Game Information
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Provider
Greentube
Type
Slots
Theme
Gem
Release Date
February 22, 2018
Reels
5
RTP
95.08
Volatility
3
Max Exposure
227600
Min Bet
0.01
Max Bet
10
Max Win per Spin
500000
Gemstone Jackpot Slot: Comprehensive Data Analysis
Core Game Specifications
| Attribute | Value |
|---|---|
| Developer | Novomatic (Greentube) |
| Theme | Gemstones, Jewels |
| Layout | 5×3 |
| Paylines | 10 |
| Bet Range | $0.40 to $1000 per spin |
| Core Mechanics | Lock & Spin respin feature, Gamble double‑or‑nothing option |
| Developer | Novomatic (Greentube) |
| Technology | HTML5 |
Mathematical & Payout Model
Return to Player (RTP)
95.08%
Volatility
Low - Medium
Max Win Potential
500000x
Symbols & Paytable Hierarchy
| Tier | Symbol(s) | Function & Value |
|---|---|---|
| High Tier | Diamond, Ruby, Emerald, Sapphire, Amethyst, Orange Diamond, Yellow Diamond | Highest paying symbols. Top hits available with full combinations. |
Gemstone Jackpot Bonus Features Mechanics
| Feature | Trigger | Initial Award | Core Mechanic | Enhancement/Retrigger |
|---|---|---|---|---|
| Lock & Spin | Any winning combination | Locks winning symbols and grants respins until no new matching symbols land | ||
| Gamble | After any win | Guess card color to double winnings |
Frequently Asked Questions (FAQ)
| How many paylines does the game have? | The game has ten fixed paylines. |
| What is the RTP of the game? | The return to player is ninety‑five point zero eight percent. |
| What is the volatility level? | The volatility is low to medium. |
| What is the maximum win multiplier? | The maximum win is five hundred thousand times the bet. |
| What special feature does the game offer? | The game offers a Lock & Spin feature that locks winning symbols and grants respins. |
| Is there a gamble option? | Yes. After any win you can gamble to double your winnings by guessing the color of a card. |
| What is the betting range? | The betting range spans from forty cents to one thousand dollars per spin. |
Gemstone Jackpot Performance Summary: Strengths vs. Weaknesses
Strengths
- Unique Lock & Spin mechanic
- Wide betting range
- High maximum win potential
Weaknesses
- No wild or scatter symbols
- No traditional free spins
Overview
Gemstone Jackpot is a gemstone‑themed video slot with a Lock & Spin feature that locks winning symbols and grants respins until no new matching symbols land. It offers a gamble option and a wide betting range.
Rachel Pine is our slots expert who has worked in the online gambling industry for 10+ years. Over the course of her career, Rachel has reviewed more than 30,000 slots.
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