Pet food brand

C

Diamond

C Average score: 69/100 (Average)

Discover the 2 Diamond products graded A to E by PetFoodRate. Our independent analysis covers protein quality, nutritional value, absence of undesirables, label transparency, and species adaptability.

In short

Diamond averages 69/100 (C) across 2 graded products, 1 of them A or B. It is strongest on "Few undesirables" and weakest on "Species fit". Top-rated product: Diamond Nutragold (77/100).

By Theo Blanchard · reviewed by Max Kowalski · updated June 2026 · independent grading, no sponsorship

A
0
B
1
C
1
D
0
E
0

The Diamond profile across 5 criteria

Average of the A–E sub-scores across the 2 graded Diamond products. The brand is strongest on "Few undesirables" and weakest on "Species fit".

  • Protein quality C · 60/100
  • Nutritional balance B · 75/100
  • Few undesirables A · 90/100
  • Ingredient transparency C · 60/100
  • Species fit C · 60/100

All Diamond products graded

#1
B 77
Nutragold
dry food cats
#2
C 60
Maintenance cat
dry food cats

Our verdict on Diamond

Diamond offers 2 products in our database, covering 1 food type and 1 species. The brand average score is 69/100, a grade C (Average). This score evolves whenever we add products or update our methodology.

Understand the grade

Keep exploring

All brands Compare pet food brands Best by category Top by species and type Compare 2 products Side by side, grade by grade

Frequently asked questions

How many Diamond products are rated?

2 Diamond products are rated by PetFoodRate, with an average score of 69/100 (C).

What is the best Diamond product?

The highest-rated Diamond product in our database is Diamond Nutragold (grade B).

Is Diamond a good brand?

Based on its rated products, Diamond averages 69/100, i.e. C on our A to E scale. Quality can vary across ranges: check each product's grade.

How does PetFoodRate rate brands?

Each product is graded A to E on five axes (proteins, nutrition, undesirables, transparency, suitability). A brand's score is the average of its products; only brands with at least 10 rated products enter the comparative ranking.