Each Arin necklace begins with your chosen birthstone —
a subtle marker of who you are, or who you carry with you.

You then select the gemstone base that sets the overall tone of the piece. Think of it as the backdrop — shaping how your birthstone is expressed.

Below are our most harmonious base pairings to guide your selection.

Rose Quartz

Soft blush-pink with a gentle warmth.

• Beautiful with May (Emerald) – romantic and classic
• Elegant with September (Navy) – refined contrast
• Rich with January or July (Red) – warm tonal depth
• Fresh with March or December (Turquoise) – sunlit contrast
• Glowing with November (Amber) – warmth layered on warmth

Rose quartz enhances jewel tones while maintaining softness.

Rainbow Moonstone

Milky white with subtle flashes of light.

• Universally flattering — pairs beautifully with all birthstones
• Especially luminous with March & December (Turquoise)
• Striking with September (Navy)
• Clean and fresh with May (Emerald)
• Warmly balanced with November (Amber)

Moonstone offers the most versatile and effortless foundation.

Ice Obsidian

Deep coffee brown with a smooth, glass-like depth.

• Dramatic with January & July (Red)
• Jewel-like with February (Plum)
• Elevated with September (Navy)
• Warmly radiant with November (Amber)
• Bold with March or December (Turquoise)

Ice obsidian adds grounding sophistication and contrast.

Amazonite

Soft blue-green reminiscent of tropical waters.

• Striking with January or July (Red) – strong colour contrast
• Light and refined with April (Champagne)
• Softly romantic with June (Dusty Rose)
• Sun-warmed with November (Amber)
• Deepened with September (Navy)

Amazonite brings freshness and a subtle coastal mood.

There are no strict rules — only different expressions.
Choose the pairing that feels most like you.

Every SENA piece belongs to a collection. These collections are not trends or seasons, but a way of understanding how each piece is created, worn, and experienced. Some are deeply personal, some are made in small studio-led runs, and some are designed as lighter companions for layering. Together, they form the language of SENA.

Signature

The Signature Collection forms the heart of SENA.

These are personalised pieces designed to hold meaning — initials, birthstones, zodiac elements, and symbols chosen by you.

They are created to become companions to your story: timeless, personal, and quietly significant.

Studio

The Studio Collection is where ideas are explored more freely.

These pieces are often created in small batches and may feature unique stones, unexpected colour pairings, or designs that emerge through the making process.

Studio pieces reflect instinct, experimentation, and the beauty of limited discovery.

Light

The Light Collection is designed for effortless layering.

These pieces are delicate, refined, and visually lighter in feel, chosen to sit beautifully alongside Signature and Studio designs.

They bring balance to a stack — subtle, versatile, and easy to wear every day.

Seed

The Seed Collection is a small and special offering created for children.

These pieces are simple, thoughtful, and made with the same care as the rest of SENA, with a softness suited to younger wearers.

Seed speaks to beginnings — tiny expressions of memory, sentiment, and style.

Form

The Form Collection is SENA’s refined offering for men.

These pieces focus on strong shape, clean lines, and balanced proportions, creating jewellery that feels grounded, modern, and quietly confident.

Designed with a restrained palette and architectural simplicity, Form explores the strength of minimal design.

At its heart, SENA is about companionship. The name means companion or supporter — jewellery designed to move with you through different seasons of life. When you see a SENA collection icon on a piece, it tells you which part of the SENA story it belongs to.

Some SENA pieces are available as pre-order. These are designs that are not currently in stock or are made especially for you, and therefore require additional time before dispatch.

Pre-ordering allows us to create thoughtfully, minimise waste, and maintain the integrity of our materials and process. They are always worth the wait.

