Roto Grip

Roto Grip Magic Gem Bowling Ball

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  • Roto Grip Magic Gem Bowling Ball
  • Roto Grip Magic Gem Bowling Ball
  • Roto Grip Magic Gem Bowling Ball - Defiant Core
MSRP: $242.95
— You save $43.00


Roto Grip Magic Gem Bowling Ball

  • Color: Citrine/Rhodonite/Jet
  • Coverstock: MicroTrax Hybrid Reactive
  • Weight Block: Defiant LRG Core
  • Factory Finish: 2000-grit Abralon
  • Flare Potential: High
  • Radius of Gyration (RG): 16lbs - 2.47; 15lbs - 2.47; 14lbs - 2.50
  • Differential (Diff): 16lbs - 0.051; 15lbs - 0.053; 14lbs - 0.052
  • Intermediate Differential (Diff): 16lbs - 0.016; 15lbs - 0.016; 14lbs - 0.015
  • Fragrance: N/A

Additional product information:


Given the overwhelming success of the GEM and Exotic GEM around the globe, we felt it was important to add another viable reaction to this series of balls. So with that direction in mind, we went to work testing various coverstock materials and ultimately circled back to the often imitated, never duplicated MicroTrax material which features nanoparticles mixed evenly throughout the entire ball just like the solid and the pearl before it.

However, this go round we opted to go down the avenue of hybrid in order to compliment both the solid and the pearl. So with that, we tested all the various combinations of hybrid, and in the end, the 2pt pearl / 1pt solid presented the most performance while complimenting both the GEM and Exotic GEM without overlapping either of them.

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Additional Information

Lane Condition:
Factory Finish:
Reacta Gloss
Core Type:
Hybrid Reactive
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39 Reviews

  • 5
    Magic Gem Review

    Posted by Sandra McIntire on Mar 11th 2024

    I am a higher speed, rev challenged 220-250ish, high tilt, high rotation, and super low track player. I drilled the Roto Grip Magic Gem  5 x 3 x 2 using Storm VLS and my axis point is 3 ¼ right and 7/8 up. The Roto Grip Magic Gem is an asymmetric Hybrid reactive piece that I really like medium/high volume patterns. The low RG and big diff gives this ball high flare potential when I need something to be revving, strong, and continuous.

  • 5
    Magic Gem

    Posted by Casey Mattingly on Mar 6th 2024

    This one is my Favorite of the Gem’s!! This ball allowed me to see a motion that fit my eyes better. The OG Gem was too roll-y for me and the exotic was either too quick or it didn’t see it. The Magic Gem, for me gives me that perfect, in between, motion that isn’t too early, reads the lane how I want, and provides the down lane motion. It kind of makes sense being the Gem was a solid and the Exotic was a pearl. I actually drilled two of these. I drilled one that’s perfect for when I need traction when the lanes are slick. I also drilled one that’s a little later and a little more angular. These 2 Magic Gems work really well together too. I keep one of them scuffed with a 1000 pad, the layout for that one is 4.5x4x2. The cleaner, more angular one is 5.25x5x1.5 and has Reacta Gloss on it. I don’t use them much at my center because of the built in hook from the wood lanes, but they always make the bag when I travel! Layouts for the Magic Gem: 4.5x4x2 (1000 grit) 5.25x5x1 (polish) Balls Currently getting play: Absolute Power: 5x4x2 Attention Star: 5x4x2 Zen Gold Label- 5x5x2 (pin up) box surface Zen Gold Label- 4.5x4.5x3.75 (pin down) 3k surface

  • 5
    Warning! This ball needs oil!

