Will this work to close jump rings?

Yes, it will solder close jump rings

Buying for school. need to solder solitaire rings because normal solder isn't working the best. good enough?

For the life of me can't understand why anyone would answer, in some form, "I don't know". How the paste works with the solder used needs to be tested. I did. Wife makes 3D dream catchers using 4mm dia wire rings, in various diameters 6"-18" (all are coated) from craft stores. Rosin (or flux) core solder work ok but I've found this SOLDER-IT SILVER BEARING SOLDER PASTE used with solid LEAD FREE SILVER BEARING solder holds the best using a butane torch. Key is, one must heat what's being soldered after the paste is used and before the solder is applied. Temperature is everything. If the base material can be heated with a soldering iron by all means use it as the solder flows and bonds towards the base material.

what type of metal is left behind?, silver?

I only used a small amount when I created a amethyst and sterling dragonfly for a client, still have quite abit of the soldering silver left. I used a low heat soldering iron (silver melts at a fairly low temperature)

Could I use this on gold costume jewelry jump rings or will the silver look too obvious? I am at a loss as to what to use for the jump rings.

You could use it on the gold costume jewelry, however, it would be obvious it is not gold. You would better using Solder Paste With Flux Yellow Gold 14k 1 Dwt.

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Solder-It Silver Bearing Wire Soldering Paste Welding Jewelry

Product ID: 286638156

Details

Brand
Solder-It
Item dimensions L x W x H
16.3 x 4.6 x
Item weight
18 g
Material
Silver
Number of Packs
1

💪10,000-25,000 PSI tensile strength

🧪Non-toxic, lead & heavy metal free

⚙️Compatible with almost any metal

₨727

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Description

⚡ Elevate your craft with silver-strong, no-fail soldering power!

SAFE SUSTAINABLE - Non-toxic paste free from lead, cadmium, antimony, and zinc for peace of mind
INSTANT SET FORMULA - Fast curing reduces soldering failures and speeds up your projects
BRILLIANT SILVER FINISH - Keeps joints bright and corrosion-resistant, never blackening your work
PRECISION NO MESS DISPENSING - Syringe design ensures clean, waste-free application every time
UNIVERSAL METAL COMPATIBILITY - Works seamlessly on stainless steel and nearly all metals for versatile use

Solder-It SP-7 is a premium silver-bearing solder paste designed for professional-grade metalwork and electronics. Featuring a no-mess syringe applicator, it delivers a bright, corrosion-resistant finish with tensile strength up to 25,000 PSI. Its instant-setting, low-melting formula works on nearly all metals including stainless steel, while being non-toxic and free from harmful heavy metals—perfect for precision soldering with confidence.

Specifications

ASIN	B000OVI0IY
Best Sellers Rank	#192,131 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #400 in Solder, Solder Fluxes & Pastes
Brand Name	Solder-It
Compatible Material	Metal
Customer Reviews	4.1 4.1 out of 5 stars (744)
Item Dimensions	16.3 x 4.6 x 1.3 centimeters
Item Type Name	Silver Wire
Item Weight	18 g
Manufacturer	Solder-It
Material Type	Silver
Model	MSW-IS-SP-7
Number of Items	1
Number of Packs	1
Part Number	SP-7
UPC	384920590606

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₨727

Duties & taxes included

In stock

Sold byAmazon SeychellesDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Seychelles.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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