Before Ordering

Full payment is required at the time of purchase for all pre-order items.
Pre-order purchases are final. Due to the made-to-order nature of these pieces, we are unable to accept cancellations, changes, or refunds once an order has been placed.
Please consider your purchase carefully before completing checkout.
While most pre-orders ship within the stated timeframe, this is an estimate only and may vary due to production or sourcing delays. We are unable to guarantee a specific dispatch date.
Once your pre-order item is ready, it will be shipped using the delivery method selected at checkout.
If your order contains both pre-order and in-stock items, the full order will be shipped together once all items are available. This ensures a single shipment and avoids multiple delivery charges.
If you require in-stock items sooner, we recommend placing separate orders.
By placing a pre-order, you acknowledge and accept the above terms.

Pre-order pieces are created with intention and patience — part of what makes them special. If you have any questions about timing or availability before ordering, we’re always happy to help.

About Our Gemstones

We work with natural and semi-precious gemstones, each formed over time by the earth. No two stones are ever exactly alike — and that individuality is part of their beauty.

Variations in colour, tone, veining, translucency, and surface texture are to be expected and celebrated. You may notice subtle inclusions or organic markings; these are natural characteristics of genuine stones, not imperfections.

Some gemstones may be gently enhanced using stable, industry-accepted treatments (such as polishing, heat, or dyeing) to support colour or durability. Any treatments are chosen thoughtfully and disclosed where relevant.

Our stones are selected for their overall feel, balance, and character rather than uniform perfection. Each piece is designed to honour the natural qualities of the materials, resulting in jewellery that feels expressive, tactile, and uniquely yours.

About Our Pearls

Pearls are natural gems formed inside oysters and mussels over time. Each one carries its own character — from soft variations in colour and lustre to subtle surface markings and organic shapes.

You may notice gentle differences between pearls, even within the same piece. These natural variations aren’t flaws; they’re part of what makes pearls so beautiful and individual.

Some pearls may be naturally coloured, while others are colour-enhanced using stable, industry-accepted treatments to highlight their tone. Any treatments are chosen thoughtfully and disclosed where relevant.

We select pearls for their glow, texture, and overall harmony rather than uniform perfection. With a little care, pearls will continue to develop their soft lustre and remain a cherished part of your collection for years to come.

Our Signature Marks

Each SENA piece is shaped by thoughtful materials and considered construction. The below icons offer a quiet insight into how it is made, how it wears, and the story it carries.

Mummy & Me

Designed as a matching mother-and-daughter set, these pieces are created in two considered lengths to be worn together or individually.

A quiet expression of connection — pieces that mirror one another while holding their own story.

Vintage & Found

Crafted using found, vintage, or carefully sourced beads chosen for their individual character.

Each element is selected for its subtle irregularities, creating pieces that feel storied, unique, and quietly distinctive.

Hand-Knotted

Constructed using traditional hand-knotting techniques for softness, flexibility, and durability.

This method allows each piece to move naturally and sit comfortably against the skin.

Sterling Silver

Finished with sterling silver components selected for their strength and timeless appeal.

A classic material that develops a natural patina over time, adding to the character of the piece.

14k Gold Filled

Finished with 14k gold-filled findings designed for long wear and durability.

Offers the look of solid gold with enhanced resilience for everyday wear.

Australian Shipping

All SENA pieces are carefully prepared and packaged from our studio in Australia.

Standard shipping: $12 AUD

Express shipping: $16 AUD

Complimentary shipping on orders over $250

Estimated delivery:

Standard: 2–5 business days

Express: 1–3 business days

International Shipping

We ship worldwide using tracked international delivery services.

Flat rate international shipping: $30 AUD

Estimated delivery times:

New Zealand: 5–8 business days

USA & Canada: 7–12 business days

UK & Europe: 7–12 business days

Rest of world: 10–15 business days

Shipping times are estimates and may vary depending on customs processing in your country.

Duties & Customs

International orders may be subject to import duties, taxes, or customs fees determined by your local government.

These charges are the responsibility of the recipient and are not included in the purchase price or shipping cost.

If you’re unsure whether these charges apply, we recommend checking with your local customs office prior to placing your order.