This cooper and manganese tourmaline is called «Paraiba   tourmaline» in the trade. This gemstone is very rare and valuable. Blue Paraibas with a strong neon glow are especially valuable.

Tsavorite is a rare green garnet that has only been found in Tanzania in its jewelry-quality form. The most valuable tsavorites have a bright green color and medium saturation, with aloe clean and eye clean clarity.

In the south of Madagascar, near the city of Tranomaro, rare polychrome sapphires are found. There are usually yellow-green colors. If the stone contains three colors, it is rarer and more valuable.

For further confirmation of the mining region, the gem report should be supplemented with Raman microscope study, obtaining the spectrum of this rubellite, and comparing it with the base spectrum of tourmaline rubellite from Malkhan mine. The cutting was developed and carried out by the master of the Russian
Guild of Cutters, D.V. Samorukov /

To accurately determine the mining region, the gem report should be supplemented with  Raman microscope study, obtaining the spectrum of this tourmaline Paraiba, and comparing it with the base spectrum of tourmaline Paraiba from Mozambique.

GEMOLOGICAL REPORT                                                        № 123
  Gemologist Olga Melikian | WA: https://wa.me/79990437349                            05/04/2025
  Telegram: @olgamelikianoffician | https://melikianjewelry.com                     


  Weight: ……………………………..…………………………..  1.14 ct
  Measurements: ……………….……………….   7.51x6.02x3.23 mm
  Сut: ……………………………………………..…………….   cushion
  Color / Color saturation: …  greenish blue | strong color saturation 
  Clarity: …………………….……………………..…   loop clean | VVS


  IDENTIFICATION: ………………………..  Natural GRANDIDIERITE
  
  TRADE NAME: …………………………………….  GRANDIDIERITE

  
  Geographic Origin: …………………………….………  Madagascar

  Treatment: …………………….……….   No indication of treatment

   

Information about GRANDIDIERITE: 

Grandidierite is a rare mineral and gemstone found in jewelry quality in Madagascar. The high cost and value are due to the rarity and excellent jewelry properties: beautiful color, 7.5 Moos hardness, clarity and transparency.

RESULTS OF DIAGNOSTIC METHODS
 GEMOLOGICAL REPORT                                                        № 123
  Gemologist Olga Melikian | WA: https://wa.me/79990437349                            05/04/2025
  Telegram: @olgamelikianoffician | https://melikianjewelry.com                     

  10x Magnifying glass: …………clarity loop clean, pavilion is small
  Refractive Index: …………………………………….… 1.575 - 1.615
  Polariscope: ………………………………………..…….. anisotropic
  Dichroscope: ………..…trichroism | light sandy, greenish blue, blue  
  UV fluorescence: …………………………………… no fluorescence
  Chelsea Filter: …………………………….…………………………….
  Color change | Alexandrite effect (daylight | artificial light): intense greenish blue - greenish blue

  Microscope: No indication of treatment (fillers, heating). There are gas-liquid inclusions, no mineral inclusions were found.

  Special properties:
  Opalescence | adularescence | iridescence ………………………No
  Cats eye effect…………………………………………….……….…No
  Asterism……………………………………….………………………No
  
  To accurately determine the mining region, the gem report should be supplemented with  Raman microscope study, obtaining the spectrum of this grandidierite, and comparing it with the base spectrum of grandidierite from Madagascar.

GEMOLOGICAL REPORT                                                        № 124
  Gemologist Olga Melikian | WA: https://wa.me/79990437349                            17/05/2025
  Telegram: @olgamelikianofficial | https://melikianjewelry.com                     

  Considering the characteristics of this garnet Malaya:

  Weight: ……………………………..…………………………..  5.53 ct
  Сut: ………………………………………………….…………….   oval
  Color / Color saturation: …  orange pink | medium color saturation 
  Clarity: …………………….………………………… eye clean | VVS2
  Geographic Origin: …………………………….……………  Tanzania
  Treatment: …………………….….…….   No indication of treatment

Recommended market value corridor (retail price) of Malaya Garnet from Tanzania weighing from 5 carat, eye clean clarity, and orange-pink color, as of 17.05.2025:

600-720 $ per 1 ct

Note: the recommended market value corridor in indicated on this date. The price may change over time. The value corridor is an opportunity for the buyer/ seller to get an objective assessment of the value of this stone. With the receipt of new gemological research  data, the cost corridor may be revised.


