Custom Line · 28m motor yacht · French Riviera
Rare Gem
A 2022 Custom Line based in Nice, with five cabins for ten guests and three Seabobs.
The largest, for up to ten
Rare Gem is a 28.5m Custom Line built in 2022 and based at Marina Lympia in Nice for the summer, the largest motor yacht on our list and the only one for ten guests.
Five cabins include a super-king master, two queen VIPs and two twins, one with a pullman and one that converts to a double, with stabilisers at anchor and underway. Three Seabobs, four paddleboards, wakeboards and a Williams tender for eight are on board.
Why she’s on our list
- Takes up to ten guests
- Built in 2022
- Stabilisers at anchor and underway
- Three Seabobs
Gallery
Life aboard Rare Gem
Cabins & layout
5 cabins, 10 guests
- Master with a super-king bed
- Two VIP cabins with queen beds
- Twin cabin with a pullman
- Twin cabin that converts to a double
- Five en-suite bathrooms

On board
Toys, comfort and crew
Water toys
- Williams SportJet 435 tender for eight
- Three Seabobs
- Four paddleboards
- Two wakeboards
- Water ski
- Inflatable sofa
- Snorkel and fishing gear
Comfort
- Stabilisers at anchor and underway
- Air conditioning (not run overnight, as listed)
Crew
- A crew of five
Toys and crew are as listed for the current season and can change.
Rates
What a week costs
| Mid-June – mid-September 2027 | €105,000 |
|---|---|
| Rest of 2027 | €95,000 |
Per week, in euros, on MYBA terms, as published by the owner for 2027. Subject to availability and confirmation at booking.
Example: one week in July 2027
Request availability
Reserve your week on Rare Gem
Tell us your dates and group. We check live availability with the owner and come back with a written proposal and the full price. Nothing is booked until you sign.
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iBoat International acts as your charter broker. Your charter contract is with the yacht’s owner or operator. Terms


