Pearls are listed according to hole size.
A .8mm hole is considered large for a pearl. Most "regular" pearl hole sizes range from .25mm to .40mm. What does this mean for you? Versatility. You can use a thicker cord and get some interesting looks that you could not get with a smaller hole size.
The differences between the pearls above (TB1) and the ones below (PB73) are that the ones above have a slightly smaller hole (.8mm vs 1mm) and have some tiny blemishes.
Large Hole Pearls

Large Hole Pearl (PB65)
$12.00
$12.00

Large Hole Pearl 9-10mm (PB66)
$28.00
$28.00

Large Hole Pearl 8mm X 6.5mm (PB69)
$10.00
$10.00

Large Hole Pearl Hole 6 X 5mm (PB70)
$24.00
$24.00

Large Hole Pearl Silver 7mm X 6mm (PB71)
$24.00
$24.00

Large Hole Pearl 6.5mm-7mm (PB72)
$24.00
$24.00

Large Hole Pearl 6mm X 7mm (PB73)
$20.00
$20.00

Large Hole Pearl 11-12mm (PB20)
$4.50
$4.50

Grey Round Pearl 5.25mm (PB19)
$22.00
$22.00

Large Hole Pearl 9mm (PB61)
$28.00
$28.00

Large Hole Pearl 11mm X 8mm (PB54)
$11.00
$11.00

Lentil Shape Large Hole Pearl 9mm X 6mm (PB97)
$11.00
$11.00