IWeight: ……………………………..…………………………..  5.53 ct
  Measurements: ……………….………..…….   11.39x9.18x6.19 mm
  Сut: ……………………………………………..…………….   cushion
  Color / Color saturation: …  orange pink | medium color saturation 
  Clarity: …………………….………….………….…   eye clean | VVS2


  IDENTIFICATION: …………………………………  Natural GARNET
  
  TRADE NAME: ……………………….………….  MALAYA GARNET

  
  Geographic Origin: …………………………………………  Tanzania

  Treatment: ……………………..……….   No indication of treatment

  
 
Information about MALAYA GARNET: 

The Malaya Garnet is a rare garnet of complex composition, first found on the Umba River in Tanzania. The composition is a mix of spessartite, pyrope, almandine and grossular. The best garnet Malaya have a red and orange-pink color, without a brown tint.

RESULTS OF DIAGNOSTIC METHODS
 GEMOLOGICAL REPORT                                                        № 124
  Gemologist Olga Melikian | WA: https://wa.me/79990437349                            17/05/2025
  Telegram: @olgamelikianofficial | https://melikianjewelry.com                     

  10x glass: ………..…. clarity eye clean, quality of the cut very good
  Refractive Index: ……………………………………………….… 1.750
  Polariscope: ………………………………..…………..…….. isotropic
  Dichroscope: ………………………………….……… no pleochroism  
  UV fluorescence: ………….………………………… no fluorescence
  Chelsea Filter: …………………………….…………………………….
  Color change | Alexandrite effect (daylight | artificial light): intense orange pink - pink orange

  Microscope: No indication of treatment (fillers, heating). There are gas-liquid inclusions, no mineral inclusions were found.

  Special properties:
  Opalescence | adularescence | iridescence ………………………No
  Cats eye effect…………………………………………….……….…No
  Asterism……………………………………….………………………No
DETAILED GEMOLOGICAL COMMENT
To accurately determine the mining region, the gem report should be supplemented with  Raman microscope study, obtaining the spectrum of this garnet Malaya, and comparing it with the base spectrum of garnet Malaya from Tanzania.

COST ESTIMATION
 GEMOLOGICAL REPORT                                                        № 125
  Gemologist Olga Melikian | WA: https://wa.me/79990437349                            28/05/2025
  Telegram: @olgamelikianofficial | https://melikianjewelry.com                     

  Considering the characteristics of this Black Star Sapphire:

  Weight: ……………………………..…………………………..  5.93 ct
  Сut: ……………………………………………………   oval cabochon
  Color / Color saturation: ………….. dark brown with golden sheen   
  Clarity: …………………….……………………………………………..
  Geographic Origin: ……………………….…… Chantaburi, Thailand
  Treatment: …………………….…..… No indication of any treatment

Recommended market value corridor (retail price) of Black Star Sapphire with 12-ray star from Chantaburi, Thailand weighing from 5 carat, no treatment as of 28.05.2025:

450-600 $ per 1 ct

Note: the recommended market value corridor in indicated on this date. The price may change over time. The value corridor is an opportunity for the buyer/ seller to get an objective assessment of the value of this stone. With the receipt of new gemological research  data, the cost corridor may be revised.
Weight: ……………………………..…………………………..  5.93 ct
  Measurements: …………….………..…..…   12.74x10.28x3.98 mm
  Сut: ……………………………………..…………….   oval cabochon
  Color / Color saturation: ………….. dark brown with golden sheen 
  Clarity: …………………….………….………….………………………


  IDENTIFICATION: ……………………………  Natural CORUNDUM
  
  TRADE NAME: ……………………………BLACK STAR SAPPHIRE

  
  Geographic Origin: …………………………… Chantaburi, Thailand

  Treatment: ………………………….   No indication of any treatment

  
 
Information about BLACK STAR SAPPHIRE: 

In rare Black star sapphires, thanks to rutile and ilmenite, we see an optical effect - a gold or silver 6-ray star. This black star sapphire has a 12-ray star, which makes it an exceptional example of nature.

