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Terminology Key
Gold Marking Meaning
K Karat
KP Karat Plumb
9K, .375, 3796 9 Karat
10K, .416, .417, 41% 10 Karat
14K, .583, .585, 58% 14 Karat
18K, .750, 75% 18 Karat
22K, .916 .917, 91% 22 Karat
24K, Pure Gold 24 Karat
K.P., GP, KGP, GEP, HGP, HGE, EP, GE Gold Plated
KGF, GF, 1/20th Gold Filled
925 Gold Plated Silver
Silver Marking Meaning
.925, Ster, Sterling, SS, Mexico Sterling Silver
.900, Coin Silver, Pure Coin 90% Coin Silver
.800 80% Coin Silver
EP, EPS, EPNS Silver Plated
Oneida, Rogers, Triple Silver, International Silver, Community Silver, 1S, CS Silver Plated
.999, Fine Silver Pure Silver
Platinum Marking Meaning
Plat, Pt., .950 95% Platinum
.900 Pt. or .900 Plat. 90% Platinum
.850 Pt. or .850 Plat. 85% Platinum
Certified IGI Diamond Buyer and Seller
Inventory  >  Certified Diamonds  >  IGI


Want to buy a diamond certified by IGI in Columbus, Ohio? To feel confident when buying loose diamonds for an engagement ring or wedding band, a pair of diamond earrings, or a pendant necklace and tennis bracelet, read the IGI report. The International Gemological Institute (IGI) is the world's largest independent gem certification and appraisal institute for diamonds, colored gemstones and other jewelry.

A diamond’s value is based on its gemological makeup, natural rarity and finished quality. IGI Diamond Reports give an accurate assessment of a diamond's cut, color, clarity, and carat weight according to strict international standards.

What to look for when buying an IGI certified diamond:

* Cut: this is what makes your diamond sparkle
* Color: based on the absence of color, where purity matters
* Clarity: internal characteristics like inclusions and blemishes
* Carat Weight: choosing will depend on the type of jewelry and your budget

Buy IGI certified diamonds from our Columbus, Ohio, inventory. IGI is a trusted name for the impartial grading of diamonds and Repasky Gold & Silver sells certified IGI diamonds for engagement and wedding rings, necklaces, earrings and more! We sell locally, in our stores, and also on our website.

Let us pay you for your unwanted diamonds. Repasky Gold & 
Silver pays top dollar for your gold, silver, diamonds and 
jewelry. Locations in Clintonville, Worthington, Dublin, 
Powell & Westerville.
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