Emerald vs Onyx vs Grand Diamond: Which Thread for Your Face Shape? — VERZO CLINIC Bangkok

TL;DR: Emerald threads use a PLLA+PCL blend with molding cog design for collagen building plus lifting, averaging 73,000 THB. Onyx threads are PDO with powerful bidirectional barbs for strong jawline lifting, averaging 50,000 THB. Grand Diamond threads use premium Mint 170mm PCL cogs for the longest-lasting structural lift, averaging 111,000 THB.

Written by Dr. Waleerat Thaweebanchongsin, licensed aesthetic medicine specialist with over 10 years of specialized experience in thread lifting procedures. VERZO CLINIC near BTS Ekkamai, Sukhumvit Road. Free consultations via LINE @verzo.

Last updated: April 2026

Frequently Asked Questions

What is the difference between Emerald, Onyx, and Grand Diamond threads?

Emerald threads use a PLLA+PCL blend with molding cog design for collagen building plus lifting, averaging 73,000 THB. Onyx threads are PDO with powerful bidirectional barbs for strong jawline lifting, averaging 50,000 THB. Grand Diamond threads use premium Mint 170mm PCL cogs for the longest-lasting structural lift, averaging 111,000 THB.

Which thread brand is best for a round face?

For round faces seeking a V-line contour, Onyx or Emerald threads work best because their cog design excels at repositioning the lateral cheek and jawline tissue upward and inward. The strong bidirectional barbs provide the holding power needed to reshape a round face into a more defined oval or V-shape.

How long does each thread brand last?

Onyx (PDO) threads provide mechanical support for 6-8 months with collagen benefits lasting 12-18 months. Emerald (PLLA+PCL) threads support lasts 18-24 months. Grand Diamond (PCL) threads provide the longest support at 24-36 months. All three continue stimulating collagen beyond their absorption timeline.

Is Grand Diamond worth the higher price?

Grand Diamond is worth it for patients who prioritize longevity and minimal maintenance. At 111,000 THB average, it costs roughly twice as much as Onyx but lasts 3-4 times longer before needing maintenance. For patients who travel to Bangkok specifically for treatment, fewer visits can offset the higher per-session cost.

Can different thread brands be combined in one session?

Yes, combining thread brands is an advanced technique that Dr. Waleerat frequently employs. For example, Grand Diamond threads along the jawline for long-lasting structural lift combined with Emerald threads in the midface for collagen building creates a comprehensive result addressing multiple concerns.

Which thread is best for first-time patients?

Onyx threads are often recommended for first-time thread lift patients due to their excellent lift-to-cost ratio, predictable PDO absorption, and proven safety profile. They provide a strong lifting result that helps patients understand what thread lifting can achieve before potentially upgrading to longer-lasting options.

How many threads of each brand are typically used?

Onyx typically uses 6-10 threads per session for full-face lifting. Emerald uses 4-8 threads due to its longer cog design. Grand Diamond typically uses 4-6 threads as each thread provides more lifting power per unit. The exact count depends on face anatomy and desired result.

Which thread brand has the least downtime?

All three cog thread brands have similar recovery timelines — 5-7 days of noticeable swelling with full social recovery by day 10-14. Grand Diamond may have slightly more initial tightness due to the larger thread diameter. Onyx and Emerald have comparable downtime profiles.