Black Agate Opening Box Necklace in Stainless Steel, 20 Inch
Chain length guide

Product information
- MetalWhite stainless steelPolished
- StoneAgate
- Size20 inChain length
- Weight9.64 gTotal item weight
Description
A stainless steel necklace finished with a polished black agate box pendant that opens, suspended from a 20-inch chain.
Agate has been used in personal adornment for thousands of years and is one of the oldest documented gemstones in jewelry, valued across Mesopotamian, Egyptian, and Greek cultures for its dense banding and deep color. Black agate in particular has long been associated with grounding and quiet strength in lapidary tradition. Locket-style pendants that open share an equally long history as keepsake jewelry — vessels for a photograph, a written note, or a small token carried close.
Key Features
- Crafted in stainless steel with a polished finish
- Set with black agate
- Measures 20 inches long
- Secured by a lobster clasp
- Approximate weight of 9.64 grams
Product detailsWhite stainless steel · Agate · 9.64 g
Metal
- Metal
- White stainless steel
- Finish
- Polished
- Construction
- Opens
Center stone
- Stone
- Agate
- Color
- Black
- Number of stones
- 1
Measurements
- Pendant length
- 24 mm
- Pendant width
- 21 mm
- Chain length
- 20 in
- Chain width
- 2.3 mm
- Clasp
- Lobster (Fancy)
- Weight
- 9.64 g
- Bail
- 10 × 5 mm
Style & design
- Necklace type
- Necklace with Pendants
- Style
- Modern
More
- Brand
- Chisel
- Made in
- China
- Item #
- SJQG-SRN1125-20
Our standards
- Colored gemstones are ethically sourced
Length & fitLength guide · 30-day length exchanges

If the length isn’t right, you can exchange it within 30 days of delivery.
Shipping & returnsFree insured shipping over $99 · 30-day returns
Free, insured shipping on US orders of $99 or more.
Return it within 30 days of delivery, unworn and in its original packaging.
Exchange it within 30 days for another size or another piece.
Covered by our One-Year Limited Jewelry Warranty against manufacturing defects.
What’s in the boxYour necklace in our signature blue padded gift box
- Your necklace
- Our signature blue padded jewelry gift box
- A packing slip with no prices on it
Jewelry careStore each piece on its own in a soft pouch
Store each piece on its own in a soft pouch or lined box, so nothing scratches it.

Recently viewed products
What Our Customers Are Saying
Real reviews from Sophia Jewelers customers, collected by Judge.me.
Stainless Steel Necklaces, answered
Straight answers about stainless steel necklaces. See all Stainless Steel Necklaces
- Free Shipping
- US Orders $99+
- Exchanges
- 30 Days
What affects the price of stainless steel necklaces?
Metal, size, and added details set the price. Stainless steel, titanium, or yellow IP plating, chain width, length, and extras like cubic zirconia, enamel, or a leather cord all play a part. Use the Price filter on this page to set a budget.
Which stainless steel necklace styles are most popular?
Fleur-de-lis and cross necklaces lead the list. Dog tag styles, heart toggle chains, and chunky men's link chains also appear near the top. Shield, sword, and medical ID pieces round out the favorites shoppers pick most.
What is the difference between a curb, box, and cable chain?
Each chain has a different link shape. Curb links lie flat and twisted, box chains are square and smooth, and cable chains use uniform oval links. Pages here include all three, and the mm width tells you how bold the chain looks.
How is a dog tag necklace worn?
A dog tag hangs flat at the center of the chest. It suits casual outfits and layers well over a tee or under an open collar. Some tags here are reversible, so the back shows a second look.
Can a stainless steel necklace work as a gift?
Yes, it makes an easy gift for many tastes. Crosses, hearts, and fleur-de-lis pieces suit a range of styles, and the plain chains work for anyone who likes a clean look. Bold link chains are popular with men's styling.
What does IP plating or antiqued finish mean?
These are surface finishes on the steel. IP plating adds a color, such as yellow, to the steel's surface. Antiqued finishing darkens the recesses so details stand out, while brushed finishing gives a soft, matte texture. See jewelry care for upkeep tips.