In the past, we have emphasized the importance of gem labs when it comes to buying gemstones. Most recently, we discussed how certain sapphires that appear to look like “Padparadscha” need to go through color stability testing in order to make sure they do not lose their color. That is, losing their color so they … Read moreFrom Padparadscha to Pink Sapphire | GIA’s Color Stability Test
A common issue customers and gem dealers face is when two labs disagree on a gemstone. A lot of times these disagreements are about heat treatment v. non-heat treatment, and correct origin (Ceylon v. Burma etc..). The same issue arises when one lab calls a certain variety of sapphire as “Padparadscha,” and another classifies it … Read moreGRS Type Sunrise and Sunset Padparadscha v. GIA Padparadscha
What is Sapphirine? The scintillating blue stone was given the name of “Sapphirine” due to its striking resemblance to sapphire. However, both minerals have completely different chemical make-ups and properties. The stone owes its namesake to its striking blue color, but in some instances it forms in a reddish-orange color. The stone is very rare … Read moreWhat is Sapphirine?
What are Birthstones? Birthstones are stones that are associated with certain months of the year. January Birthstone Garnet Garnet refers to a variety of minerals that typically shine with a rich red color, yet they could potentially be different colors: greens, oranges, pinks, red and even some blues. Historically, the gem traces its roots back … Read moreWhat are Birthstones?
Taaffeite Taaffeite’s History Originally thought to be spinel, Taaffeite was unknown to the world of gemology until a relatively recent discovery. The first sample was located accidentally in a small jewel’s shop in Dublin, Ireland. In 1946, Count Richard Taaffe, the man to which the gem owes its namesake, found the stone already cut and … Read moreWhat is Taaffeite?
Russian Alexandrite’s History The origins of the first Russian Alexandrite (Chrysoberyl with strong change) require official credit to a person named Yakov Vasilevich Kokovin, or Y.A. Kokovin. According to gem historian Richard A. Wise, Kokovin was the Russian Ural Mountain Mine Manager around the 1800s. (Wise, 2016). Wise’s reference to Kokovin, albeit brief, is to … Read moreRussian Alexandrite’s History
Introduction To Padparadscha A Padparadscha Sapphire is a fancy colored sapphire that is a mix of orange and pink color. Gem Labs Definition According to many gem labs, the precise definition “is a variety of corundum from any geographical origin whose colour is a subtle mixture of pinkish orange to orangey pink with pastel tones … Read moreWhat is a Padparadscha Sapphire? (UPDATED 2019 Definition)
Other Gemstones Some of the other commonly known gemstones are not listed. These may include: Peridot, Amethyst, Topaz, Citrine, Opal, , Amber, Andalusite, Beryl, Chrysoberyl, Coral, Fluorite, Iolite, Lapis, Malachite, Pyrite, Quartz, Sphene, Spodumene, Zoisite, Serpentine. This list is updated on a yearly basis. If you strongly feel that we left out a known rare … Read moreOther Gemstones
We believe that every gemstone’s degree of rarity depends on two critically connected elements: Availability & Market Desirability. At all times, this concept of market desirability must be considered through a lens of an informed collector. For example, an informed collector knows: -Marketing can influence a person to want anything. -Jewelry that is beautiful and fashionable does … Read moreWhat Makes a Stone Rare?
In 2014, Christie’s auctioned off a 21 carat Russian Alexandrite in Geneva Magnificent Jewels, Switzerland. The pre-auction valuation of $450,000-$650,000 Swiss Francs (USD Equivalent about the same) was grossly underestimated. The final price: $1,325,000 CHF! This amounts to a whopping $60,000 USD per carat! In 2015, Sotheby’s auctioned off a 26 carat Ceylon Alexandrite in … Read moreChristie’s & Sotheby’s Most Rare Alexandrites