THE NATURAL GEM
NATURAL COLORED GEMSTONES
FINE AND FANCY DIAMONDS
Imprint
A BRIEF OVERVIEW OF GEMSTONES
RUBY
 
Corundum, hardness 9, coloured red by the trace element chrome; the longest used gemstone in human history and arguably the most beautiful, therefore with the highest increase in value.
The Natural Gem Rubin Ruby
Ruby, 4.13 ct,
Mozambique, natural colour
untreated
SAPPHIRE
Corundum, hardness 9, the “brother” of ruby, all colours except red; blue is the most famous, coloured by the trace element cobalt; for investment pink and yellow are also suitable; found in the mines of the legendary Queen of Sheba and thus in demand since Old Testament times; strong increase in value.
The Natural Gem Saphir Blau Sapphire blue
Blue Sapphire, 10.54 ct.
Burma, natural colour
 untreated
The Natural Gem Saphir Pink Sapphire Pink
Pink Sapphire, 6.51 ct.
Sri Lanka, natural colour
untreated
The Natural Gem Saphir Orange Sapphire Orange
"Padparadscha" Sapphire, 5.69 ct.
 Sri Lanka, natural colour
untreated
Yellow Sapphire, 8.11 ct.
Sri Lanka, natural colour
 untreated
EMERALD
Beryl, hardness 8, coloured green by trace elements chrome and/or vanadium; has been in great demand since ancient times and is therefore increasing in value.
The Natural Gem Smaragd Emerald
Emerald, 7,54 ct.
Columbia, natural colour
 untreated
COLOURED DIAMOND
(„FANCY DIAMOND“)
Carbon, hardness 10, coloured red by trace elements or natural radiation; from yellow through orange, pink, green and blue to red; very rare with strong increase in value.
Yellow Diamond
2.54 ct.
fancy intense yellow
VVS1
Pink Diamond
1.43 ct.
fancy vivid pink
SI1
Blue Diamond
0.97 ct.
fancy green blue
SI2
Blue Diamond
1.01 ct.
fancy dark blue
SI2
Brown Diamond
3.4 ct.
fancy brown
VS1
DIAMOND
Pure carbon, hardness 10, colourless; long-term increase in value; there is currently enough supply to satisfy demand.
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Diamond
10.12 ct.
D-IF
TOURMALINE
Hardness 7.5, occurring in all colours; becoming rare in blue, pink and green and therefore healthy increase in value; highly desirable: tourmalines with clearly zoned polychromatism
The Natural Gem Turmalin Grün Turmalin Green
Tourmaline
36.54 ct.
green
The Natural Gem Turmalin bicolor
Tourmaline
18.27 ct.
bi-color green-red
The Natural Gem Turmalin Rot Turmalin Red
Tourmaline
18.75 ct.
red
For a gemstone to increase in value it must be untreated (naturally coloured) and this must be certified by an international certificate.
 
THE NATURAL GEMoffers only stones with such internationally recognised certificates.