Akoya Shell Buttons

Akoya shell buttons are cut from the shell of the akoya pearl oyster, the same small oyster famous for producing classic round pearls. In the button trade they are often called agoya buttons, and the two names describe the same material. The inner layer of the shell is a fine, bright nacre with a soft silvery-white glow and delicate hints of pink, blue and green that move as the light changes. Cut, shaped and polished into buttons, it gives a garment a quiet, refined finish that people notice up close.

What makes akoya special is the combination of a fine, even lustre and a slim, elegant profile. The shell is relatively thin, so akoya shell buttons are usually flat with 2 holes and sit neatly on shirts, blouses and light knitwear. Each natural button carries its own subtle pattern, part of the charm of genuine shell.

At shellbuttons.com we work together with a shell button factory in Hong Kong, with our Sofia office serving customers across Europe. Brands and garment factories can request samples and a price offer, while designers, tailors and makers can buy smaller quantities in our online shop.

Origin of akoya shell

Where our akoya comes from: our akoya shells come from Japan, the traditional home of akoya pearl culture. They are ocean shells, cultured in pearl farms rather than taken from the wild.

The akoya pearl oyster is a marine bivalve of the genus Pinctada, found mainly in the warm coastal waters of the western Pacific and Indian Ocean. It is widely cultivated for pearls, especially in East Asia, and the shells are a valued material once the pearl harvest is complete.

Like other pearl oysters, the akoya builds the inside of its shell from nacre, also called mother of pearl. The oyster lays down extremely thin layers of aragonite crystals bound with an organic protein. Light passing through and reflecting off these stacked layers creates the characteristic iridescence. Because the akoya shell is compact and finely layered, its nacre typically shows a smooth, close-grained lustre, which polishes to a beautiful soft shine.

Character of akoya shell buttons

Source	Akoya (agoya) pearl oyster, a marine pearl-producing shell
Look	Silvery white nacre with soft pink, blue and green overtones; fine, even iridescence
Feel	Cool to the touch, smooth, hard and pleasantly solid in the hand
Styles	Normally flat with 2 holes; 4 holes, rim, dome and shank styles on request
Sizes	Normally 14L–40L (about 9–25 mm)
Thickness	Slim profile, following the natural thickness of the shell and the button size
Grades	Several quality grades; grade T2 is a popular choice for fashion production

Colours and versions

The natural colour of akoya shell is a luminous silvery white. Look closely and you will see gentle overtones: a warm pink blush on some pieces, cooler blue and green reflections on others.

Buttons are sorted into grades according to the evenness of colour, the clarity of the lustre and the surface quality. Grade T2 is a popular grade that balances a beautiful appearance with good value for regular collections. Higher grades are selected for the most even colour and brightest shine, which suits premium shirts and occasion wear.

The back of the button can be polished, so both sides show nacre, or it can keep a natural skin back for a more organic, textured feel. Akoya shell can also be dyed. Because the nacre is translucent, dyed colours keep a pearly depth, and soft pastels, greys and deeper fashion shades are all possible.

Sizes and thickness

Button sizes are measured in lignes (L), where 1 ligne is about 0.635 mm. Akoya shell buttons are normally produced from 14L to 40L. Thickness follows the size and the natural shell, so smaller buttons are finer and larger ones a little sturdier.

14L (≈ 9 mm)	Shirt cuffs, collar points, baby and children's wear
16L (≈ 10 mm)	Classic shirt fronts, blouses, fine knitwear
18L (≈ 11.5 mm)	Shirts, blouses, polo shirts, dresses
20L (≈ 12.5 mm)	Blouses, light cardigans, pyjamas, dresses
24L (≈ 15 mm)	Cardigans, light jackets, shirt dresses
28L (≈ 18 mm)	Jacket cuffs, knitwear, decorative fronts
32L (≈ 20 mm)	Jackets, waistcoats, statement cardigans
36L (≈ 23 mm)	Light coats, feature buttons on dresses
40L (≈ 25 mm)	Coats, capes, bags and accessories

Finishing and customisation

Every akoya button is cut from the shell, shaped and polished, and we can adapt it to your design in many ways:

• Holes: 2 holes as standard, 4 holes on request.
• Profile: flat, rim or dome, and a shank on request for coats and jackets.
• Back: polished back for a nacre finish on both sides, or natural skin back.
• Colour: natural akoya colour or dyed to match your fabric.
• Logo: laser engraving of your logo or brand mark on request.
• Grade: choose the grade that fits your collection, with T2 as a popular starting point.

Samples are made before bulk production, so you can check colour, size, thickness and finish on your own fabric. To start, send us your requirements through our samples and price offer page.

Where to use akoya buttons

The slim profile and soft glow of akoya make it a natural choice for fine garments where the button should look elegant without feeling heavy:

• Shirts and blouses: the classic use, from formal white shirts to silk and linen blouses.
• Knitwear: cardigans and fine-gauge sweaters gain a light, luxurious detail.
• Dresses: shirt dresses, summer dresses and bridal or occasion wear.
• Children's and baby wear: small sizes give a delicate, heirloom feel.
• Nightwear and loungewear: pyjamas in cotton or silk look refined with pearly buttons.
• Accessories and crafts: bags, jewellery, embroidery and handmade pieces.

Design idea: pair natural white akoya with white or pastel fabrics for a tonal look, or use a skin-back button on denim and chambray for a relaxed, natural detail.

Care for akoya shell buttons

Natural shell is hard and durable, and a few simple habits keep it looking its best:

• Washing: wash at moderate temperatures and choose a gentle cycle where possible. Buttoning the garment and turning it inside out helps protect the buttons.
• Detergents: mild detergents are best; avoid bleach and strong chemicals, which can dull the nacre.
• Ironing: iron around the buttons or on the reverse side, using a cloth over the button area if needed.
• Dry cleaning: shell buttons generally handle dry cleaning well; for valuable pieces, ask the cleaner to cover or protect the buttons.

How to choose: akoya and other shells

Each natural shell has its own personality, and the right one depends on the look you want:

• Akoya is ideal when you want a slim, flat button with a fine silvery lustre and soft overtones, perfect for shirts and blouses.
• Mother of pearl buttons offer a wide palette of white, black, yellow and brown shells in many styles and thicknesses, from 1.6 mm upwards.
• Abalone shell buttons bring bold, multicoloured iridescence for statement designs, with red abalone available in very large sizes.
• River shell buttons give a white button with an attractive iridescent shadow and a versatile, everyday elegance.

If you are unsure, order samples of two or three shells and compare them on your fabric.

FAQ

Are akoya and agoya buttons the same?

Yes. Agoya is a common trade spelling of akoya. Both names describe buttons made from the shell of the akoya pearl oyster.

What sizes are available?

Akoya shell buttons are normally made from 14L to 40L, which is about 9 mm to 25 mm. The most common shirt sizes are 16L and 18L.

What does grade T2 mean?

Grade describes the evenness of colour, the lustre and the surface quality of the shell. T2 is a popular grade that offers a beautiful look and good value for fashion production.

Can you add our logo?

Yes. We can laser engrave your logo or brand mark on akoya buttons on request, and we make samples before bulk production so you can approve the result.

Can I buy a small quantity?

Yes. Designers, tailors and makers can buy selected buttons in our online shop. For custom colours, engraving or production quantities, please contact us or request an offer.

Akoya shell buttons bring natural light and quiet luxury to every garment they touch. For custom orders, samples and a tailored price offer, visit our wholesale page. To buy ready buttons in smaller quantities, browse the online shop.