A rose-pink heart wrapped in chains, pierced by spikes, and fused with mechanical gears. Rose Heartcore is where softness meets steel—sweet but spiked, emotional yet armored. Handcrafted from eco-friendly Japanese resin and stainless steel, every piece is uniquely made to order.
Made to order: 2 working days
*For your reference, sizes S and M are generally recommended for women, and size L is typically suitable for men.
If the wearer has a fuller neck or prefers a looser fit, we recommend sizing up for comfort.
Custom lengths are available upon request—please leave a note at checkout.
Rose Heartcore necklace
Size guide
Because height, bust, and neck circumference all affect where the necklace sits, we’ve included both height and bust references. This way, even if you don’t measure your neck, you can easily choose the best fit and avoid it feeling too tight or too loose.
S (33cm / 13” + 5cm / 2” extender)
Neck: 30–33cm (11.8”–13”)
Women: Height ≤160cm (≤5’3”), Bust ≤82cm (≤32.3”)
Men: Height ≤170cm (≤5’7”), Bust ≤90cm (≤35.4”)
Fit: Snug choker fit, highlights the neckline
M (36cm / 14.2” + 5cm / 2” extender)
Neck: 33–36cm (13”–14.2”)
Women: Height 158–168cm (5’2”–5’6”), Bust 80–88cm (31.5”–34.6”)
Men: Height 168–175cm (5’6”–5’9”), Bust 88–96cm (34.6”–37.8”)
Fit: Slightly close to the neck, comfortable & face-flattering
L (42cm / 16.5” + 5cm / 2” extender)
Neck: 36–40cm (14.2”–15.7”)
Women: Height 165–172cm (5’5”–5’8”), Bust 85–95cm (33.5”–37.4”)
Men: Height 172–180cm (5’8”–5’11”), Bust 92–102cm (36.2”–40.2”)
Fit: Sits above collarbone, great for layering
XL (50cm / 19.7” + 5cm / 2” extender)
Neck: 40–45cm (15.7”–17.7”)
Women: Height ≥170cm (≥5’7”), Bust ≥95cm (≥37.4”)
Men: Height ≥178cm (≥5’10”), Bust ≥105cm (≥41.3”)
Fit: Falls on or slightly below collarbone, relaxed style