Journal

A place to learn about gemstones

The quality of a stone can only be determined by knowing it.
A workshop that has been dealing with rough stones for 30 years will tell you their perspective.

journal

スターサファイアの価値と価格

Star sapphire value and price

There are three categories of star sapphires.①Non-heating②Low temperature heating③SynthesisThese three differ greatly in value and price.① Unheated star sapphire is the most valuable.Those with high transparency and six stars that...

Star sapphire value and price

There are three categories of star sapphires.①Non-heating②Low temperature heating③SynthesisThese three differ greatly in value and price.① Unheated star sapphire is the most valuable.Those with high transparency and six stars that...

非加熱ルビー の価値と価格

Unheated ruby value and price

There are three categories of rubies: unheated, heated, and treated.The price and value of each product vary greatly, but please be aware that there are some vendors who will sell...

Unheated ruby value and price

There are three categories of rubies: unheated, heated, and treated.The price and value of each product vary greatly, but please be aware that there are some vendors who will sell...

不純物を含まない!  超純粋 天然ダイヤモンド type2A・type2B

Contains no impurities! Ultra pure natural diam...

Natural diamonds include ultra-pure type 2 diamonds, which contain no impurities and are extremely rare, clear, and beautiful.However, most diamonds belong to type 1 and are, of course, minerals, so...

Contains no impurities! Ultra pure natural diam...

Natural diamonds include ultra-pure type 2 diamonds, which contain no impurities and are extremely rare, clear, and beautiful.However, most diamonds belong to type 1 and are, of course, minerals, so...

まだまだ上がる価値あるエメラルドと、値上がりしないエメラルド

Emeralds whose value continues to rise and emer...

Natural emerald prices continue to rise.Among them, there are emeralds whose value is still rising and there are emeralds whose price will not rise.Emeralds are produced in many countries and...

Emeralds whose value continues to rise and emer...

Natural emerald prices continue to rise.Among them, there are emeralds whose value is still rising and there are emeralds whose price will not rise.Emeralds are produced in many countries and...

ダイヤモンドの蛍光性とは?知らないと損する?

What is diamond fluorescence? Is it a loss if I...

One frequently asked question that is often misunderstood is regarding the fluorescence of diamonds.The question is, ``Are fluorescent diamonds cloudy and worthless?''To be clear, things that have fluorescence do not...

What is diamond fluorescence? Is it a loss if I...

One frequently asked question that is often misunderstood is regarding the fluorescence of diamonds.The question is, ``Are fluorescent diamonds cloudy and worthless?''To be clear, things that have fluorescence do not...

価値があるパライバトルマリンや希少宝石、価値のないパライバトルマリンや希少宝石

worth itparaiba tourmalineor rare gemstones, wo...

Don't be fooled by rare gems! !(paraiba tourmaline, demantoid, alexandrite cat's eye, grandidierite, etc. )The most important point is① Being rare and rare②It is rare and valuable.These two are completely...

worth itparaiba tourmalineor rare gemstones, wo...

Don't be fooled by rare gems! !(paraiba tourmaline, demantoid, alexandrite cat's eye, grandidierite, etc. )The most important point is① Being rare and rare②It is rare and valuable.These two are completely...