






SIRENA Black Pearl, Green Apatite & Kyanite Necklace
Worldwide Shipping
2-year Warranty
Handselected Materials
The Song of the Sea
SIRENA is named for the sirens of mythology, the guardians of the ocean whose song was said to be irresistible. This necklace earns that name through a combination of three stones and one material that share the deep, organic quality of the sea at different depths. Natural black freshwater pearls alternate with 2 mm AAA green apatite square beads and faceted green kyanite rondelles, all set with thick 18k gold-plated accents. The result is a necklace of unusual dark depth: black organic lustre, teal-green mineral clarity, and sage-green natural balance, brought together in a piece that is neither simple nor complicated but precisely right.
Three Materials, One Ocean
Black freshwater pearls are among the rarest versions of a gemstone that is already the only one produced by a living organism. Their deep black and graphite tones are natural rather than dyed, shaped by the mussel over years of nacre formation, and each pearl is unique in its form and surface quality. Green apatite, found in Brazil, Mexico, and Madagascar, has a luminous teal-green that sits between the warmth of emerald and the cool of aquamarine, and it is associated with clarity of mind and grounded personal growth. Green kyanite, found in Brazil and parts of Africa, is one of the few minerals that never accumulates negative energy and never needs cleansing, and its soft sage-green has a serene, quietly balancing quality that complements the more vivid apatite with natural ease. Together, these three materials create a necklace that rewards looking closely and layers with equal ease.
Styling SIRENA
This necklace works particularly well alone at 40 cm against a bare or lightly covered neckline, where the depth and variety of the three materials can be fully appreciated. It also layers naturally with the DEYA gold chain at a shorter length, which frames the dark and green tones of the SIRENA against plain gold. The VEYRA Black Freshwater Pearl Bracelet makes an exceptional wrist companion, carrying the black pearl element from necklace to wrist in the same organic material.
Materials & Details
- Gemstones: Natural black freshwater pearls, green apatite square beads 2 mm AAA, and faceted green kyanite rondelles
- Accents: Brass beads with thick 18k gold plating
- Clasp & findings: Thick 18k gold plating on brass
- Length: 40 cm with a 4 cm adjustable extension
- Custom lengths available at hello@opaze-studio.com
Care
- Keep away from perfume, chemicals, and prolonged moisture
- Store in your Opaze pouch when not wearing
- Arrives in an Opaze gift box
Handcrafted with Love
Water-resistant
Premium Goldplating
Hand-selected, Premium Natural Gemstones
OPAZE is a female-founded jewelry house born in Switzerland. We design modern jewelry around hand-selected, premium gemstones, blending contemporary elegance with the energy of nature. Every piece is crafted with intention, made to reflect your authentic character.
As each gemstone is natural, minor variations in color and size can occur compared to the description and photos, but we hand-select every piece to guarantee premium quality and a beautiful look.
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Lasting Quality
We only use hand-selected premium gemstones chosen for their exceptional quality, color and natural brilliance.
Atelier Craft
All our pieces are handmade. Some are made especially for you and leave our atelier 3-5 days after you place your order.
Female Founded
Created by women, for women. We design to celebrate character, individuality and the power of authentic self-expression.
"Opaze creates jewelry for women of character,
drawing material from our Mother Earth."






