# Pyramid Blueprint Pearl Project 1.618

> Bowling ball — data from CarryDown (https://www.carrydown.com/balls/pyramid-blueprint-pearl-project-1-618/)

- Brand: Pyramid
- Availability: current
- Released/approved: 2015-11-17
- Coverstock: [GPS Navigational Pearl](https://www.carrydown.com/brands/pyramid-bowling/coverstocks/gps-navigational/) (pearl)
- Core: [SG 19.5](https://www.carrydown.com/brands/pyramid-bowling/cores/sg-19-5/)
- Intended condition: Medium-heavy oil
- Factory finish: 2000-Grit Abralon/Factory Finish Polish
- List price (MSRP): no manufacturer price found
- USBC approved: no

## Specs by weight

| Weight | RG | Differential | Int. Diff | Mass Bias |
|---|---|---|---|---|
| 15 lb | 2.53 | 0.05 | — | — |

## Description

Plan for success.