3 Jewelling Diamonds
Iron Dog Studio
3 Jewelling Diamonds is a jewel-themed slot by Iron Dog Studio.
The slot is built on a 5x4 reel grid with 20 paylines and offers a theoretical maximum win of x10000x stake.
It also comes with special features such as Hold and Respin and Fixed Jackpot, adding locked-symbol bonus tension and extra jackpot targets alongside regular wins.
Specifications
Characteristic
PREVIEW
User Rating
-
Free Spin
Preview
Jackpot
None
Reel Config
5x4
Paylines
20 Lines
RTP
95.87%
Volatility
-
Max Win
-
Bonus Buy
60x
Demo Play
3 Jewelling Diamonds by Iron Dog Studio
3 Jewelling Diamonds by Iron Dog Studio
Bonus Buy Efficiency
Bonus Buy Analysis
Low Bonus Buy Price
This slot's bonus buy price is below the usual range for comparable slots. That makes buying the feature relatively accessible, especially if you want to try the free-spin round directly. Keep in mind that some games offer multiple free-spin tiers, and SlotWise uses the lowest available buy price as the reference. A lower price may also mean that the free-spin feature itself carries a lighter payout profile than higher-priced games.
Special Features
Wild
Standard Wild
Symbols
Instant Prize Symbol
Pays
Collection Meter
Symbols
Symbol Collector
Spins
Hold and Respin
Reels
Double Game Field
Symbols
Feature Upgrade
Free Spin
Retrigger
Symbols
Multiplier Symbol
Pays
Random Symbol Multiplier
Symbols
Multi-Function Symbol
Jackpot
Fixed Jackpot
Betting
Bonus Buy
Betting
Selectable Hold & Win Modes
Symbols
In-Bonus Symbol Addition
Feature Highlight: Instant Prize Symbol
An Instant Prize Symbol is a special symbol whose role is to pay a set cash value or bet multiplier just by appearing on the reels. The core concept is that it provides a direct reward by its mere presence, without the need to form a winning line like regular symbols. It is often called a 'Coin' or 'Money Symbol' and serves as the most basic 'material' in various bonus features of modern slots.
Feature Highlight: Collection Meter
A Collection Meter is a system where a progress bar or gauge (meter) is present on the game screen, which fills up each time the player collects specific symbols or performs certain actions. The core of this feature is to provide the player with a long-term goal that goes beyond the success/failure of a single spin. When the meter is full, an instant prize or a special bonus is awarded as a reward. This provides players with a growth-type fun, similar to 'leveling up' or 'completing a quest'.
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About Previews
Previews focus on playable demo access, slot specifications, and feature structure before a full 300SPINS™ review is available. They are designed to make the slot easy to inspect and compare, while leaving performance judgments based on actual play sessions to full 300SPINS™ reviews.