FRAME SIZE (MM) 50 18 36 140 Frame size: Small · View Size Guide
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Try Frame on Your FaceBring a refined two-tone character to everyday eyewear with the Sterling Bluecrest Half-Rim Rectangle Eyeglasses. Designed for men, this frame combines a clean rectangular silhouette with a sophisticated Silver metallic front and contrasting Blue temples.
The half-rim construction creates a visually lighter lower lens profile while maintaining a defined rectangular shape. The contrasting temple color adds a contemporary touch without compromising the professional character of the frame.
The Sterling Bluecrest Half-Rim Rectangle Eyeglasses can be customized with prescription lenses according to individual vision requirements. For semi-rimless construction, lens selection should be based on the frame design and fitting requirements.
The polished Silver front gives the frame a clean and professional appearance, while the Blue temples introduce a subtle contrast that makes the eyewear more distinctive. This combination works particularly well for men who want something more expressive than an all-metal frame while maintaining an understated aesthetic.
The rectangular silhouette provides clear definition around the eyes, while the open lower lens profile creates a lighter visual appearance than conventional full-rim eyewear. This balance makes the frame suitable for both formal and everyday settings.
The metal construction and adjustable nose pads are designed for practical everyday use and personalized positioning. The half-rim profile keeps the frame visually streamlined while retaining the structured character of the rectangular shape.
The Sterling Bluecrest combines professional rectangular geometry with a distinctive Silver-and-Blue color combination. It is an ideal choice for men who want refined optical styling with a subtle contemporary detail.
Pair the frame with your preferred prescription lens configuration to create personalized eyewear suited to your vision and lifestyle requirements.
Nations Optics offers customizable eyewear designed around individual vision requirements and personal style. Select the appropriate lens configuration and personalize your eyewear for everyday use.
| Color | Brown |
|---|---|
| Glasses Size | Medium |
| Eyewear Type | Half Rim |
| Eyewear Shape | Rectangular |
| Front Rim Material | Carbon Fiber |
| Temple Material | Acetate |
| Size In MM | 50-18-36-140 Size Guide |
| Est. Wt. Grams(incl. Glasses) | 21.00 |
Rimless frames require holes drilled directly into the lens to attach the frame. Regular lenses can easily crack or shatter at these drill points, which could be unsafe for your eyes.
Polycarbonate lenses are 10x more impact resistant than standard lenses — they won't crack during drilling or from accidental drops. They're virtually unbreakable and lightweight.
We use them for rimless frames purely for your safety and lens longevity — so you never have to worry about cracked or broken lenses.
Frame quality
Every frame listed on our website passes a thorough quality check before it goes live. We inspect, measure, and verify each model — so the specs you see on the product page are exactly the specs you receive.
What we check on every frame
Hinges are tested for flex strength and snap-back precision. Only frames meeting minimum flex cycle standards are listed.
Flex testedNose pads are checked for material finish, grip texture, and secure attachment — ensuring all-day comfort without slipping.
Comfort verifiedMetal frames are verified for alloy grade, finish uniformity, and resistance to corrosion and bending under normal use.
Grade verifiedSheet frames are inspected for surface clarity, colour consistency, and resistance to warping or surface cracking.
Material inspectedLens width, bridge width, and temple length are physically measured in mm and verified against the product page listing.
mm accurateEach frame's weight is measured on a precision scale and listed on the product page — so you know exactly what to expect.
Gram accurateIf you receive a frame that does not match the listed specifications — in material, size, or weight — we will replace it or refund you in full within 10 days of delivery. No arguments, no hassle.
Frequently asked
Rimless eyewear
Yes — and it is easier than you think. Nations Optics offers a free custom lens shape selector on every polycarbonate lens product page, built specifically for rimless frame wearers.
Rimless frames require holes to be drilled directly into the lens to hold the frame in place. Standard lens materials can crack or shatter at these drill points — which is why Nations Optics exclusively uses polycarbonate lenses for all rimless frames. Polycarbonate is 10x more impact resistant than regular lenses, virtually unbreakable, and handles precision drilling without weakening — keeping your eyes safe and your lenses lasting longer.
When you order a polycarbonate lens on any product page, you will see a "Choose Lens Shape" button. Select the shape that matches your rimless frame — Aviator, Butterfly, Rectangular, Oval, Square, and more — and our team will precision-cut your lenses to fit that exact shape. If your order also includes a rimless frame from our collection, the same shape is automatically applied and fitted for you.
Why polycarbonate only
Rimless frames require drilling directly into the lens. Only polycarbonate can handle this without cracking — keeping your lenses safe and durable.
Where to find it
On every polycarbonate lens product page, tap "+ Choose Lens Shape" before adding to cart. Pick your shape and we handle the rest.
No extra charge
Custom lens shape cutting is included at no additional cost. The price you see is the price you pay — shape selection is completely free.
Select your shape on the product page. If your order includes a rimless frame, the same shape is precision-cut and fitted directly into your frame before dispatch — all included in your order price.