Diamonds | Gemstones | Competitive Prices |deSignet International

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Gemstone Inventory
deSignet International
Ready for Immediate Delivery
Please click on the gemstone you are looking for and scroll to bottom of page

Alexandrite
Birthstone: June
Mineral: Color Changing Chrysoberyl
Chemistry: BeAl2O4
Color: Bluish green in daylight,
Purplish red in incandescent light
Mohs Hardness: 8.5

Amethyst
Birthstone: February
Mineral: Quartz
Chemistry: SiO2
Color: Purple, green
Mohs Hardness: 7.0

Andelucite
Birthstone: N/A
Mineral: Aluminium Nesosilicate
Chemistry: Al2SiO5
Color: Golden, yellow/brown
Mohs Hardness: 6.5 to 7.5

Apatite
Birthstone: N/A
Mineral: Calcium Phosphate
Chemistry: Ca5(PO4)3(F,Cl,OH)
Color: Aqua-blue
Mohs Hardness: 5.0

Aquamarine
Birthstone: March
Mineral: Beryl
Chemistry: Be3Al2Si6O18
Color: Light Blue
Mohs Hardness: 7.5 to 8.0

Beryl
Birthstone: N/A
Mineral: Beryl
Chemistry: Be3Al2Si6O18
Color: Yellow
Mohs Hardness: 7.5 to 8.0

Chrysoberyl (Cats Eye)
Birthstone: N/A
Mineral: Spinel
Chemistry: BeAl2O4
Color: Green, yellow, brown
Mohs Hardness: 8.5

Cultured Pearl
Birthstone: June
Mineral: Calcium Carbonate
Chemistry: CaCO3
Color: White, brown, grey, pink, golden
Mohs Hardness: 2.5-3.0

Diamonds
Birthstone: April
Mineral: Diamond
Chemistry: Carbon
Color: Clear
Mohs Hardness: 10
(Hardest mineral on earth)

Emerald
Birthstone: May
Mineral: Beryl
Chemistry: Be3Al2Si6O18
Color: Vibrant Green
Mohs Hardness: 7.5 to 8

Garnet
Birthstone: January
Mineral: Aluminum silicate
Chemistry: (Mg, Fe)3Al2(SiO4)3
Color: Maroon (mozambique), deep pink (rhodolite), green (tsavorite & demantoid), orange (spessartite & pyrope)
Mohs Hardness: 6.5 to 7.5

Kunzite (Spodumene)

Birthstone: N/A
Mineral: Pyroxene
Chemistry: LiAl(SiO3)2
Color: Pink, grey, lilac, bi-color
Mohs Hardness: 6.5 to 7.0

Moissanite
Birthstone: April (diamond-like)
Mineral: Silicon Carbide
Chemistry: SiC
Color: Transparent greenish grey
Mohs Hardness: 9.5

Opal
Birthstone: October
Mineral: Hydrated Silica
Chemistry: SiO2.nH2O
Color: White with color flashes
Mohs Hardness: 5.0 to 6.5

Peridot
Birthstone: August
Mineral: Olivine
Chemistry: (MgFe)2SiO4
Color: Yellowish Green
Mohs Hardness: 6.5 to 7

Ruby
Birthstone: July
Mineral: Corundum
Chemistry: Al2O3
Color: Red
Mohs Hardness: 9.0

Sapphire

Birthstone: September
Mineral: Corundum
Chemistry: Al2O3
Color: Blue, pink, green, yellow, purple, orange, white
Mohs Hardness: 9.0

Spinel
Birthstone: N/A
Mineral: Spinel
Chemistry: MgAl2O4
Color: Red, orange, pink, purple, blue
Mohs Hardness: 8.0

Tanzanite
Birthstone: N/A
Mineral: Zoisite
Chemistry: Ca2Al3(SiO4)3(OH)
Color: Bluish Purple to Violet
Mohs Hardness: 6.0 to 7.0

Topaz
Birthstone: November
Mineral: Topaz
Chemistry: Al2(F,OH)2SiO4
Color: Yellow, orange, brown, pink, blue
Mohs Hardness: 8.0

Tourmaline

Birthstone: October
Mineral: Tourmaline
Chemistry: Boron aluminium silicate
Color: Green, blue-green, pink, yellow, red, bi-color
Mohs Hardness: 7.0 to 7.5

Zircon
Birthstone: December
Mineral: Zircon
Chemistry: ZrSiO4
Color: Blue, yellow, orange, brown
Mohs Hardness: 6.0 to 7.5

 For more information on gemstones visit
GIA - the Gemological Institute of America Inc.


You may also qualify for our " $150 Mounting Incentive". That is $150 that you can apply to the cost of the mounting. If you deduct the $150.00 savings from the setting cost, it will increase the amount you have for the diamond or gemstone. The savings may also be applied to the purchase of your wedding bands or shipping.

If you do not see what you want, we will gladly source a stone for you.   Please call 1-888-727-8266 or email our Diamond and Gemstone Department with your specifications (stone type, shape, carat weight or dimensions, and desired quality or grade).  We will do our best to find that special stone just for you.