13Independently selected
Gübelin Gem Lab
Switzerland · Global submissions
An independent gemmological laboratory with published testing and report services.
Checked 8 August 2026Open listing ↗
The Tide List · considered directory
Useful names
in the blue.
A curated route to makers, places, restaurants, experiences, laboratories, networks and resources connected with the ocean-shaped world.
THETIDELIST
Selected with context.
Disclosed with care.
01
Selected
Entries begin with relevance, usefulness and an ocean connection—not payment.
02
Disclosed
Independent, submitted, affiliate and sponsored relationships are labelled.
03
Checked
Each record carries an information-check date and links to its controlling source.
Explore the directory
Find by world,
type or horizon.
25 of 156 considered listings shown. Inclusion is informational—not a ranking, certification or guarantee.
14Independently selected
Jewelmer collections
Philippines · International retail
Fine jewellery built around golden South Sea cultured pearls.
Checked 8 August 2026Open listing ↗
15Independently selected
Mie and Japan’s akoya tradition
Japan
Japan is a recognised centre of akoya cultivation and pearl-industry history.
Checked 8 August 2026Open listing ↗
16Independently selected
Mikimoto collections
Japan · International retail
Contemporary and classic pearl jewellery presented by the company that bears Kokichi Mikimoto’s name.
Checked 8 August 2026Open listing ↗
17Independently selected · commercial visitor site
Mikimoto Pearl Island
Toba · Mie · Japan
A Toba museum island presenting pearl formation, cultivation, production, jewellery and the history of Kokichi Mikimoto and ama divers.
Checked 27 August 2026Open listing ↗
18Independently selected
Paspaley collections
Australia · International shipping varies
South Sea pearl jewellery from an Australian pearling company and jewellery house.
Checked 8 August 2026Open listing ↗
19Independently selected
Pearl Quality Factors
Global
GIA explains seven observable pearl value factors without reducing them to one universal grade.
Checked 8 August 2026Open listing ↗
20Independently selected
Swiss Gemmological Institute SSEF
Switzerland · Global submissions
An independent Swiss foundation providing gemstone, jewellery and pearl testing.
Checked 8 August 2026Open listing ↗
21Independently selected
Tahitian cultured pearls
French Polynesia
Saltwater cultured pearls whose naturally dark body colours can carry varied overtones.
Checked 8 August 2026Open listing ↗
22Independently selected
TASAKI pearl jewellery
Japan · International retail
Pearl-led fine jewellery ranging from classic forms to directional designs.
Checked 8 August 2026Open listing ↗
23Independently selected
Tuamotu and Gambier pearl regions
French Polynesia
French Polynesia is the recognised home of Tahitian cultured pearl production.
Checked 8 August 2026Open listing ↗
24Independently selected
White South Sea cultured pearls
Australia · Southeast Asia
Large saltwater cultured pearls generally associated with Pinctada maxima oysters.
Checked 8 August 2026Open listing ↗
The Tide List letter
New names and stories,
considerately delivered.
Receive noteworthy additions from the directory and new Eight June stories. Never a daily flood.
Submit, claim or correct
Bring a useful name
into the blue.
Suggest a new listing, identify your relationship to an existing one, or send a correction. Every submission is reviewed before publication.
Payment cannot buy verification. Commercial relationships are labelled wherever they apply.