DCA GEMOLOGY QUESTIONS AND SOLUTIONS 2025/2026
GRADED A+
✔✔For some customers, the color cycles of greatest interest exist in the world of -
✔✔Fashion
✔✔To make colors work most effectively in jewelry retailing, it's necessary for sales
professionals to learn more about color, gems and - ✔✔Customers
✔✔A mineral type defined by the combination of chemical composition and crystal
structure is - ✔✔a species
✔✔Treated gems were found in the tomb of - ✔✔An Egyptian pharaoh
✔✔A common treatment for blue sapphire is - ✔✔Heating
✔✔Which colored gem is least likely to be treated? - ✔✔Garnet
✔✔Which of the following synthetics is not commonly available in the jewelry industry? -
✔✔Synthetic zircon
✔✔The Egyptians were using glass to imitate emerald and other gems by - ✔✔1000 BC
✔✔Emerald, ruby and sapphire are prime examples of how a gem's value can be
enhanced by - ✔✔Cultural traditions
✔✔When it comes to color, each type of gem has its own unique - ✔✔Range
✔✔The distinction between emerald and green beryl is based primarily on - ✔✔Color
intensity
✔✔In which kind of gem are minor inclusions expected and accepted? - ✔✔Ruby
✔✔In gem cutting, a free-form shape that combines flat facets and curved surfaces is
known as - ✔✔Fantasy cut
✔✔One gem that's rarely seen weighing over 5 carats in fine quality is - ✔✔Tsavorite
✔✔The most famous source of natural saltwater pearls was the - ✔✔Persian Gulf
✔✔Most South Sea cultured pearls are grown in Australia, the Philippines or -
✔✔Indonesia
, ✔✔How many nuclei can be accepted by most of the mussels used for culturing
Chinese freshwater pearls? - ✔✔Up to 50
✔✔A standard step in the processing of Akon's and Chinese freshwater cultured pearls
is - ✔✔Bleaching
✔✔A pearl's color can have up to three separate components- bodycolor, overtone and
- ✔✔Orient
✔✔The average size of Tahitian cultured pearls is about - ✔✔9 millimeters
✔✔Amber is a form of - ✔✔Fossilized resin
✔✔In the 1990s consumer interest in amber was fanned by the blockbuster movie -
✔✔Jurassic Park
✔✔Some coral is now being harvested by - ✔✔Minisubs
✔✔Ammolite is a type of fossilized shell that can display - ✔✔Iridescence
✔✔Archeological digs in Europe have found ivory carved - ✔✔30,000 years ago
✔✔The gem material known as tortoiseshell comes from the - ✔✔Hawksbill sea turtle
✔✔In which setting style does a metal collar wrap around the gem, thus protecting it? -
✔✔Bezel setting
✔✔A dinner-style ring with a large center gem surrounded by tapered baguette
diamonds in a radial pattern is called a - ✔✔Ballerina ring
✔✔Which gold alloy is 50% pure gold? - ✔✔12K
✔✔According to FTC guidelines, the term "platinum" may be used without qualification if
the fineness is at least - ✔✔950
✔✔Which method is a popular way to create custom-made jewelry, and can be adapted
for large-scale production? - ✔✔Casting
✔✔Today's trend in jewelry branding began with growing recognition of designers in the
- ✔✔1970s
✔✔The most common gem species are chalcedony and - ✔✔Quartz
GRADED A+
✔✔For some customers, the color cycles of greatest interest exist in the world of -
✔✔Fashion
✔✔To make colors work most effectively in jewelry retailing, it's necessary for sales
professionals to learn more about color, gems and - ✔✔Customers
✔✔A mineral type defined by the combination of chemical composition and crystal
structure is - ✔✔a species
✔✔Treated gems were found in the tomb of - ✔✔An Egyptian pharaoh
✔✔A common treatment for blue sapphire is - ✔✔Heating
✔✔Which colored gem is least likely to be treated? - ✔✔Garnet
✔✔Which of the following synthetics is not commonly available in the jewelry industry? -
✔✔Synthetic zircon
✔✔The Egyptians were using glass to imitate emerald and other gems by - ✔✔1000 BC
✔✔Emerald, ruby and sapphire are prime examples of how a gem's value can be
enhanced by - ✔✔Cultural traditions
✔✔When it comes to color, each type of gem has its own unique - ✔✔Range
✔✔The distinction between emerald and green beryl is based primarily on - ✔✔Color
intensity
✔✔In which kind of gem are minor inclusions expected and accepted? - ✔✔Ruby
✔✔In gem cutting, a free-form shape that combines flat facets and curved surfaces is
known as - ✔✔Fantasy cut
✔✔One gem that's rarely seen weighing over 5 carats in fine quality is - ✔✔Tsavorite
✔✔The most famous source of natural saltwater pearls was the - ✔✔Persian Gulf
✔✔Most South Sea cultured pearls are grown in Australia, the Philippines or -
✔✔Indonesia
, ✔✔How many nuclei can be accepted by most of the mussels used for culturing
Chinese freshwater pearls? - ✔✔Up to 50
✔✔A standard step in the processing of Akon's and Chinese freshwater cultured pearls
is - ✔✔Bleaching
✔✔A pearl's color can have up to three separate components- bodycolor, overtone and
- ✔✔Orient
✔✔The average size of Tahitian cultured pearls is about - ✔✔9 millimeters
✔✔Amber is a form of - ✔✔Fossilized resin
✔✔In the 1990s consumer interest in amber was fanned by the blockbuster movie -
✔✔Jurassic Park
✔✔Some coral is now being harvested by - ✔✔Minisubs
✔✔Ammolite is a type of fossilized shell that can display - ✔✔Iridescence
✔✔Archeological digs in Europe have found ivory carved - ✔✔30,000 years ago
✔✔The gem material known as tortoiseshell comes from the - ✔✔Hawksbill sea turtle
✔✔In which setting style does a metal collar wrap around the gem, thus protecting it? -
✔✔Bezel setting
✔✔A dinner-style ring with a large center gem surrounded by tapered baguette
diamonds in a radial pattern is called a - ✔✔Ballerina ring
✔✔Which gold alloy is 50% pure gold? - ✔✔12K
✔✔According to FTC guidelines, the term "platinum" may be used without qualification if
the fineness is at least - ✔✔950
✔✔Which method is a popular way to create custom-made jewelry, and can be adapted
for large-scale production? - ✔✔Casting
✔✔Today's trend in jewelry branding began with growing recognition of designers in the
- ✔✔1970s
✔✔The most common gem species are chalcedony and - ✔✔Quartz
