18g - 16g Internally Threaded Titanium 2.5mm Flat Opal Top - Price Per 1

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SKU derm200-anod
Weight 0.0010
Brand Painful Pleasures
Material Titanium 6Al-4V-Eli ASTM F-136
Threading Internal 0.9mm

2.5mm Flat Opal Tops in 13 Stone Colors & 27 Anodized Titanium Setting Options, for 18g or 16g Internally-Threaded Body Jewelry (Price Per 1)

These gorgeous 2.5mm flat opal tops are available in your choice of 13 opal color options. Each one comes standard with a high-polish titanium setting, but we can anodize the setting to one of 26 other color options for a small fee, if desired.

Each of these flat opal stone tops for 18g or 16g internally-threaded body jewelry measures 2.5mm across. The titanium base and its internal 0.9mm threaded post are made from a single piece of implant-grade titanium, and then the opal stone is carefully inset in the top of the titanium setting. Pair these 2.5mm flat opal tops with your favorite labret stud, circular barbell, dermal anchor, or other 18g or 16g body jewelry with matching internal 0.9mm threading.

These 2.5mm flat opal stone tops are sold individually (price per 1) and separately from our body jewelry shafts and anchors. They're bagged 10 per color per bag, so if you want to take advantage of our quantity price breaks, please purchase each color in increments of 10. For instance, you can save on 10 blue green opals and 10 pink opals, but not on 5 of one and 15 of the other.


  • Materials: Implant-Grade Titanium & Synthetic Stabilized Opal (man-made in Japan)
  • Opal Top Diameter: 2.5mm (~3/32")
  • Post Length: 2mm (3/32")
  • Threading: Internal 0.9mm
  • Price Per 1 Flat Opal Top Set in Titanium

Details About Our Synthetic, Man-Made Opals:

Synthetic Stabilized Opal
Elements: 80% SiO2.nH2O + 20% Resin
Hardness (Mohs): 4-5
Specific Gravity: 1.80-1.90
Heat Resistance: 130ºC
Rough Opal Thickness: 14-18mm (9/16" - 23/32")
Made in Japan

Related Links:

18g Steel Labret Posts
18g Steel Small Back Labret Posts
16g Steel Labret Posts

18g Compatible Jewelry:

18g Stainless Steel Labret Post
18g Stainless Steel Small Back Labret Post

16g Compatible Jewelry:

16g Stainless Steel Rounded Back Labret Post
16g Stainless Steel Flat Back Labret Post
16g Titanium Flat Back (4mm Disc) Labret Post 
16g Titanium Flat Back (2.5mm Disc) Labret Post 
16g Stainless Steel Straight Barbell
16g Titanium Surface Barbell 

Size Table

Standard Body Jewelry Measurements

The following webchart is a quick reference guide for standard body jewelry measurements and how to measure basic body jewelry. Please print this webchart to help measure your body jewelry accurately.

Size Reference Chart

Visit our PainfulPleasures Infocenter for additional body jewelry information. There, you will find detailed articles on standard body jewelry sizes, how to measure body jewelry, basic body jewelry, and more.

Standard Body Jewelry Threading

Ensure compatibility between standard (non-custom) PainfulPleasures body jewelry parts using the tables below. More information on threading, including custom thread patterns, can be found in our Threading Infocenter article.

Internally threaded jewelry has a threaded post on the top and/or end, which is then inserted into a threaded hole in the barbell shaft.

Internal Thread Patterns by Gauge


18g, 16g

14g, 12g


Internal Thread Pattern

0.8mm or 0.9mm



Externally threaded jewelry has a threaded post on the barbell shaft, which is then inserted into a threaded hole in the top and/or end.

External Thread Patterns by Gauge


18g, 16g

14g, 12g, 10g

External Thread Pattern



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