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The Charmant Pure Titanium TI8177 Eyeglasses bring Japanese precision engineering to a versatile rectangle frame that works from the office to the weekend. Built from 100% pure titanium, these frames weigh significantly less than standard metal eyewear while delivering the strength and flexibility titanium is known for.
Why Pure Titanium Matters
Charmant has been a pioneer in titanium eyewear since the 1980s, and they developed their own titanium alloys and the specialized machinery needed to work with them. Pure titanium frames are roughly 48% lighter than conventional metal frames, which means less pressure on your nose and ears during all-day wear. The material is naturally hypoallergenic—no nickel, no skin irritation—and resists corrosion from sweat, facial oils, and humidity far better than standard metals.
The TI8177 features a full-rim rectangle design with a 19mm bridge and clean metal temples. You can choose from four finishes: GP (gold), Brown, Gray, and Tortoise, across three lens sizes (52mm, 54mm, and 56mm eye width) to match different face widths. Rectangle frames like this one suit round and oval face shapes particularly well, adding definition without looking too angular.
Prescription-Ready and Built to Last
These frames accept single-vision, progressive, and bifocal prescription lenses. Titanium's high strength-to-weight ratio allows the frame to stay thin and light even with stronger prescriptions. The material's flexibility means the frame can bend under stress and return to its original shape—helpful if you're hard on your glasses. With proper care, quality titanium frames typically last 5 to 7 years, outlasting most plastic and standard metal options.
The TI8177 ships with adjustable nose pads for a custom fit. At just over $100, it sits in the accessible range for Japanese-made pure titanium eyewear, balancing Charmant's reputation for quality with everyday value.
Product Details
Product DetailsModel
TI 8177Shape
Gender
Material
Bridge Type
Rim Type
Age Group
Color Details
Color DetailsFrame Color
GoldColor Code
GPColor Description
Gep
Frame Color
BrownColor Code
BRColor Description
Brown
Frame Color
GrayColor Code
GRColor Description
Gray
Frame Color
GoldColor Code
GPColor Description
Gep
Frame Color
TortoiseColor Code
TTColor Description
Tortoise
Frame Color
GrayColor Code
GRColor Description
Gray
Frame Color
BrownColor Code
BRColor Description
Brown
Frame Color
TortoiseColor Code
TTColor Description
Tortoise
Frame Color
BrownColor Code
BRColor Description
Brown
Frame Color
GoldColor Code
GPColor Description
Gep
Frame Color
GrayColor Code
GRColor Description
Gray
Frame Color
TortoiseColor Code
TTColor Description
Tortoise
Size Details
Size DetailsLens Width
52mmBridge Width
19mmTemple Length
140mmSize
5219-140
Lens Width
52mmBridge Width
19mmTemple Length
140mmSize
5219-140
Lens Width
54mmBridge Width
19mmTemple Length
140mmSize
5419-140
Lens Width
56mmBridge Width
19mmTemple Length
145mmSize
5619-145
Lens Width
54mmBridge Width
19mmTemple Length
140mmSize
5419-140
Lens Width
56mmBridge Width
19mmTemple Length
145mmSize
5619-145
Lens Width
54mmBridge Width
19mmTemple Length
140mmSize
5419-140
Lens Width
56mmBridge Width
19mmTemple Length
145mmSize
5619-145
Lens Width
56mmBridge Width
19mmTemple Length
145mmSize
5619-145
Lens Width
54mmBridge Width
19mmTemple Length
140mmSize
5419-140
Lens Width
52mmBridge Width
19mmTemple Length
140mmSize
5219-140
Lens Width
52mmBridge Width
19mmTemple Length
140mmSize
5219-140
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Frequently Asked Questions
Are the Charmant TI8177 frames hypoallergenic?
Yes. These frames are made from 100% pure titanium, which is naturally hypoallergenic and nickel-free. Titanium is biocompatible—the same material used in medical implants—so it won't cause skin irritation or allergic reactions at contact points like the nose pads and temples, even during extended wear.
Can I get prescription lenses in the Charmant TI8177?
Absolutely. The TI8177 is prescription-ready and accepts single-vision, progressive (no-line bifocal), and traditional bifocal lenses. Titanium's strength allows the frame to support a wide range of prescription strengths, and the three available sizes (52mm, 54mm, 56mm) help ensure proper optical centering for your prescription.
