Skip to product information
1 of 22

Global Gemology

GIA 17.71 ct. Natural Tridacna Pearl, Precious Coral & 3.00 ctw. Diamond Starfish Necklace

GIA 17.71 ct. Natural Tridacna Pearl, Precious Coral & 3.00 ctw. Diamond Starfish Necklace

Regular price $18,000.00 USD
Regular price Sale price $18,000.00 USD
Sale Sold out
Shipping calculated at checkout.
Global Gemology is an NAJA Accredited Gemological Laboratory.  All gem and jewelry items have been examined by Scott Papper, who has earned the following credentials:
  * Graduate Gemologist (GIA)
  * Certified Master Appraiser (NAJA)
  * Registered Gemologist Appraiser (ISG)
  * Accredited Senior Gemologist (AGA)
  * Applied Jewelry Professional (GIA)
  * Graduate Diamonds (GIA)
  * Graduate Colored Stones (GIA)
  * Graduate Pearls (GIA)
  * Certified Senior Management Professional (JA)
  * Certified Senior Sales Professional (JA)
  * Certified Cultured Pearl Specialist (CPAA)


Tridacna pearls are very rare, organic gems produced by the largest living bivalve mollusk from the Cardiidae family, known as the Tridacna gigas or Giant Clam.  Tridacna clams can be found in the shallow waters of the Indo-Pacific, inhabiting coral reefs.  They can live for up to 100 years, can grow as large as 4 feet across, and weigh up to 440 pounds!  Natural Tridacna pearls are known for their porcelaneous appearance, sometimes displaying beautiful flame patterning.

Coral is a living marine organism that forms in branch-like structures in tropical and sub-tropical ocean waters.  When coral polyps die, a dull, hardened skeleton remains that can be polished to a beautiful waxy luster.  Most coral is white to cream in color but coral does occur naturally in several other colors such as red, pink, peach, black, orange, golden, blue, lavender, and angelskin.  The most valuable coral, known as precious coral, falls within the red to pink color range.

This magnificent, 1-of-a-kind, multi-strand opera length necklace features 293 graduated precious coral beads (taken from a 1940s vintage necklace) fastened by a custom 18K white gold starfish clasp set with 3 carats of extremely fine quality pavé set round brilliant cut diamonds.  At the center of the starfish is an extremely rare natural tridacna pearl.  The pearl weighs 17.71 carats and displays eye-visible flame patterning!

Accompanied by GIA Pearl Identification Report #2203324714.

Metal: 18K White Gold
Gender: Lady's
Length: 29" (Opera Length)
Hallmarks: None (Tests 18 Karat)
Gross Weight: 225.4 grams (144.9 dwts)
Age: Contemporary (21st Century)
Condition: Brand New

Quantity: 1
Type: Tridacna
Mollusk: Tridacninae Subfamily (Clam)
Nature: Natural Pearl
Environment: Saltwater
Measurements: 15.16 x 9.92mm
Shape: Button
Color: White
Luster: Porcelaneous
Phenomenon: Chatoyancy ("Stormy" Flame Patterning)
Treatments: No Indications of Treatment
Carat Weight: 17.71 ct.
GIA Report Number: 2203324714

Quantity: 293
Type: Precious Coral
Color: Salmon
Nature: Natural
Environment: Saltwater
Size: 5mm - 12mm, Graduated
Shape: Bead
Texture: Fine to Medium
Polish: Excellent
Treatments: No Indication of Dye

Quantity: 175
Shape/Cutting Style: Round Brilliant Cut
Color: D - F
Clarity: VVS1 - VS1
Measurements: 1.50 - 1.60mm Diameter
Total Carat Weight: 3.00 ct.
View full details