From San Eugenio, Artigas Dept., Uruguay   Heres a large museum quality cluster of several stalactitic formations of scintillating gem amethyst crystals with 2 isolated golden calcite crystals in sharp scalenohedral from with gem translucent core. The stalactites are completely intact with glassy luster crystal.    25 lbs, 17 x 17...

Elks Creek, Meade County, South Dakota   Several rich golden brown transparent crystals of Barite 2 inches in length on matrix lined with yellow calcite micro crystals. The barite crystals are well define with scalenohedral terminations and glassy luster faces.   2 lbs, 7 x 3 x 3.5 inches  ...

Lustrous transparent powder blue thin pyramidal crystals in parallel formations on matrix inter grown with several isolated crystals of calcite in fully terminated scalenohedral formation.   9.8 lbs, 10.5 x 8.5 x 4 inches

From Elmwood Mine, Carthage, Smith County, TennesseeTwinned doubly terminated scalenohedral golden calcite. The calcite crystals are gem transparent twinned on the c-axis. Embedded with sphalerite on the back of the crystals.491.5 g, 4.75'' x 3.75'' x 1.75''

From Elmwood Mine, Carthage, Smith County, TennesseeLustrous transparent light golden calcite crystal on matrix. Large double terminated scalenohedral twinned on the C-axis with well defined complex re-entrant faces.634.6 g, 6'' x 2.75'' x 2''

from Jalgaon,  Maharashtra, India Large vug lined with transparent to translucent lustrous apophyllite crystals intergrown with pink stilbite accented by an isolated twinned golden calcite. The calcite show sharp rhombic form with a penetrating twin, several faces are coated with a sparkling coating of druzy quartz.   13 lbs, 11...

From Artigas, Uruguay   Large golden yellow scalenohedral crystal of Calcite centered on matrix lined with grape purple translucent to transparent amethyst crystals. The calcite is fully terminated with several parallel crystal growth on front crystal faces with a second generation growth of amethyst cascading down from the tip of...

Elongated intergrown 5'' transparent calcite crystals with scintillating drusy quartz coating over the crystal faces all on large plate lustrous amethyst. There are several isolated scalenohedral crystals are quartz crystal cast.   15.5 lbs, 9 x 11.5 x 5 inches

from Elmwood Mine, Carthage, Smith County, Tennessee   A superb little specimen of golden transparent twinned doubly-terminated calcites on matrix. The calcites are perfectly terminated and damage free.   20.4 grams, 1 x 1 x 1.25 inches

From San Eugenio, Artigas Dept., Uruguay   Large 6'' scalenohedral transparent calcite sceptor crystal on matrix  with lustrous translucent grape purple amethyst crystals.   5 lbs, 9'' x 7'' x 7''

From San Eugenio, Artigas Dept., Uruguay Large 6'' sharp scalenohedral crystal of Calcite centered on matrix of grape purple translucent to transparent top-quality Uruguayan Amethyst. This piece is in supreme condition and is a top collectable specimen.   8 lbs, 8 x 3 x 8 inches

From San Eugenio, Artigas Dept., Uruguay   Large 7'' x 3.5" scalenohedral crystal of calcite on amethyst matrix accented by isolated cluster of colorless quartz. The calcite crystal shows fully terminated faces composed of small micro etched faces, with a rich transparent golden yellow core. There an very light micro...

From San Eugenio, Artigas Dept., Uruguay   Large 7'' x 3" scalenohedral crystal of calcite on amethyst matrix accented by isolated cluster of colorless quartz. The calcite crystal shows fully terminated faces composed of small micro etched faces, with a rich transparent golden yellow core. There an very light micro...

From San Eugenio, Artigas Dept., Uruguay   2 Large double terminated scalenohedral calcite crystals twinned on the C-axis with well defined re-entrant faces, and crystal faces exhibiting subparallel growth in a shallow vug of lustrous amethyst crystals. Fully terminated with gem transparent core.   8 lbs, 6 x 5 x...

From San Eugenio, Artigas Dept., Uruguay Large 6'' sharp scalenohedral crystal of Calcite centered on matrix of  purple translucent to transparent top-quality Uruguayan Amethyst.   7.5 lbs, 9 x 7 x 7 inches

From San Eugenio, Artigas Dept., Uruguay Unusual 7'' elongated rhombic calcite crystal with modified terminations on gem amethyst crystal matrix. The calcite is perfectly terminated with an unusual tapering at the terminations into a secondary growth, coated with a micro crystal giving it the sparkle affect.   4 lbs, 8...

From Artigas, Uruguay   Heres a rare museum quality of an unusual 4.5 inch crystal of calcite with a parallel growth on amethyst matrix. Sharp scalenohedral form  with sharp terminations. Has 2 repairs to the calcite.   2 lbs, 7.5 x 4 x 5.5 inches

From San Eugenio, Artigas Dept., Uruguay   Museum quality specimen gem-quality 10" scalenohedral crystal of golden Calcite centered on matrix lined with grape purple translucent to transparent top-quality Uruguayan Amethyst. The calcite has sharp scalenohedral with small isolated amethyst cluster drapped along the calcite crystal faces.  This piece is in pristine condition and is...

from Mina Ojuela, Mapimi, Durango, Mexico   Excellent specimen of a transparent calcite overgrowth on electric green conichalcite variety barthite crystals in spherical botryoidal aggregates on gossan matrix. There are 2 isolated clusters of tabular calcite crystals. The calcite overgrown shows well defined scalenohedral faces.   417 grams, 3.75 x 2...

