Archive for the ‘Gemstone of the Month’ Category
Saturday, August 13th, 2011
Celebrity brides are becoming known by their engagement ring choices, and the colored gemstone ring is very much in the limelight. Princess Kate, in the wedding of the decade, wore “The Ring“, her famous heirloom sapphire and diamond ring, Penelope Cruz is setting style with her sapphire and diamond ring, and Jessica Simpson is stunning […]
Tags: emerald, natural alexandrite, Padparadscha, pink sapphire, Ruby, Sapphire, spessartite garnet, spinel, Sri Lanka, Tanzania, unheated ruby
Posted in Custom Jewelry, Featured Post, Gemstone of the Month, Gemstones, Mardon Exclusive Jewelry | Comments Off on Colorful Engagement Rings are Center Stage
Saturday, July 16th, 2011
Want to own a piece of historical art jewelry? We are pleased to showcase this wonderful handmade Modernist brooch/pendant of 18k yellow gold set with diamonds and a fabulous red fantasy cut tourmaline weighing 10.05 carats, created by the brilliant lapidary artist, Bernd Munsteiner.
Tags: American Gem Trade Association, Atelier Munsteiner, Bernd Munsteiner, Modernist, Patrick Irla
Posted in Estate Jewelry, Gem Industry News, Gemstone of the Month, Gemstones, Jewelry Facts, Jewelry Services | Comments Off on Vintage Modernist Munsteiner Jewel
Thursday, March 31st, 2011
We just appraised this beautiful bright yellow ~2 ct. round diamond for a client. She had inherited the stone, which was accompanied by an appraisal from a gemologist which described it as a “Canary Yellow” diamond, which implied but didn’t state specifically that the stone was natural-color. Our client said the diamond had originally been […]
Tags: Artificially Irradiated, Canary Yellow Diamond, Fancy Color Diamonds, Fancy Vivid Yellow, Gem Trade Laboratory, GIA, HPHT
Posted in Estate Jewelry, Gem Industry News, Gemstone of the Month, Gemstones, Jewelry Services, Mardon Happenings | Comments Off on Appraising Fancy Color Diamonds
Friday, March 18th, 2011
We’ve just completed this gorgeous sapphire and diamond ring, inspired by the engagement ring of Lady Diana and soon-to-be Lady Kate. This basic design, where a colored gemstone is surrounded by a circlet of diamonds, has been a favorite for centuries. Since everybody and their uncle has been doing versions of the ring, we might […]
Tags: Ceylon sapphire, Crown Jeweller, Engagement Ring, Garrard's of Mayfair, Kate Middleton, Lady Diana, Mardon, Prince William, provenance, Rapid Prototype, Rapid Protoype Machine, the royals
Posted in Estate Jewelry, Featured Post, Gemstone of the Month, Gemstones, Jewelry Facts, Jewelry Services, Mardon Exclusive Jewelry, Mardon Happenings | Comments Off on Our Lady Diana Ring
Thursday, October 29th, 2009
What makes opal such a fascinating gemstone? When asked what opal looks like, most people would probably first think of the typical white base opal with little sprinkles and twinkles of color. This unique display of color is a phenomenon correctly known as play of color, not fire as it is sometimes referred to. Any […]
Tags: Australian opal, black opal, boulder opal, Brazilian opal, harlequin opal, Lightning Ridge opal, opal fossils, white opal
Posted in Custom Jewelry, Gemstone of the Month, Gemstones, Jewelry Facts, Jewelry Services | 1 Comment »
Wednesday, September 16th, 2009
We published this article February 2009 with good response. Since Sapphire is the stone for September, we thought it appropriate to republish, with minor additions, editing, new pricing information and larger pictures. Early in my career as a gemologist, while working the gem identification counter at the GIA Gem Trade Laboratory in Santa Monica, I […]
Tags: beryllium diffusion, Ceylon, Chatham, GRS, Madagascar, Padparadscha, Robert Crowningshield, Sri Lanka, Tunduru
Posted in Custom Jewelry, Gemstone of the Month, Gemstones | Comments Off on What is the True Padparadscha? Again!
Thursday, September 10th, 2009
Blue sapphires are found in many countries worldwide. The geological conditions in which they form determine the quality of the sapphire crystals. Some locales are known to produce exceptionally fine crystals, yielding extra fine gems. Each locale produces a range of gem material that shares common characteristics that are directly related to its unique geology. […]
Tags: alluvial mining, Burma, Ceylon, county of origin, gem gravel, GIA, GRS, heat treatment, Kashmir, Madagascar, Mogok, Sri Lanka
Posted in Gemstone of the Month, Gemstones | 1 Comment »
Saturday, September 5th, 2009
The characteristics of any gemstone are directly related to the crystal from which it is cut, so it’s important to understand how the physical nature of the crystal influences the color of the gem. In the case of blue sapphire, one of the more common crystal forms is an elongated six sided dipyramidal form, as […]
Tags: color zoning, heat treatment, hexagonal crystal system, pleochroism, silk
Posted in Gemstone of the Month, Gemstones, Jewelry Facts | Comments Off on What is the Best Color for Blue Sapphire? Part 2
Thursday, September 3rd, 2009
Our clients often ask “What is the best color blue sapphire?” There are two answers– the obvious is that personal preference should dictate your color choice. Every person has unique abilities to perceive color, based on such things as age, health, culture and genetic gifts. Some people prefer light pastel colors, others prefer rich intense […]
Tags: Australia, blue sapphire, Burma, Ceylon, heat treatment, hue, Kashmir, Madagascar, Montana, saturation, Thailand, tone
Posted in Gemstone of the Month, Gemstones | 3 Comments »
Saturday, August 29th, 2009
A couple of years ago, a local attorney’s wife was in our store, browsing some colored stone jewelry in the estate case. I asked if she had any favorite gemstones– “none in particular”– so I asked about her birthstone. She replied “Oh, I don’t like my birthstone, it’s peridot.”
Posted in Custom Jewelry, Gemstone of the Month, Gemstones, Jewelry Facts | Comments Off on Peridot- the “I don’t like my birthstone” Birthstone, Part 3