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The Charmant Pure Titanium TI8172 Eyeglasses bring Japanese precision engineering to a classic rectangle frame. Built from 100% pure titanium—not an alloy—these frames deliver the lightweight comfort and hypoallergenic properties that have made Charmant a pioneer in titanium eyewear since the 1980s.
Pure titanium frames are 48% lighter than conventional metal eyeglasses, so the TI8172 sits comfortably on your nose and ears even during long workdays or extended screen time. The full-rim construction provides secure lens retention and a clean, professional look that works equally well in the office or on the weekend. The rectangle shape offers a versatile silhouette that complements most face shapes, particularly round and oval faces.
Titanium's natural corrosion resistance means these frames won't tarnish, turn green, or degrade from sweat or humidity. The material is also biocompatible and nickel-free, making the TI8172 an excellent choice if you have sensitive skin or metal allergies. Available in four refined finishes—Brown, Gep (gold electroplate), Gray, and Tortoise—and three lens widths (51mm, 53mm, and 55mm) to fit a range of face sizes.
These frames are prescription-ready and compatible with single-vision, progressive, and high-index lenses. The durable construction and adjustable nose pads ensure a secure, customized fit that holds up to daily wear. Charmant's commitment to quality means every detail—from the temple hinges to the bridge—is engineered for longevity.
Product Details
Product DetailsModel
TI 8172Shape
Gender
Material
Bridge Type
Rim Type
Age Group
Color Details
Color DetailsFrame Color
BrownColor Code
BRColor Description
Brown
Frame Color
TortoiseColor Code
TTColor Description
Tortoise
Frame Color
GoldColor Code
GPColor Description
Gep
Frame Color
GoldColor Code
GPColor Description
Gep
Frame Color
TortoiseColor Code
TTColor Description
Tortoise
Frame Color
TortoiseColor Code
TTColor Description
Tortoise
Frame Color
BrownColor Code
BRColor Description
Brown
Frame Color
GrayColor Code
GRColor Description
Gray
Frame Color
GoldColor Code
GPColor Description
Gep
Frame Color
GrayColor Code
GRColor Description
Gray
Frame Color
BrownColor Code
BRColor Description
Brown
Frame Color
GrayColor Code
GRColor Description
Gray
Frame Color
GrayColor Code
GRColor Description
Gray
Frame Color
GoldColor Code
GPColor Description
Gep
Frame Color
TortoiseColor Code
TTColor Description
Tortoise
Frame Color
BrownColor Code
BRColor Description
Brown
Size Details
Size DetailsLens Width
53mmBridge Width
18mmTemple Length
140mmSize
5318-140
Lens Width
55mmBridge Width
18mmTemple Length
145mmSize
5518-145
Lens Width
53mmBridge Width
18mmTemple Length
140mmSize
5318-140
Lens Width
51mmBridge Width
18mmTemple Length
140mmSize
5118-140
Lens Width
51mmBridge Width
18mmTemple Length
140mmSize
5118-140
Lens Width
53mmBridge Width
18mmTemple Length
140mmSize
5318-140
Lens Width
55mmBridge Width
18mmTemple Length
145mmSize
5518-145
Lens Width
51mmBridge Width
18mmTemple Length
140mmSize
5118-140
Lens Width
55mmBridge Width
18mmTemple Length
145mmSize
5518-145
Lens Width
53mmBridge Width
18mmTemple Length
140mmSize
5318-140
Lens Width
51mmBridge Width
18mmTemple Length
140mmSize
5118-140
Lens Width
55mmBridge Width
18mmTemple Length
145mmSize
5518-145
Bridge Width
18.00Temple Length
150.00Size
5718-150
Bridge Width
18.00Temple Length
150.00Size
5718-150
Bridge Width
18.00Temple Length
150.00Size
5718-150
Bridge Width
18.00Temple Length
150.00Size
5718-150
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Frequently Asked Questions
Are the Charmant TI8172 frames prescription-ready?
Yes, the Charmant Pure Titanium TI8172 frames are fully prescription-ready and compatible with all lens types, including single-vision, progressive, bifocal, and high-index lenses. The full-rim design securely holds prescription lenses of varying thicknesses, and the frame can be fitted by any licensed optician.
What makes pure titanium frames better than regular metal frames?