From Edong Mining District, Daye, Hubei, China   Large cluster of scalenohedral calcite with a secondary coating of lustrous iridescent metallic chalcopyrite crystals on the surfaces. Bright and lively specimen with a scintillating surface.   3.20 lbs, 6.5'' x 4'' x 4.75''

From Yaogangxian Mine, Nanling Mountains, Hunan Province, China   Large specimen of pale-yellow scalenohedral calcite on a bed of micro calcite crystals with transparent mint green fluorite with purple phantoms. The fluorites are cubic with modified terminations. Minor contact along the bottom of the specimen.   2.70 lbs, 7'' x...

A massive, 52 lb geode with large rhombic Calcite crystals beside a pseudomorphic quartz after Calcite crystals with pink Heulandite crystals in a wheat sheave aggregate.  Additionally, there are lustrous pink Stilbite crystals on gradient powder-blue to white-druzy Chalcedony matrix.   52 lbs, 10.5 x 14 x 10 inches

Large aesthetic formation of sharp, lustrous, translucent, white/colorless highly compressed rhombohedral calcite crystals in a stacking formation on calcite matrix with marcasite inclusions outlining the termination of the crystal.   3.4 lbs, 8 x 8 x 8 inches

From Aurangabad, Maharashtra, India   Massive complex cluster of fully crystallized green heulandite in rosette-shaped rounded aggregates. The green coloration is due to microscopic celadonite inclusions.   2.5 lbs, 8 x 4 x 6 inches

From Alimon Mine, Huaron, Cerro de Pasco, Peru   Large formation of metallic chalcopyrite crystals overgrown on lustrous jet black sphalerite accented by small flat rhombic calcite crystals and yellow metallic pyrite crystals.   4 lbs, 5.5 x 2 x 5 inches

Lustrous rounded cluster of vibrant pink rhombohedral Cobaltoan Calcite crystals. The calcite is translucent to transparent along the edge.  The pink color is due to cobalt impurities.   217.6 grams, 2.75 x 2.5 x 1.25 inches

Lustrous rounded cluster of vibrant pink rhombohedral Cobaltoan Calcite crystals. The calcite is translucent to transparent along the edge.  The pink color is due to cobalt impurities.   421.7 grams, 4.25 x 2 x 2 inches

Lustrous rounded cluster of vibrant pink rhombohedral Cobaltoan Calcite crystals. The calcite is translucent to transparent along the edge.  The pink color is due to cobalt impurities.   384 grams, 4.15 x 2.75 x 1.75 inches

Lustrous rounded cluster of vibrant pink rhombohedral Cobaltoan Calcite crystals. The calcite is translucent to transparent along the edge.  The pink color is due to cobalt impurities.   239 grams, 3.25 x 2.25 x 1.5 inches

Lustrous rounded cluster of vibrant pink rhombohedral Cobaltoan Calcite crystals. The calcite is translucent to transparent along the edge.  The pink color is due to cobalt impurities.   220 grams, 2.25 x 2 x 2.25 inches

From Mashamba West , Kolwezi, Western area, Shaba Cu belt, Shaba (Katanga), Congo (Zaire)Complex cluster of lustrous pink translucent flattened rhombohedral cobalt-rich Calcite crystals on matrix. Has bright intense color with scintillating luster. These are from an old stock mined from the 1970s or 1980s and very rarely available with this...

From Mashamba West , Kolwezi, Western area, Shaba Cu belt, Shaba (Katanga), Congo (Zaire) It is no surprise that minerals predominantely display colors involving one of the "earth tones" - orange, brown, black, tan, etc. Here a fairly normal, golden hued Calcite matrix is thinly over-coated by a second generation...

From Mashamba West , Kolwezi, Western area, Shaba Cu belt, Shaba (Katanga), Congo (Zaire) It is no surprise that minerals predominantely display colors involving one of the "earth tones" - orange, brown, black, tan, etc. Here a fairly normal, golden hued Calcite matrix is thinly over-coated by a second generation...

From Mashamba West , Kolwezi, Western area, Shaba Cu belt, Shaba (Katanga), Congo (Zaire) It is no surprise that minerals predominantely display colors involving one of the "earth tones" - orange, brown, black, tan, etc. Here a fairly normal, golden hued Calcite matrix is thinly over-coated by a second generation...

From Mashamba West , Kolwezi, Western area, Shaba Cu belt, Shaba (Katanga), Congo (Zaire) It is no surprise that minerals predominantely display colors involving one of the "earth tones" - orange, brown, black, tan, etc. Here a fairly normal, golden hued Calcite matrix is thinly over-coated by a second generation...

From Mashamba West , Kolwezi, Western area, Shaba Cu belt, Shaba (Katanga), Congo (Zaire) It is no surprise that minerals predominantely display colors involving one of the "earth tones" - orange, brown, black, tan, etc. Here a fairly normal, golden hued Calcite matrix is thinly over-coated by a second generation...

From Mashamba West , Kolwezi, Western area, Shaba Cu belt, Shaba (Katanga), Congo (Zaire) It is no surprise that minerals predominantely display colors involving one of the "earth tones" - orange, brown, black, tan, etc. Here a fairly normal, golden hued Calcite matrix is thinly over-coated by a second generation...

From Mashamba West , Kolwezi, Western area, Shaba Cu belt, Shaba (Katanga), Congo (Zaire) It is no surprise that minerals predominantely display colors involving one of the "earth tones" - orange, brown, black, tan, etc. Here a fairly normal, golden hued Calcite matrix is thinly over-coated by a second generation...