Every SARDA™ Monday debut is built around gemstones worth knowing. This week's drop introduces four distinct stones — Kunzite, Tanzanite, Malawi Rose Garnet, and Lavender Moon Quartz — each sourced, faceted, and set by hand in .925 sterling silver. Before you shop, here's a closer look at what makes each one special.

Kunzite: Nigeria's Pink Spodumene

Kunzite is the gem-quality, pink-to-lavender variety of the mineral spodumene. Its color ranges from the palest blush to a rich, dusty rose — often with a slight violet cast that shifts depending on the angle of light. This optical quality, called pleochroism, means a single stone can read pink, violet, or nearly colorless depending on how you hold it to the light.

The stone was first formally described in 1902 by George Frederick Kunz, chief gemologist at Tiffany & Co., who identified it in California. Today, notable deposits exist in Nigeria, Pakistan, Afghanistan, and Brazil. The Nigerian material in this week's debut tends toward a warm, well-saturated pink. Oval and round cabochon cuts showcase Kunzite's color without fighting its natural optical character.

At a Mohs hardness of 6.5 to 7, Kunzite is moderately durable but has two perfect cleavage planes — sharp blows can split it. Store it away from prolonged direct sunlight, which can gradually lighten its color. Avoid ultrasonic cleaners and steamers; instead, wipe clean with a soft cloth and mild soap in warm water. This week, Kunzite appears in the One Salvation collection in a tip-to-tip bracelet paired with Rose De France Amethyst accents, plus two ring styles. Shop the debut →

Tanzanite: Found in One Place on Earth

Tanzanite is the blue-violet variety of the mineral zoisite, found commercially in a single location: the Merelani Hills near Mount Kilimanjaro in northern Tanzania. First discovered in 1967 by a Masai tribesman named Ali Juuyawatu, it was later named and introduced to international markets by Tiffany & Co. Geologists believe the geological conditions that created Tanzanite are unlikely to be replicated elsewhere on Earth — which makes it among the rarest colored gemstones in any collection.

Its color shifts between blue and violet depending on the light source: cooler daylight emphasizes blue; warm incandescent light deepens the violet. The stones in this debut are heat-treated, the universal and accepted standard for Tanzanite that removes the brownish tones found in rough material and reveals the vivid blue-violet prized by collectors. Tanzanite is also the birthstone for December.

At Mohs 6 to 7, Tanzanite rewards careful handling. Avoid ultrasonic cleaners, steamers, and sudden temperature changes. Clean only with warm soapy water and a soft brush. This week, Tanzanite debuts in the Love One Another collection as a stackable ring in sizes 5 through 12. See the ring →

Malawi Rose Garnet: A Blush from Southern Africa

Garnets are among the oldest gemstones in human use. Ancient Egyptians wore them as protective amulets, Roman soldiers carried garnet-set signet rings, and medieval European travelers believed garnets ensured safe passage. Across thousands of years and dozens of cultures, the garnet family has remained one of the most consistently treasured gemstones on record.

Malawi, in southern Africa, has emerged in recent decades as a source for particularly delicate rose-pink garnet material. The stones are natural and untreated — no heat, no filling — and the round faceted cut used in this week's piece shows a clear, bright color with good light return. At 0.26 carats per stone, each piece is understated: a flash of blush rather than a bold statement.

Garnet rates Mohs 7 to 7.5, making it well suited to everyday wear. Clean with mild soap and warm water. This week's Malawi Rose Garnet debuts in the Love One Another collection as the Surrounds Me Ring™, available in sizes 6 through 11. Shop the ring →

Lavender Moon Quartz: Brazilian Purple, Transformed

Lavender Moon Quartz is a trade name for Brazilian quartz that has been irradiated — exposed to controlled ionizing radiation — to develop a soft lavender-to-pale-violet color. This is a stable, recognized treatment in the gem industry, and the resulting color is permanent under normal wear conditions. Brazil's highland gem belt is one of the world's premier sources for quartz in all varieties, prized for its clarity and consistent crystal quality.

The oval faceted cuts used across this week's debut maximize light return, giving each stone a quiet, luminous quality — not flashy, but genuinely present. The lavender reads close to wisteria or soft amethyst in most lighting, distinguishing it clearly from the deeper purple of treated amethyst while remaining unmistakably warm.

Quartz sits at Mohs 7 — among the most durable stones in this week's lineup. Clean with mild soap and warm water; avoid harsh chemicals or abrasive cloths. The irradiated color is stable and will not fade with normal wear. This week, Lavender Moon Quartz headlines the Pain For Purpose collection across a necklace, multiple bracelet styles (toggle, cuff, and a lavender-and-amethyst pairing), and two ring designs. It's the broadest single-stone debut of the week. Shop the full Pain For Purpose debut →

Caring for This Week's Stones

Each stone this week has its own profile — here's a quick-reference guide so you can keep every piece in top condition.

• Kunzite: Mohs 6.5–7. Keep out of direct sunlight for extended periods; color may gradually lighten. No ultrasonic cleaners. Clean with mild soap, warm water, and a soft cloth. Store separately from harder stones.
• Tanzanite: Mohs 6–7. Most heat-sensitive stone in this drop. No ultrasonic cleaners or steamers; no sudden temperature changes. Clean only with warm soapy water and a soft brush.
• Malawi Rose Garnet: Mohs 7–7.5. Durable for daily wear. Clean with mild soap and warm water.
• Lavender Moon Quartz: Mohs 7. Stable color; irradiated treatment is permanent. Clean with mild soap and warm water. No harsh chemicals.
• All sterling silver settings: Store in an anti-tarnish pouch or cloth-lined box. For a deeper clean, SARDA's Jewelry Cleaning Kit is made specifically for your pieces. For full care guidance, visit our Sterling Silver Care Guide.

This week's debut spans the One Salvation, Love One Another, and Pain For Purpose collections — each available in limited quantities. Shop all new arrivals at SARDA™ →