UK. Used in assaying (testing) ores for the presence of gold, silver, and or other valuable metals.
convert assay tons (AT UK)
one gram (g) = 0.030612241774261 assay tons (AT UK)

US. Used in assaying (testing) ores for the presence of gold, silver, and or other valuable metals.
convert assay tons (AT US)
one gram (g) = 0.034285710367347 assay tons (AT US)

Metric system. Used for precious stones such as diamonds 
convert carats (ct)
one gram (g) = 5 carats (ct)

Metric unit
convert centigrams (cg)
one gram (g) = 100 centigrams (cg)

Metric unit
convert decagrams (dag)
one gram (g) = 0.1 decagrams (dag)

Metric unit
convert decigrams (dg)
one gram (g) = 10 decigrams (dg)

Avoirdupois unit 
convert drams (dr advp)
one gram (g) = 0.564383391193287 drams (dr advp)

Metric unit 
convert gammas (ɣ)
one gram (g) = 1000000 gammas (ɣ)

Avoirdupois, Troy, Apothecary  unit
convert grains (gr)
one gram (g) = 15.4323583529414 grains (gr)

Metric unit
convert hectograms (hg)
one gram (g) = 0.01 hectograms (hg)

British/Imperial unit of mass.
convert hundredweights (cwt long)
one gram (g) = 0.0000196841305522212 hundredweights (cwt long)

US Customary unit of mass.
convert hundredweights (cwt short)
one gram (g) = 0.0000220462262184878 hundredweights (cwt short)

Metric unit
convert kilograms (kg)
one gram (g) = 0.001 kilograms (kg)

Metric unit
convert micrograms (㎍)
one gram (g) = 1000000 micrograms (㎍)

Avoirdupois unit 
convert micropounds (μlb)
one gram (g) = 2204.62262184878 micropounds (μlb)

Metric unit
convert milligrams (mg)
one gram (g) = 1000 milligrams (mg)

Metric unit
convert nanograms (ng) 
one gram (g) = 1000000000 nanograms (ng)

Avoirdupois unit 
convert ounces (oz advp)
one gram (g) = 0.03527396194958 ounces (oz advp)

Troy system.
convert pennyweights (dwt)
one gram (g) = 0.64301493137256 pennyweights (dwt)

Metric system. Used for precious stones such as diamonds 
convert points (pt)
one gram (g) = 500 points (pt)

Avoirdupois unit 
convert pounds (lb advp)
one gram (g) = 0.00220462262184878 pounds (lb advp)

British/Imperial unit of mass.
convert quarters (qt long)
one gram (g) = 0.0000787365222088848 quarters (qt long)

US Customary unit of mass.
convert quarters (qt short)
one gram (g) = 0.000088184904873951 quarters (qt short)

Apothecary system.
convert scruples (s ap)
one gram (g) = 0.771617917647072 scruples (s ap)

British/Imperial unit of mass, used for body weight.
convert stones (st)
one gram (g) = 0.00015747304441777 stones (st)

Metric unit
convert tonnes (t)
one gram (g) = 0.000001 tonnes (t)

British/Imperial unit of mass.
convert tons (long t)
one gram (g) = 0.00000098420652761106 tons (long t)

US Customary unit of mass.
convert tons (tn short)
one gram (g) = 0.00000110231131092439 tons (tn short)