Pure titanium frames like the TI8172 are 48% lighter than conventional metal frames, hypoallergenic (nickel-free), and highly corrosion-resistant. They won't tarnish, turn green from sweat, or cause skin irritation. Titanium is also extremely durable—strong enough for aerospace applications—so these frames resist bending and maintain their shape over years of daily wear.
How do I know which size to choose (51mm, 53mm, or 55mm)?
The size refers to the lens width in millimeters. If you have a smaller or narrow face, choose 51mm. For average or medium faces, 53mm is the most popular choice. If you have a wider face or prefer larger coverage, select 55mm. You can also measure your current glasses—the lens width is usually printed on the inside of the temple.
Are these frames good for people with metal allergies?
Absolutely. Charmant's Pure Titanium frames are made from 100% pure titanium with zero nickel content, making them completely hypoallergenic and biocompatible. Titanium is even used in medical implants because it doesn't cause allergic reactions or skin irritation, so the TI8172 is an excellent choice for anyone with sensitive skin or nickel allergies.
How long do titanium eyeglass frames typically last?
Industry studies show that titanium frames have a median lifespan of 5 to 7 years with regular use, compared to 3 to 5 years for plastic frames. Titanium's superior strength, corrosion resistance, and flexibility mean the TI8172 can withstand daily wear, accidental drops, and environmental exposure far better than conventional materials, making them a cost-effective long-term investment.
What face shapes work best with rectangle eyeglass frames?
Rectangle frames like the TI8172 are most flattering on round and oval face shapes, as the angular lines add definition and balance to softer facial features. They also work well on heart-shaped faces. The classic rectangle silhouette is versatile and professional, making it a safe choice for most face shapes when sized appropriately.
Compare With Similar Frames
How the Charmant Pure Titanium TI8172 Eyeglasses stacks up against the closest alternatives we carry.
- Same 100% pure titanium construction and hypoallergenic properties
- Similar price range and prescription compatibility
- May offer different color or size options depending on preference
- Identical pure titanium material and construction quality
- Same price point and prescription-ready features
- Alternative rectangle design for customers seeking subtle style variation
Read the full comparison
Charmant Pure Titanium TI8172 vs. Similar Models
If you're considering the TI8172, you may also be comparing it to other rectangle frames in Charmant's Pure Titanium collection. Here's how the TI8172 stacks up against two close alternatives.
TI8172 vs. TI10782
Both frames are built from 100% pure titanium and share the same hypoallergenic, corrosion-resistant properties. The TI10782 is priced slightly lower ($102.57–$104.60) and may offer different color or size configurations. The primary difference is in the frame geometry—the TI8172 has a slightly more traditional rectangle profile, while the TI10782 may have subtly different proportions. If you're deciding between these two, it comes down to which specific measurements and color options better match your face size and style preference. Both are excellent choices for all-day comfort and durability.
TI8172 vs. TI11441
The TI11441 is another rectangle frame at the same $104.60 price point, offering nearly identical material quality and prescription compatibility. The TI11441 has been noted by customers for its long-term durability—one reviewer mentioned wearing the same frames for several years before needing a replacement. The TI8172 offers more size flexibility (51mm, 53mm, and 55mm lens widths) compared to the TI11441's more limited sizing. If fit customization is important, the TI8172's broader size range gives you more options.
Why Choose the TI8172?
The TI8172 stands out for its versatile sizing (three lens widths), four refined color options, and proven track record as a classic Charmant design. It's an excellent choice if you want a professional, understated rectangle frame that will last for years and work with any prescription. The combination of lightweight comfort, hypoallergenic construction, and timeless styling makes the TI8172 a safe, reliable investment for daily wear.
At a Glance
Charmant Pure Titanium TI10782 Eyeglasses
Pros:
- Same 100% pure titanium construction and hypoallergenic properties
- Similar price range and prescription compatibility
- May offer different color or size options depending on preference
Cons:
- Slightly different frame geometry may not suit all face shapes equally
- Fewer customer reviews available compared to the TI8172
- Design differences are subtle—choice comes down to minor aesthetic preference
Charmant Pure Titanium TI11441 Eyeglasses
Pros:
- Identical pure titanium material and construction quality
- Same price point and prescription-ready features
- Alternative rectangle design for customers seeking subtle style variation
Cons:
- Very similar to the TI8172—differences are primarily cosmetic
- Limited size availability (54mm only based on product data)
- Choosing between these models is largely a matter of personal taste