Larimar

Big Photo

Dominican Republic
19.66 carats
© gemselect.com

Larimar is named after its discovery locality in Filipinas Larimar Mine, Los Checheses, Sierra de Baoruco, Barahona Province, Dominican Republic.

Larimar is a trade name for massive light- to sky-blue variety of Pectolite from Dominican Republic. This compact material yields attractive cabochons.

Larimar may be used as a turquoise substitute.

Larimar Gemstones by Colour

This table shows the variety of hues this gemstone can be found in. Click on a photo for more information.
 
 

Larimar Gemstones by Size

This table shows distribution of Larimar gemstone sizes that are listed on this site. This can give a good indication as to the general availability of this gemstone in different sizes.
Contributed photos
Lightest:2.74 cts
Heaviest:54.0 cts
Average:14.55 cts
Total photos:21
Do you have a larger Larimar? Why not upload a photo?
2.74ct to 7.87ct7.87ct to 12.99ct12.99ct to 18.12ct18.12ct to 23.24ct23.24ct to 28.37ct28.37ct to 33.50ct33.50ct to 38.62ct38.62ct to 43.75ct43.75ct to 48.87ct48.87ct to 54.00ct
General Information
A variety or type of:Pectolite
Chemical Formula
Ca
 
2
NaHSi
 
3
O
 
9
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
Photos of natural/un-cut material from mindat.org
Physical Properties of Larimar
Mohs Hardness5
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
Specific Gravity2.74 to 2.90
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
Optical Properties of Larimar
Refractive Index1.595 to 1.645
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
More from other references
Optical CharacterBiaxial/+
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
Birefringence0.032 to 0.038
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
More from other references
Colour
Colour (General)Blue, bluish-white, white, gray
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
Causes of ColourColouring agent is copper
Lapidary Journal (1999)
TransparencyOpaque
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
Fluorescence & other light emissions
Fluorescence (Short Wave UV)Yellow or orange
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
Crystallography of Larimar
Crystal SystemTriclinic
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
Further Information
Mineral information:Larimar information at mindat.org
Significant Gem Localities
Dominican Republic
 
  • Barahona Province
    • Sierra de Baoruco
      • Los Checheses
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