Loose Marquise Mixed Cut Natural Brazilian Emerald, 13.70 ct
Jewelry (Loose Gemstone) · Natural Origin (Brazilian); Appraised by Sherwood (Graduate Gemologist, GIA)
Pattern: Unique Natural Specimen; Marquise Mixed Cut Pattern
Type
Jewelry (Loose Gemstone)
Maker
Natural Origin (Brazilian); Appraised by Sherwood (Graduate Gemologist, GIA)
Material
Natural Beryl (Emerald); 13.70 Carats; Mineral trace elements Chromium/Vanadium
Dimensions
Weight: 13.70 carats; Dimensions specific to 13ct marquise (approx. 22-25mm length)
Description
A substantial 13.70 carat natural Brazilian emerald featuring a marquise mixed cut. The stone exhibits a medium green hue characteristic of South American beryls, presenting significant presence for centerpiece jewelry design. It is documented by a professional gemological appraisal indicating its status as a loose natural specimen.
Key Features
Large carat weight (13.70 ct); Brazilian geographic origin; marquise silhouette; inclusive garden (jardin) typical of natural emeralds
Material & Composition
Natural Beryl (Emerald); 13.70 Carats; Mineral trace elements Chromium/Vanadium
Finish & Decoration
Marquise mixed cut; faceted crown and pavilion; polished surface finish
Hallmarks & Stamps
None on object; accompanied by signed Sherwood/GIA Graduate Gemologist appraisal certificate
Construction Details
Lapidary cut and polished; natural crystal growth formation
Functional Features
Loose stone intended for custom jewelry mounting (ring or pendant)
Handle & Grip Details
Not applicable (Loose gemstone)
Craftsmanship Details
Symmetrical marquise faceting; 'Good' cut rating suggests commercial quality proportions for a stone of this scale.
Authentication Indicators
GIA Graduate Gemologist signature; formal appraisal document provided by Sherwood; visual inclusion patterns consistent with Brazilian origin
Origin & Manufacturing
Country of Origin: Brazil; Lapidary work likely international
Era & Period
Contemporary Market (Natural origin date geological; appraisal date modern)
Age Estimate
Geologically ancient; modern cut and appraisal
Cultural Significance
Emeralds are the birthstone for May and traditionally symbolize rebirth, status, and luxury in Western and Eastern cultures.
Condition Notes
Grade: Good Cut. Visible internal inclusions (jardin) typical of natural beryl. Surface appears polished without major chips.
Value Estimate
$19,500 (Retail Appraisal Value as documented)
Care & Maintenance
Clean with mild soapy water and soft brush; avoid ultrasonic cleaners and steam cleaning due to natural fissures; avoid high heat.
Similar Pieces
Colombian Emeralds (typically more vivid/expensive), Zambian Emeralds (often more blue-toned), Synthetic Hydrothermal Emeralds (lacks natural inclusions)
Interesting Facts
Brazilian emeralds were first discovered in the 1910s but became commercially significant in the 1960s; 13+ carat stones are considered rare 'investment grade' sizes.