    Posted by andrew smith on Mar 5th 2024

    The Magic Gem features the Defiant LRG Core wrapped in the Microtrax hybrid cover. Let’s get straight to the point this ball needs oil! The Gem series has been some of the strongest to hit the market and the Magic is no different. It fits right in between the original Gem and Exotic. Still has the strong mid lane read with some continuation due to the pearl additive. This ball would suite speed dominant and lower rev players perfectly! Where my Reality isn’t strong enough and doesn’t quite turn the corner on longer patterns the Magic Digs right through it no problem! Be cautious, this ball isn’t made for regular conditions. You may need to polish it up a bit to use on traditional league conditions. I promise there’s no stronger options other than a Gem! Andrew Smith Storm staff LH Rev rate 420+ Speed 16.5

  • 5
    Magic Gem is magical

    Posted by Carol Teel on Feb 19th 2024

    Weight: 14 lbs. Pin Length: 3-3.5” Drilling: 50 x 4-1/4 x 55 Drilling VLS: 5-3/4 x 3-5/8 x 2 Pattern Length: 41 ft. Pattern Volume: Medium Pattern Type: THS Right Handed The Magic Gem has the Micro Trax hybrid cover stock. A combo of the proven Micro Trax solid and Micro Trax pearl cover stocks. This is an Asymmetrical ball in the Roto Grip HP4 line of balls. The box finish is 2000 grit abralon . As always, the surface can be altered to suit a variety of lane conditions. It is an eye catching Citrine/Rhodonite/Jet color. I have used the Magic Gem on a 41 ft. kegel house pattern, and a variety of patterns in different houses. I’ve thrown the Magic Gem at the 2000 grit box finish, and have made some surface changes along the way. On heavier, or longer patterns, I’ve used 500/1500, and also 360/1000. I’ve found this to be a very good ball on fresh back ends. Once the transition comes into play, I can move in and still carry corners with some speed control. The Magic Gem is very strong through the pins, even for a lower rev player, like myself. This ball hits hard. The Magic Gem is a fixture in my bag every time I shoe up. It gets through the heads extremely clean and makes a nice smooth turn down lane. I highly recommend the Magic Gem, and add a star if you’re a lower rev player like myself. The Exotic Gem is a good step down later in the set. It’ll get down the lane further and make a sharper turn. A good one two punch. I highly recommend this ball if you’re looking for something strong to add to your arsenal. You won’t regret buying it. Carol Teel Roto Grip Amateur Staff Member

  • 5
    Do you believe in Magic?

    Posted by Tony Marino on Feb 19th 2024

    Magic Gem Cover: MicroTrax Hybrid Reactive Core: Defiant LRG RG: 2.47 RG Diff: 0.051 Int Diff: 0.016 My layout: 4.5 x 5 x 2 The Magic is a Hybrid Asymmetrical ball that I see working best on medium to med-heavy conditions. The hybrid MicroTrax cover on the Magic is feels more like a solid to me than a pearl which is what I like to see in hybrid covers. It does a great job of reading the front but not burning up right away unlike some some high end big covers. The low rg asymm core compliments this strong cover. The combo of the big hybrid cover and a the fast revving core translates to a medium response motion down lane. I have found that the Magic is best when the lanes need a big solid cover, but balls like the OG Gem and Reality are too early and forward. It allows me to get a bit more shape on the fresh without worrying about overshooting the break point down lane. Bowler stats: Left handed PAP: 5 x 1/4up Rev rate: 400

  • 5
    Roto Grip Magic Gem

    Posted by Brian Watson on Feb 15th 2024

    Brunswick Pro Anvil Lane (24 years old) Modified 46ft house pattern The 3rd Generation Roto Grip is Magic Gem. The original Gem was a solid, the Exotic is a Pearl, the Magic Gem is a Hybird. For me I like using the Gem when I need to go up the lane and control the pocket. When the Gem starts to bog down a little, I could go to the Exotic Pearl on the same line. But now with the Magic Gem I am able to move a little more left and shape it more down lane. I drilled mine 4 x 5 x 2 pin above bridge. Still a very strong bowling ball. I also use the Magic Gem on the longer sport patterns, as with my roll I need some oil up front especially with my medium ball speed. Like PBA Shark, PBA Dragon. Rolls better for me when I add a little Step 2 for house patterns. Brian Watson Storm Pro Shop Staff PAP - 3 7/8 up 1 1/4 RPM - 400 TILT - 17 Speed - 16-17