How much do these titanium frames weigh?
Pure titanium frames are exceptionally lightweight—typically 40-48% lighter than standard steel or metal alloy frames. While the exact weight of the TI8177 depends on the size you choose, most wearers report that titanium frames feel almost weightless, reducing pressure on the nose and ears even after wearing them all day.
What face shapes work best with rectangle frames?
Rectangle frames like the TI8177 are ideal for round and oval face shapes, where the straight lines add definition and visual balance. They also complement heart-shaped faces by balancing a wider forehead. The clean, structured look works well in both professional and casual settings.
How durable are Charmant Pure Titanium frames?
Very durable. Titanium has a high strength-to-weight ratio and superior corrosion resistance compared to other eyewear metals. Industry studies show titanium frames typically last 5 to 7 years with regular use. Titanium is also flexible—it can bend significantly without breaking and return to its original shape, making these frames resilient to everyday stress.
What's the difference between the TI8177 and other Charmant models?
The TI8177 is a classic rectangle frame with a 19mm bridge, available in three sizes (52, 54, 56mm). The similar TI8172 offers a slightly smaller fit with sizes starting at 51mm, while the TI10782 features a more squared lens shape and comes in only two sizes (53mm and 55mm). All three are pure titanium full-rim frames at similar price points, so the choice comes down to preferred lens shape and sizing.
Compare With Similar Frames
How the Charmant Pure Titanium TI8177 Eyeglasses stacks up against the closest alternatives we carry.
- Offers a smaller 51mm size option for narrower faces
- Same pure titanium construction and quality
- Identical color options (Brown, Gep, Gray, Tortoise)
- More squared lens shape for a bolder, modern look
- Unique color options including Olive and White Gold
- Same pure titanium quality and lightweight comfort
Read the full comparison
Charmant TI8177 vs TI8172 vs TI10782: Which Rectangle Titanium Frame Is Right for You?
All three models come from Charmant's Pure Titanium collection and share the same core benefits: 100% pure titanium construction, hypoallergenic properties, exceptional lightness, and corrosion resistance. The differences come down to sizing, lens shape, and color options.
Size and Fit
The TI8177 offers the most size flexibility with three options: 52mm, 54mm, and 56mm eye widths, paired with temple lengths of 140mm (52 and 54) or 145mm (56). This range covers narrow to wider faces. The TI8172 runs slightly smaller overall, with sizes at 51mm, 53mm, and 55mm—ideal if you have a narrower face or prefer a more compact fit. The TI10782 offers only two sizes (53mm and 55mm), which may limit fit options for some wearers.
Lens Shape and Style
The TI8177 and TI8172 both feature classic rectangle lenses with clean, professional lines that suit round and oval faces. The TI10782 has a more squared lens shape, giving it a slightly bolder, more contemporary look. If you want a traditional rectangle that works in any setting, the TI8177 or TI8172 are safer bets. If you prefer a modern edge, the TI10782 stands out.
Color Options
The TI8177 and TI8172 share the same four finishes: Brown, Gep (gold), Gray, and Tortoise. The TI10782 offers a different palette—Brown, Gray, Olive, and White Gold—giving you more unique color choices if you want something beyond the standard metallics.
Our Recommendation
Choose the TI8177 if you want the widest range of sizes and a versatile rectangle frame that works for most face shapes. Pick the TI8172 if you have a narrower face or prefer a slightly smaller overall fit. Go with the TI10782 if you like a squared lens shape and want access to unique colors like Olive or White Gold. All three deliver the same Japanese-made titanium quality at the same price point—it's really about finding the best fit and look for your face.
At a Glance
Charmant Pure Titanium TI8172 Eyeglasses
Pros:
- Offers a smaller 51mm size option for narrower faces
- Same pure titanium construction and quality
- Identical color options (Brown, Gep, Gray, Tortoise)
Cons:
- Slightly smaller overall proportions may not suit wider faces
- Less size flexibility (51, 53, 55mm vs 52, 54, 56mm)
Charmant Pure Titanium TI10782 Eyeglasses
Pros:
- More squared lens shape for a bolder, modern look
- Unique color options including Olive and White Gold
- Same pure titanium quality and lightweight comfort
Cons:
- Only two size options (53mm and 55mm) vs three in the TI8177
- Squared shape may not suit all face types as well as classic rectangle