responsible control, which is the recognizable form of a Guam registrant’s seal block.
Size and shape
Not applicable. Guam prescribes no geologist seal and therefore no dimension. The sources here are 22 GCA ch. 32 §§ 32103 and 32116(d) and found no reference to geologists.
Embosser, rubber stamp or digital
Not applicable. With no Guam geologist credential there is no required instrument. Where geological work reaches a regulated Guam submittal, the seal belongs to a professional engineer of the appropriate branch under 22 GCA § 32116(d), and that registrant carries the responsibility.
Signing and dating
Not applicable. No Guam law prescribes a signature or date for a geologist, because no Guam law prescribes a geologist seal.
No geologist credential, and a seal block that refuses anything computer-generated
Guam’s single design-profession statute, 22 GCA ch. 32, registers engineers, architects, landscape architects and land surveyors. Geologists are absent from the definitions at § 32103 and from the shared seal section at § 32116(d). There is no Guam professional geologist and no Guam geologist seal.
Which documents must be sealed
No Guam document requires a geologist’s seal. Geological content reaching a regulated submittal travels under an engineer’s seal, and Guam’s seal package is demanding: the registrant’s handwritten signature and date adjacent to the seal with the statement “This work was prepared by me or under my responsible control”, and no facsimile or computer-generated signature or date.
Electronic and digital seals
Not applicable. No electronic seal standard exists for a profession the territory does not regulate, and Guam refuses computer-generated signatures and dates even for the professions it does register.
Renewal, lapse and retirement
Not applicable. There is no Guam geologist credential to renew, lapse, retire or revoke.
Firm requirements
Not applicable. Guam registers no geology firms and issues no certificate of authorization for geological services.
What to check before you order
There is nothing for a Guam geologist seal to comply with, because the territory registers no geologists. Do not order a device pairing a professional designation and a registration number with the statutory sentence This work was prepared by me or under my responsible control; that block belongs to the four professions 22 GCA ch. 32 registers. If you hold a geologist license from a jurisdiction that does issue one, order that jurisdiction’s seal to its own specification and use it only for work there. If you are also registered on Guam as a professional engineer, get the Board’s authorized design for that credential and keep the two separate.
Browse geologist stamps and seals.
Frequently asked questions
Does Guam require a geologist to have a seal?
No, and it could not, because it issues no credential to put on one. 22 GCA ch. 32 is the territory’s design profession statute and it does not mention geologists at any point, including in the definitions at § 32103 and the shared seal section at § 32116(d).
Is there a Guam geologist board?
There is not. The Guam Board of Registration for Professional Engineers, Architects and Land Surveyors administers the four credentials its statute creates, and geology is not among them. With no board there is no registration number, no authorized design and no filing step.
What can I put on a geologist stamp for Guam work?
Whatever is true of you. Your name as you use it professionally, your firm name, contact details, a monogram or logo, and the exact name of any geologist credential you hold with the jurisdiction that issued it named alongside. Since nothing is prescribed, a round die, an oval, a square and a rectangular text block are equally acceptable and the choice is yours on looks and legibility.
What should I keep off it?
The registrant’s seal block. Avoid a die that pairs a professional designation and a registration number with the statutory sentence “This work was prepared by me or under my responsible control,” which is the recognizable form of a Guam registrant’s seal block under § 32116(d). Naming your own credential and its issuing jurisdiction in plain words carries no such implication.
What size and shape should it be?
Any size and any shape, because Guam prescribes no geologist seal and therefore no dimension. Most people ordering one land between 1-1/2 and 2 inches for a round die, or around 2-1/2 by 1 inch for a rectangular name and firm block, purely because those read well on a report page.
Who seals geological content on a regulated Guam submittal?
A professional engineer of the appropriate branch, under 22 GCA § 32116(d). Your geological work travels into that sealed instrument as supporting material, and the registrant who seals it carries the responsibility.
Can a Guam engineer finish a geotechnical report entirely on screen?
No, and this is worth knowing if you work with one. Section 32116(d) requires the registrant’s handwritten signature and date adjacent to the seal with the statement “This work was prepared by me or under my responsible control,” and provides that “A facsimile signature will not be acceptable. Computer-generated signatures and dates are not acceptable.” Build a wet-ink step into the schedule.
Does Guam have an electronic seal standard for geologists?
No electronic seal standard exists for a profession the territory does not regulate, and Guam refuses computer-generated signatures and dates even for the four professions it does register. So a graphic of your own stamp in a PDF is governed by nothing but your own practice, and it carries no territorial authority.
Does a geology firm need a Guam registration?
No. Guam registers no geology firms and issues no certificate of authorization for geological services. The entity credentials in this space belong to the four professions 22 GCA ch. 32 registers.
I hold a geologist license from another state. Can I use that seal here?
It is that state’s device carrying that state’s authority, and it fits into no Guam scheme because Guam has none for geology. Order it to its own specification and use it for that state’s work. If you are also registered on Guam as a professional engineer, get the Board’s authorized design for that credential and keep the two devices separate.
