Sell or Pawn Your Diamond Jewelry at All Island Jewelry & Loan

We Buy Diamonds and Diamond Jewelry

Diamonds can be very valuable depending on some characteristics the diamonds may have. The shape, cut, color, clarity, and carat weight all play an important role in the overall value of your diamond.

All Island Jewelry & Loan has more than 30 years of experience in the gold, jewelry, and diamond business, and we can offer you the best prices for your diamonds and diamond jewelry.

In addition to personalized customer service, we offer on-site evaluations so that your jewelry is always in sight. We will walk you through the analysis process to properly evaluate the correct market value of your diamonds and diamond jewelry, so you can be confident that you have received the best price for your diamonds. Whether you are looking to sell loose diamonds, or sell or obtain a pawn loan for your diamond jewelry or a single diamond engagement ring, we will make sure your needs are met.


All Island Jewelry & Loan also buys gold, silver, coins and currency, watches, jewelry, and other collectibles. Whether you are looking to sell your valuables or to obtain a pawn loan, we pay top dollar and pride ourselves on a solid reputation of integrity. Just bring your items to our store in Centereach, Long Island, New York and our experienced staff will give you an estimate of the value of your unwanted gold or jewelry.

Here is a quick summary of our most popular selling and pawn loan categories:


GOLD is usually stamped 10K, 14K, 18K. Gold is bought by the pennyweight (dwt). There are 18.2 dwt to the avoir oz. or 20 to the troy oz. Dental gold must be yellow and is usually around 16k. Items stamped 1/20 12k – H.G.E. are gold plated and worth very little.  We test all gold, marked and unmarked.  If there are diamonds or other precious stones in the item brought in, we will add their value to the weight of the gold.  Learn more.


Items must be stamped “Sterling” .925 – .900 – .800. Many items stamped Sterling are weighted with plaster (i.e. candlesticks) and must be broken to get the true weight. Knives which have sterling handles are figured at 1/3 – 1/2 oz. each.

Coins and Currency

All Island Jewelry & Loan deals in all types of U.S. and Foreign Coins. U.S. 90% silver coins are dimes, quarters, or halves dated 1964 or older. U.S. 40% clad coins are halves only dated 1965-1969. War Nickels are dated 1942 – 1945 with large mint marks only. Silver dollars were minted up to 1935. We buy all early U.S. & foreign coins and paper monies, but coins that are damaged in any way are almost unsaleable, but may have scrap value. The better condition the higher the price. We pay top dollar on all gold and silver coins.


Many common gold watches made in the last 20 to 30 years are probably worth their weight in gold only, but All Island Jewelry & Loan will examine the watch to determine if it has any value above melt. Hunting case watches (flip Covers) that are working or repairable are valuable. Repeater watches which chime the time are very valuable – often worth over $1,000. Old silver watches are also worth a premium. Particularly valuable watches are Rolex; Cartier; Tiffany; Omega; Patek; Phillipe; Piaget.

If you have something not listed here, bring it to our store in Centereach, Long Island, New York and let us tell you what the value is for your item.


– 10k / 14k / 16k / 18k / 22k / 24k Gold Jewelry
– Bracelets
– Necklaces
– Tri-Color Gold
– Chains
– Rings
– Gold Wristwatches
– Gold Pocket Watches
– Charms
– Charm Bracelets
– Class Rings
– Cameos
– Dental Gold