With the introduction of the newest Grow A Garden pet egg; the Gem Egg, we got six brand new pets, and within those pets, we have two pets with the rarity of a 0.5% chance, which is the first time we’ve seen two super rare pets within an egg, with the same percentage chance.
I’ve already done a complete guide on the super useful Ruby Squid, and the Diamond Panther is the other 0.5% chance pet, within the Gem Egg, and it has a kinda complicated ability. Keep on reading to find out all about it…

What Is The Grow A Garden Diamond Panther Pet?
Inside the Gem Egg, these are the six gemstone-themed pets you can potentially hatch:
- Topaz Snail – 44.78% chance
- Amethyst Beetle – 31.84% chance
- Emerald Snake – 13.93% chance
- Sapphire Macaw – 8.46% chance
- Ruby Squid – 0.5% chance
- Diamond Panther – 0.5% chance
The Ruby Squid and the Diamond Panther have the same 0.5% chance, but I’ve hatched way more Diamond Panthers than I have Ruby Squids.
With the Diamond Panther, it has a silver iridescent effect, just like the rest of the pets within the Gem Egg, and it has little white animated sparkles surrounding it.
The design is very similar to the Tiger, with the same shape tail, without the goofy teeth the Tiger has.

When it comes to the ability of the Diamond Panther, it’s unlike anything else we have within the game.
For my age 1 Diamond Panther, at a hatch weight of 2.77kg (thank you Brontos), the ability is:
“When harvesting a fruit with 12 or more mutations: 3.28% chance for random pet to age up by 1! (Max 30%)“
You need to farm mutations on plants within your gardens, and not harvesting anything until everything (or almost everything) has at least 12 mutations.

When you harvest a single fruit with 12 mutations (or more), there’s a 3.28% chance that the Diamond Panther will age a random pet by 1 level.
With my Diamond Panther having the Nightmare mutation, and being age 100, the description now reads:
“When harvesting a fruit with 12 or more mutations: 6% chance for random pet to age up by 1! (Max 30%)“
6% is the max chance each Diamond Panther can give you.
The key thing here, is ensuring you have a pet equipped in your garden, that isn’t already age 100, and the panther cannot age itself, so your loadout needs to be your Panther, your non-age 100 pet, and ideally, Giant Ants, Red Ants or Cape Buffalo, as the latter will give you the chance to duplicate each fruit you harvest, thus duplicating the chance to age up your pet with another level.

How Does The Grow A Garden Diamond Panther Pet Actually Work?
To set up my garden for this guide, I equipped the following pets overnight: 2 x Tigers, 1 x 15-Second Peacock, 2 x T-Rex, 1 x Kappa, 1 x Wolf and 1 Spider.
I mostly have Sugar Apples planted in my “event” garden right now, for the Smithing Event, and when I woke up this morning, every single Sugar Apple had 12 mutations on them. Don’t plant masses of different plants/trees if you’re going AFK to do this, as it’ll take much longer for all of the fruits to get the 12 mutations.
For the purpose of this guide, I didn’t use any duplication pets (like the aforementioned Giant Ants, Red Ants and Cape Buffalo), so I used my Nightmare Diamond Panther, which I’d aged up to 100 with my French Fry Ferrets, so it was now age 100 and 27.67kg.
I only had two pets placed in my garden: 1 x Nightmare Diamond Panther and 1 x Geode Turtle (age 1).
I manually harvested each fruit, rather than using the Harvest Tool, so I could see how often the level-up in age happened.
Remember, Ruby Squid’s ability, is that it can copy the passive ability of another pet in your garden, and it works with Diamond Panthers, so if you equip a Diamond Panther and a Ruby Squid, it will essentially be like having two Diamond Panthers equipped at the same time.

This is the pop-up message you get, to let you know the Diamond Panther has aged up a pet, so you know if the level-up has triggered.
I like that it has emojis, and tells you which pet, so you’re less likely to miss the message, when it pop-ups up.

I harvested every single one of my Sugar Apples, and I had roughly 40 seeds planted, and you get 6 Sugar Apples on each tree, which is roughly 240 Sugar Apples, all of which had 12 mutations as a minimum.
The final age of my Geode Turtle was age 40 – it started on age 1, so I gained 39 ages from the 240 apples (and a Burning Bud and Grape in the background).
If we just count the Sugar Apples, that works out at 240 divided by 39 (the years my Geode Turtle gained), and it ends up being, roughly, 6.15 fruits per age level.
Amazingly, that is spot-on with what the description says for an age 100 Nightmare Diamond Panther:
“When harvesting a fruit with 12 or more mutations: 6% chance for random pet to age up by 1! (Max 30%)”
It is a great way to age your pets, if you don’t have a high-level age up set-up with the higher tier pets. It was amazing to go from age 1 to age 40 in around 4 minutes total for manual harvesting everything.
That is obviously quicker than any French Fry Ferret army can do, even if you teamed them with a 15-second titanic Peacock.
You do have to wait for everything to get mutated with 12+ mutations though, and that’s the long-winded part.
However, if you are clearing out your garden for new events, and harvesting everything, it makes sense to use Diamond Panthers and pets you want to age up, as it’s literally free levels for you to use, without needing Levelup Lollipops.