  • 5
    Roto Grip Magic Gem Ball Review

    Posted by Pete Dohan Jr on Jan 24th 2024

    Bowler Stats: Speed: 15.5 MPH Rev Rate: 275 RPM Tilt: 3-5 degrees Axis Rotation: 60 degrees PAP: 5 ⅜ over 1 ¼ up Layout: 5 X 3 X 33/4 VLS Video Review: The Magic Gem is the third release in the Gem series. I have had a lot of success with the Exotic Gem and with this release having a more solid hybrid coverstock I was excited to see how it would roll for me. The original Gem was too strong for me to use in league and on some PBA 50 patterns so with the Magic Gem it was time for me to try a pin down layout to help the strong asymmetrical core get through the fronts and have some recovery down the lane. On the house shot this ball will be more for the beginning league play when the lanes have not transitioned. As I move left with the Magic Gem it gets down the lane too far and does not recover well. If my rev rate was in a higher category this ball would be perfect for the house shot. This layout helps me use the stronger ball and stay to the right longer. With the slower motion that it makes downlane I do need to keep the surface to at least a 1000 abralon so I can blend the wet/dry better on the house shot. For bowling on the PBA 50 patterns this ball will be used on the shorter length patterns. Pete Dohan Storm Bowling Amateur Staff #StormNation

  • 5
    Roto Grip Magic Gem

    Posted by Michael LeViner on Jan 22nd 2024

    The Magic Gem is a slightly cleaner and “flippier” version of the first Gem, though the overall reactions of the two bowling balls are not too different. This ball still needs a good bit of oil in it's 2000 grit out of box finish. Side to side with the Gem, the Magic is about a foot further down the lane, and has a slightly stronger down lane reaction. Due to this, the Magic Gem is more adept at being able to move left and circle the lane. However, once the head oil goes away, it is time to drop down to an Exotic Gem or Duo. This ball fits firmly in the heavy to medium-heavy oil range.

  • 5
    Roto Grip Magic Gem

    Posted by Rich Kollmeyer on Dec 28th 2023

    Layout: 5 x 4 x 2 VLS After the original Gem’s success as a solid, the pearl Exotic Gem seemed like a logical next step, with its success, it was only a matter of time before we saw a hybrid version - enter the Magic Gem. The Magic Gem is powerful and aggressive, just like the original and continuous just like the Exotic. The Magic is a perfect blend of the two. The ball comes at 2000 grit, so shape-wise, it much more resembles the original Gem with a little added length. The surface can be easily adjusted to 3000 or 4000 to get a little added length without the snap that you get from the Exotic. The Magic Gem will be great for speed dominant bowlers or bowlers on heavy oil. My Specs - Speed - 16 mph, Rev Rate - 315. PAP 5 1/8 x 7/8 Up. Youtube Link:

  • 5
    Roto Grip Magic Gem review by Mike Craig

    Posted by Mike Craig - Storm Amateur Staff on Dec 23rd 2023

    I drilled up my ROTO GRIP MAGIC GEM with my standard layout of 4.5 x 4.5 x 2.5. This puts the pin close to the middle of my grip line but a good inch and a half above the fingers with a small CG kick out. I have thrown it with the box finish of 2000 factory finish. I put this one up with my stronger balls that I use when I see a heavier or longer pattern. I threw it against my ETERNITY PI, EXOTIC GEM, and VIRTUAL ENERGY BLACKOUT. Compared right away to these, the MAGIC GEM picked up a lot quicker on the lanes than the others with the ETERNITY PI being the closest. The MAGIC was a good motion much earlier than the PI and EXOTIC GEMS. The VEB would be the ball down option. Put this one in your bag if your looking for a stronger piece to pick up early or if your original GEM was just too early/stopped.

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