Aiya vs Marukyu-Koyamaen
This 2026 comparison covers Aiya and Marukyu-Koyamaen across price, testing transparency, heavy metal disclosure, and organic certification. Both brands are priced within 5% of each other per gram, so price is not a meaningful differentiator here.
At a Glance
- Origin
- Not disclosed
- Grade
- Culinary
- Price per gram
- $1.17/g
- Organic
- ORGANIC
- Testing
- No public testing information found
- Last verified
- June 27, 2026
Marukyu-Koyamaen
- Origin
- Uji, Japan
- Grade
- Ceremonial
- Price per gram
- $1.13/g
- Organic
- Not certified
- Testing
- No public testing information found
- Last verified
- June 24, 2026
Key Differences
Origin
Not enough informationAiya
Not disclosed
Marukyu-Koyamaen
Uji, Japan
Marukyu-Koyamaen discloses its origin. The other brand has not publicly disclosed its leaf origin.
Organic certification
CertifiedAiya
ORGANIC
Marukyu-Koyamaen
Not certified
Aiya holds organic certification. Marukyu-Koyamaen does not have a publicly confirmed organic certification.
Testing transparency
More transparentAiya
No public testing information found
Marukyu-Koyamaen
No public testing information found
Marukyu-Koyamaen discloses more testing information. Lower transparency tier means more public disclosure.
Which Should You Choose?
Choose Aiya if:
- Organic certification matters to you
Choose Marukyu-Koyamaen if:
- Testing transparency is important to you
Heavy Metal Testing
Aiya
No published numeric heavy metal results found.
Last checked June 27, 2026.
Marukyu-Koyamaen
No published numeric heavy metal results found.
Last checked June 24, 2026.
Source: brand-published COAs and independent test results. Values are from specific batches and dates. The absence of published data does not indicate safety or danger. Last verified: Aiya June 27, 2026, Marukyu-Koyamaen June 24, 2026.
Full Comparison
| Attribute | Aiya | Marukyu-Koyamaen |
|---|---|---|
| Origin and Production | ||
Origin | -- | Uji, Japan |
Grade | Culinary | Ceremonial |
Country | -- | Japan |
Region | -- | Uji |
| Price and Value | ||
Price per gram? | $1.17/g | $1.13/g |
Price as of | 2026-06-27 | 2026-06 |
| Organic Certification | ||
Organic status | ORGANIC | -- |
| Testing and Transparency | ||
Testing transparency | -- | -- |
Publishes numeric lab results | -- | -- |
Third-party testing disclosed | -- | -- |
Pesticide testing | -- | -- |
Published lead test result | No published results found (checked June 27, 2026) | No published results found (checked June 24, 2026) |
Published cadmium test result | No published results found (checked June 27, 2026) | No published results found (checked June 24, 2026) |
Published arsenic test result | No published results found (checked June 27, 2026) | No published results found (checked June 24, 2026) |
Published mercury test result | No published results found (checked June 27, 2026) | No published results found (checked June 24, 2026) |
Last verified | June 27, 2026 | June 24, 2026 |
Frequently Asked Questions
Related comparisons
All data in this comparison is sourced from publicly available COAs, brand websites, and independent test results. Every safety data point carries its source and last-verified date. Steady Matcha does not conduct or claim ownership of third-party test results for other brands. Brand information changes: verify current status before purchasing.