Omega Gems (Paperback) — made in Spain. With this concise, precise and easy-to-use guide, gemology enthusiasts will be able to identify over 400 gems from…
Omega Gems (Paperback), sold under the Omega brand, is manufactured in Spain. That origin is recorded at the "Brand-Stated" evidence grade.
Omega is headquartered in Switzerland; a brand's home country is not evidence of where its goods are made, and the two are tracked separately.
Origin evidence last reviewed 2026-05-27.
Every origin claim on Hesperia Market is graded by the strength of its evidence and linked to its sources.