Ownership
Unless otherwise stated, all content on this website—including text, photographs, graphics, layouts, course materials summaries, report imagery, and audiovisual assets—is owned by GUILD or used under license. Unauthorized reproduction, distribution, modification, or commercial exploitation is prohibited.
Trademarks
“GUILD”, “GUILD Gem Laboratories”, “GUILD Institute of Gemology”, the GUILD logo, and related brand elements are trademarks or trade names of GUILD. No license to use these marks is granted by browsing this website, except as expressly described in the logo usage standards below or in a separate written agreement.
Reports, certificates, and references
A GUILD report or certificate may be shown by its rightful holder for authenticity and disclosure purposes, provided the document is presented intact and not altered. Using GUILD marks to imply endorsement of a product, business, or marketing claim requires prior written authorization.
Reporting misuse
If you become aware of unauthorized use of GUILD trademarks, logos, report formats, or copyrighted materials, please contact info{'@'}guildgemlab.com with supporting details.
Brand identity
Logo history
GUILD has updated its logo only once. The founding mark was used from 1980 through 2025; the current identity has been in use since 2025.
Archived
CurrentUsage standards
Logo use guidelines
Third parties may refer to GUILD factually, but reproduction of the logo must follow these standards. Use only the official files listed below in the approved layout and finish for the background.
Layouts
- Horizontal — Default for headers, certificates, websites, and wide formats.
- Vertical — For narrow columns, square placements, packing, and stacked applications.
- Emblem — For favicon-scale uses, watermark placements, and cases where the wordmark is already adjacent.
Color finishes
- Dark — Full-color crest with dark wordmark — use on light or white backgrounds.
- Light — Full-color crest with light wordmark — use on dark or photographic backgrounds.
- Color — Full-color crest (vertical or emblem) — default color presentation.
- White — Single-color white version — use on dark backgrounds or monochrome reverse production.
- Black — Single-color black version — use on light backgrounds, engraving, foil, and restricted print.
Official inventory includes horizontal, vertical, and emblem files — seven approved assets in total. Choose layout for the space and finish for the background. Do not invent additional colorways or rebuild lockups.
Horizontal Landscape lockup
Vertical Stacked lockup
Emblem Crest only
Do
- Use only the official GUILD logo files listed on this page
- Match finish to background: Dark/Color/Black on light; Light/White on dark
- Keep horizontal, vertical, and emblem formats intact — do not rebuild them
- Maintain clear space around the logo equal to at least the height of the letter “G”
- Credit GUILD accurately when referencing laboratory reports or education programs
Do not
- Do not stretch, skew, rotate, outline, or otherwise distort the logo
- Do not recolor, add gradients, shadows, glows, or decorative effects
- Do not convert a horizontal logo into a homemade vertical lockup (or vice versa)
- Do not place the logo on busy imagery that reduces contrast or clarity
- Do not use the logo to imply partnership, endorsement, or certification where none exists
Clear space
Keep the area around the logo free of text, graphics, and edges. As a minimum, reserve clear space equal to the cap-height of the “G” on all sides.
Minimum size
Do not reproduce the horizontal logo smaller than approximately 96 px wide in digital use, or 24 mm wide in print. Keep vertical and emblem versions large enough that every detail remains crisp.
Approved files
Horizontal: logo-dark.png, logo-light.png, logo-white.png. Vertical: logo_vertical.png, logo_vertical_black.png, logo_vertical_white.png. Emblem: logo-only.png.
Permissions
Media, partners, educators, and vendors seeking logo files or co-branded usage must obtain prior written permission from GUILD.
To request logo files, usage approval, or clarification of these standards, contact info@guildgemlab.com