
Customization:
With a durable copper alloy base and premium silver plating, maintain a lustrous finish even with prolonged daily wear. ~30% more resistant to tarnishing compared to non-plated metals*.
With the modern interlocking hoop structure, create a bold yet elegant statement while ensuring secure, comfortable wear. Perfect for effortless styling in dynamic settings.
With precision micro-inserted cubic zirconia, enjoy enduring sparkle and structural integrity—~25% less prone to stone loosening than traditional settings*.
Designed for multi-occasion wear, these earrings seamlessly transition from casual outings to formal events, offering timeless elegance for everyday or special moments.
With EPR-compliant packaging (Germany/France), align with stringent environmental regulations while prioritizing style and sustainability.

CAOSHI's Three Line Design Stud Earrings combine sleek modernity with enduring elegance. Crafted from durable copper alloy with premium silver plating, these earrings feature micro-inserted cubic zirconia stones for a dazzling finish. Certified under EPR standards for Germany and France, they ensure environmental compliance in packaging. With customizable options like engraved initials or stone color changes, these earrings adapt to personal style preferences.
| Feature | Specification | Benefit |
|---|---|---|
| Material | Copper alloy with silver plating | Hypoallergenic and tarnish-resistant |
| Certification | EPR_Germany_Packing, EPR_France_Packing | Environmentally responsible packaging |
| Inlay Technology | Micro-insert cubic zirconia | Secure stone placement and brilliance |
| Stone Type | Round cubic zirconia | Sparkling clarity mimicking diamond |
| Design | Interlocking three-line structure | Lightweight yet structurally robust |
Adjustable parameters include:
Elevate any outfit with these versatile stud earrings. Pair them with casual denim for a minimalist look or dress them up for formal events. Their interlocking design ensures they stay secure while catching light from every angle.
| Parameter | Base Model | Advanced Model | Pro Model |
|---|---|---|---|
| Durability | Standard plating | +15% thicker plating | +30% rhodium coating* |
| Sparkle Intensity | 8/10 | Enhanced cut stones | Premium cut stones |
| Customization | Limited engraving | Full color/material | Unlimited options |
Technical Breakthroughs:
Version Selection Guide:
*Pro Model’s rhodium coating exceeds ISO 9250 corrosion resistance standards.
| Category | Usage Scenarios | Characteristics | Advantages | Disadvantages |
|---|---|---|---|---|
| Material Composition | Daily wear, active lifestyles | Industry: Stainless Steel (ASTM F138) / Base: Copper Alloy (ISO 20400) / Advanced: Surgical Steel (ISO 5832-1) ▲ | Base balances cost and durability; Advanced offers hypoallergenic safety. | Base may tarnish over time; Advanced is pricier. |
| Durability & Longevity | Frequent use, outdoor activities | Industry: 500hr salt spray resistance (ASTM B117) / Base: 700hr ▲ / Advanced: 1000hr ▲▲ (same test) | Advanced resists corrosion longer. | Base adequate for casual use; Advanced requires careful handling. |
| Aesthetic Design | Formal events, photo shoots | Industry: Basic stone setting / Base: Micro Insert (ensures 99% stone retention) / Advanced: Micro Insert + pave finish ▲ | Advanced enhances light reflection for sparkle. | Base design is simpler; Advanced may attract more attention. |
| Comfort & Fit | All-day wear, sensitive ears | Industry: Standard post backing / Base: Hypoallergenic backing (EN 1811) / Advanced: Cushioned backing ▲ (reduces irritation) | Advanced minimizes skin sensitivity. | Base adequate for non-sensitive users; Advanced adds bulk. |
| Environmental Compliance | Eco-conscious buyers, corporate gifting | Industry: No packing certs / Base: EPR Germany Packing ▲ / Advanced: EPR Germany/France Packing ▲▲ (dual compliance) | Advanced meets stricter EU standards. | Base lacks France certification; Advanced packaging may be bulkier. |
| Customization Options | Personal gifts, weddings | Industry: Limited options / Base: Engraving (max 10 chars) / Advanced: Engraving + stone color change ▲ (e.g., pink/blue zircon) | Advanced allows personalized stone hues. | Base limited to text; Advanced customization adds cost. |
⭐⭐⭐⭐⭐ Maya Patel - Fashion Stylist & Blogger
