BLUE STAR SAPPHIRE (MINERAL CORUNDUM) 2.08 ct,
Sri Lanka, MELIKIAN
Sri Lanka, MELIKIAN
GEMOLOGICAL REPORT № 142
Gemologist Olga Melikian | Max: https://max.ru/gemstones 11/06/2026
Telegram: @olgamelikianofficial | https://melikianjewelry.com
Weight: ……………………………..…….…………………….. 2.08 ct
Measurements: ……………….…..…………… 8.09x6.10x4.04 mm
Сut: ……………………………………….………..…… oval cabochon
Color / Color saturation: ……… Light blue | slightly color saturation
Clarity: ………………………………………………. semi-transparent
IDENTIFICATION: Natural SAPPHIRE (MINERAL CORUNDUM)
TRADE NAME: ……………………….… BLUE STAR SAPPHIRE
Geographic Origin: ……………………………..………… Sri Lanka
Treatment: ……………………..………. No indication of treatment
10x glass: growth zones are visible, a bright 6-rayed star, all rays
are even, and there are not inclusions or cracks on the front of the
stone
Refractive Index: …………………………….…… 1.762-1.770 0.008
Polariscope: ……………………….………………..…….. anisotropic
Dichroscope: ……………………….……… light blue to bluish white
UV fluorescence: ………….……………………………………… light
Chelsea Filter: …………………………….……………………….…….
Color change | Alexandrite effect (daylight | artificial light): ……. no
Microscope: No indication of treatment (fillers, heating).
Special properties:
Opalescence | adularescence | iridescence ………………………No
Cats eye effect…………………………………………….……….…No
Asterism……………………………………………… yes, 6-rayed star
Gemologist Olga Melikian | Max: https://max.ru/gemstones 11/06/2026
Telegram: @olgamelikianofficial | https://melikianjewelry.com
Weight: ……………………………..…….…………………….. 2.08 ct
Measurements: ……………….…..…………… 8.09x6.10x4.04 mm
Сut: ……………………………………….………..…… oval cabochon
Color / Color saturation: ……… Light blue | slightly color saturation
Clarity: ………………………………………………. semi-transparent
IDENTIFICATION: Natural SAPPHIRE (MINERAL CORUNDUM)
TRADE NAME: ……………………….… BLUE STAR SAPPHIRE
Geographic Origin: ……………………………..………… Sri Lanka
Treatment: ……………………..………. No indication of treatment
10x glass: growth zones are visible, a bright 6-rayed star, all rays
are even, and there are not inclusions or cracks on the front of the
stone
Refractive Index: …………………………….…… 1.762-1.770 0.008
Polariscope: ……………………….………………..…….. anisotropic
Dichroscope: ……………………….……… light blue to bluish white
UV fluorescence: ………….……………………………………… light
Chelsea Filter: …………………………….……………………….…….
Color change | Alexandrite effect (daylight | artificial light): ……. no
Microscope: No indication of treatment (fillers, heating).
Special properties:
Opalescence | adularescence | iridescence ………………………No
Cats eye effect…………………………………………….……….…No
Asterism……………………………………………… yes, 6-rayed star
BLUE STAR SAPPHIRE (MINERAL CORUNDUM) 2.08 ct, Sri Lanka, MELIKIAN
DETAILED GEMOLOGICAL COMMENT
To accurately determine the mining region, the gem report should be supplemented with Raman microscope study, obtaining the spectrum of this Blue star sapphire, and comparing it with the base spectrum of Blue sapphire from Sri Lanka.
Considering the characteristics of this Blue Star Sapphire:
Weight: ……………………….……..……………………….….. 2.08 ct
Сut: ……………………….…………………………..… oval cabochon
Color / Color saturation: ……… Light blue | slightly color saturation
Clarity: …………………….……………………….… semi-transparent
Geographic Origin: ……………………….…….…………… Sri Lanka
Treatment: …………………….…..….…. No indication of treatment
Recommended market value corridor (retail price) of Blue star sapphire from Sri Lanka weighing from 2 carat, a prominent and even 6-pointed star, light blue color and semi-transparent as of 11.06.2026:
500-800 $ 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.
To accurately determine the mining region, the gem report should be supplemented with Raman microscope study, obtaining the spectrum of this Blue star sapphire, and comparing it with the base spectrum of Blue sapphire from Sri Lanka.
Considering the characteristics of this Blue Star Sapphire:
Weight: ……………………….……..……………………….….. 2.08 ct
Сut: ……………………….…………………………..… oval cabochon
Color / Color saturation: ……… Light blue | slightly color saturation
Clarity: …………………….……………………….… semi-transparent
Geographic Origin: ……………………….…….…………… Sri Lanka
Treatment: …………………….…..….…. No indication of treatment
Recommended market value corridor (retail price) of Blue star sapphire from Sri Lanka weighing from 2 carat, a prominent and even 6-pointed star, light blue color and semi-transparent as of 11.06.2026:
500-800 $ 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.