Perfectly Match Your Love and Commitment with His or Her Individuality
Grafner’s staff and on-site gemologist are delighted to assist you in customizing the perfect gift or engagement ring for your perfect someone. Stop in today and choose from an array of gemstones, rare diamonds, metals and styles to bring your imagination to life. Grafner Brothers is Pittsburgh’s premiere jewelry boutique for exquisite engagement and bridal sets, fine gemstones, loose diamonds and unique jewelry.
How Rare Are Diamonds?
Some romantics may answer differently, but here is the science behind the sparkle:
Only 1 in 200 Kimberlite pipes contains diamonds in economically viable quantities. Once located, diamonds can be extremely difficult to mine. Approximately 250 tons of ore must be mined and processed with blasting, crushing and advanced X-ray techniques to produce a single one-carat, polished, gem-quality diamond. Although more than 100 million carats are mined each year, only a quarter are of gem quality, while the rest are industrial grade. Large diamonds are quite rare, with those of one carat or more representing just 1% of all gem-quality diamonds. For perspective, consider that all the polished gem diamonds in the world could fit into a double-decker bus!