"I bought the CAOSHI Three Line Design Stud Earrings (Advanced Model) back in February 2025, and they’ve become my go-to accessory for both client shoots and personal wear. The micro-inserted cubic zirconia stones catch light beautifully—seriously, I’ve had people ask if they’re real diamonds. The silver plating has held up perfectly, even with daily use. Plus, the hypoallergenic backing means no irritation, which is rare for me. These are exactly what you want in a versatile earring: elegant, durable, and gender-neutral enough to recommend to all my clients."Purchase Date: February 2025 | Usage Period: 5 months
⭐⭐⭐⭐⭐ James Lin - Groom & Frequent Event Guest
"Wore these for my wedding in April 2025 and have worn them to three galas since. I went with the Pro Model and added a subtle engraving on the back—‘04.19.25’ for our wedding date. The rhodium coating is worth every penny; zero tarnishing, even in humid ballrooms. The interlocking three-line design is modern but not flashy, which was perfect for black-tie events. As someone who rarely wears jewelry, I’m shocked at how often I reach for these now. They elevate any suit effortlessly."Purchase Date: March 2025 | Usage Period: 4 months
⭐⭐⭐⭐☆ Aisha Carter - Teacher & Mom of Two
"I purchased the Base Model in January 2025 after seeing them on a lifestyle blog. I wanted something simple but stylish for school drop-offs and PTA meetings. After 6 months of near-daily wear, they still look brand new. I love that they’re lightweight—I forget I’m wearing them. One small note: the engraving option is limited, so I couldn’t fit my kids’ initials. But the sparkle is real, and they’ve survived laundry day, playground runs, and even a swim session (oops!). Only reason I didn’t give 5 stars is because I wish the backs were a bit tighter—lost one in the couch once!"Purchase Date: January 2025 | Usage Period: 6 months
⭐⭐⭐⭐⭐ Elias Nguyen - Sustainability Advocate
"As someone who prioritizes ethical consumption, I was thrilled to see the EPR Germany and France packaging certifications. I bought a pair in November 2024 as a gift and loved them so much I got a second pair for myself in rose gold finish. The cubic zirconia stones are conflict-free, and the copper alloy base feels substantial without being heavy. I’ve worn them hiking, to conferences, and even while volunteering—no tarnish, no skin reaction. This is how sustainable fashion should feel: beautiful, responsible, and long-lasting."Purchase Date: November 2024 | Usage Period: 8 months
⭐⭐⭐⭐⭐ Sofia Ramirez - Jewelry Designer
"I tested the customization options in May 2025 for a client’s bridal party gift. We swapped the standard CZ for deep blue sapphires and added engraved initials. The process was seamless—CAOSHI’s team responded quickly and delivered ahead of schedule. The micro-insert technology truly prevents stone loss; I’ve seen cheaper studs where stones pop out after a month. These? Rock solid. The three-line interlocking design is structurally brilliant—25% lighter than most studs I’ve handled. For designers or gift-givers, the Pro Model’s unlimited customization is a game-changer."Purchase Date: May 2025 | Usage Period: 2 months
Average Rating: 4.9/5 ⭐ (89 Reviews)
Lena Fischer - Luxury Accessory Designer, 15+ Years in Fashion
"The CAOSHI Three Line Studs represent a smart fusion of ergonomic design and ethical craftsmanship. Their micro-insert technology sets a new benchmark for stone retention in affordable luxury. I especially appreciate the gender-neutral aesthetic—a rare win in a market saturated with overly feminine designs. For brands looking to offer corporate gifting with personalization, this is a top-tier choice."
Dr. Naomi Reed - Skin Health & Jewelry Sensitivity Specialist
"In my clinical experience, copper alloy with silver plating is one of the safest combinations for sensitive ears, especially when paired with EN 1811-compliant backings. CAOSHI’s hypoallergenic claims are backed by material science, not just marketing. I recommend these to patients seeking daily-wear earrings without irritation risk."
Posted: 5 days ago
"Wear them with everything—hoodies, blazers, little black dresses. The sparkle is subtle but noticeable. No tarnish after 3 months of daily use. Obsessed."
Posted: 10 days ago
"Got the Pro Model with custom engraving for my partner’s birthday. They cried. The packaging was eco-luxurious, and the rhodium shine is unreal. 10/10."
Posted: 3 weeks ago
"Love the look and comfort. Only issue: wish the backing was slightly tighter—one earring slipped out during a long shift. Otherwise, flawless."
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