GEMOLOGICAL REPORT                                                        № 125
  Gemologist Olga Melikian | WA: https://wa.me/79990437349                            28/05/2025
  Telegram: @olgamelikianofficial | https://melikianjewelry.com                     

  10x glass: …………..…quality very good, no cracks, no resin filling
  Refractive Index: ……………………………….…….… 1.760 - 1.770
  Polariscope: ………………………………..…………..………………..
  Dichroscope: ………………………………….……… no pleochroism  
  UV fluorescence: ………….………………………… no fluorescence
  Chelsea Filter: …………………………….…………………………….
  Color change | Alexandrite effect (daylight | artificial light):…………


  Microscope: No indication of any treatment (fillers, heating). Due to inclusions of rutile and ilmenite, we observe the asterism effect in this sapphire.

  Special properties:
  Opalescence | adularescence | iridescence ………………………No
  Cats eye effect…………………………………………….……….…No
  Asterism……………………………………………………………….Yes 
                        12-ray star which golden (6-ray) and silver star (6-ray)
  
Please, read the gemreports materials in the sections «Diagnostic methods and results», «Detailed gemological comment», «Cost estimation» on pages 5, 6.

GEMOLOGICAL REPORT                                                        № 126
  Gemologist Olga Melikian | WA: https://wa.me/79990437349                            10/06/2025
  Telegram: @olgamelikianofficial | https://melikianjewelry.com                     


  Weight of jewelry:..………………………………….……….…  5.26 g
  Weight (Estimate stone weight):..……………………………  4.96 ct
  Stone Measurements: ………………….……11.55x10.77x5.85 mm
  Сut: ……………………………………………..…………….. octagon
  Color  (Russian emerald quality system): …….…. 3 | intense green 
  Clarity: (Russian emerald quality system): ……………………. 3 | I3


  IDENTIFICATION: …………Gold 14k ring with Natural EMERALD
  
  TRADE NAME: ………….…………….………….  URAL EMERALD

  
  Geographic Origin: ……………..…………… Malyshevo mine, Ural

  Treatment: ……………………..………………..………. F1(Minor oil)


 Information about ring with URAL EMERALD: 

The Ural emerald is one of the most expensive and valuable precious stones. Since this emerald is inserted into the ring, the weight of the stone and the height measurement are calculated characteristics. The weight error is up to 10%.

RESULTS OF DIAGNOSTIC METHODS
 GEMOLOGICAL REPORT                                                        № 126
  Gemologist Olga Melikian | WA: https://wa.me/79990437349                            10/06/2025
  Telegram: @olgamelikianofficial | https://melikianjewelry.com                     

  10x glass: …………………………………………………………………
  mineral inclusions in the center of the stone, many gas-liquid 
  inclusions
  Refractive Index: ……………………….……………….… 1.575-1.602
  Polariscope: …………………………………………………anisotropic
  Dichroscope: …………………………yellowish green / bluish green 
  UV fluorescence: ………….………………………… no fluorescence
  Chelsea Filter: ……………………………………………..… light pink
  Color change | Alexandrite effect (daylight | artificial light): ……No

  Microscope: treatment - minor oil. There are many characteristic tremolite-actinolite inclusions, many gas-liquid inclusions of a characteristic elongated shape.

  Special properties:
  Opalescence | adularescence | iridescence ………………………No
  Cats eye effect…………………………………………….……….…No
  Asterism……………………………………….………………………No

DETAILED GEMOLOGICAL COMMENT
To accurately determine the mining region, the gem report should be supplemented with  Raman microscope study, obtaining the spectrum of this Ural emerald, and comparing it with the base spectrum of emeralds from Malyshevo mine, Ural.

COST ESTIMATION

  Considering the characteristics of this Ural emerald:

  Weight (Estimate stone weight)……..………………….……..  4.96 ct
  Сut: ……………………………………………..……….…….   oсtagon
  Color  (Russian emerald quality system): ………… 3 | intense green 
  Clarity: (Russian emerald quality system): ……………………. 3 | I3
  Geographic Origin: …………………………… Malyshevo mine, Ural
  Treatment: …………………….….………………………. F1(Minor oil)

Recommended market value corridor (retail price) of Ural Emerald weighing from 5 carat, F1 treatment and intense green color (3), as of 10.06.2025:

1200-1500 $ per 1 ct

Note: the recommended market value corridor in indicated on this date. The price may change over time. The value corridor is an opportunity for the buyer/ seller to get an objective assessment of the value of this stone. With the receipt of new gemological research  data, the cost corridor may be revised.