Amethyst Stone (Jamunia) 3.99 Carat (4.38 Ratti) Oval Shape
SKU: TSGTL-B1-19
Gemstone & Physical Specifications
Details of this stone, with the standard gemological properties of its species.
- Weight
- 3.99 Carat (≈ 4.38 Ratti)
- Shape / Cut
- Oval Shape
- Treatment
- Un-Heated & Un-Treated
- Transparency / Clarity
- Transparent to Semi-Transparent
- Refractive Index (R.I.)
- 1.54 - 1.55
- Conclusion / Identification
- Natural Amethyst
- Dimensions
- 11.3 x 8.1 x 6.9 mm
- Origin
- Brazilian
- Color
- Medium-Dark Purple / Violet (with natural color zoning)
- Hardness
- 7
- Specific Gravity (S.G.)
- 2.66 (approx.)
- Certification Lab
- The Standard Gem Testing Laboratory
Detailed Product Description
This Amethyst Stone (Jamunia) weighs 3.99 carat (4.38 ratti) and measures 11.3 x 8.1 x 6.9 mm, with a medium-dark purple / violet colour and an oval shape. It is of Brazilian origin, declared by Ratna Gems, and comes with a lab report from The Standard Gem Testing Laboratory, which identifies it as natural amethyst.
Amethyst, known in India as Jamunia (also spelt Jamuniya) or Katela, is the purple variety of quartz. Every Ratna Gems amethyst comes with its own lab report, the most reliable confirmation of natural amethyst, because synthetic amethyst, made since the 1970s, can be very hard to tell apart without advanced testing. Colour is the main quality factor in amethyst, and each stone's value rests on its own colour, clarity, cut and weight.
Appearance
Its lab report records its colour as medium-dark purple / violet with natural colour zoning. This faceted oval cut displays gentle violet highlights and transparent to semi-transparent clarity with natural internal veils and warm color zoning. Amethyst ranges from light lavender to deep purple, and the photos and video show this stone's exact colour, faceting and proportions.
Traditional Use
In Vedic astrology, amethyst (Jamunia) is traditionally associated with Saturn (Shani), and some traditions use it as an upratna, or substitute stone, for Blue Sapphire (Neelam). Jamunia and Neelam are different gemstones. Customers buying it for astrological use usually follow their astrologer's or Pandit ji's guidance. Amethyst is also the February birthstone.
Care
Amethyst is 7 on the Mohs scale and has good toughness, so it suits a ring or pendant for everyday wear with sensible care. Easy habits keep it bright: clean it with warm soapy water and a soft cloth, and store it separately from harder gemstones such as sapphire and diamond, which can scratch it. Keep it away from heat, steam cleaners and sudden temperature changes, which can fracture amethyst, and out of prolonged strong sunlight, which can fade some amethyst. Skip harsh chemicals and hard knocks, and use ultrasonic cleaning only if a jeweller confirms it suits the stone and setting.
Compare similar stones in our Amethyst Stone (Jamunia) collection, or read the Amethyst (Jamunia) buying guide.
Frequently Asked Questions
What does the lab report say about this Jamunia?
Your lab report identifies it as natural amethyst and records its weight of 3.99 carat (4.38 ratti), dimensions of 11.3 x 8.1 x 6.9 mm, colour, shape, specific gravity and hardness, all shown in the specifications above.
Is Jamunia a substitute for Neelam?
Some Vedic astrology traditions use Jamunia (amethyst) as an upratna, or substitute stone, for Blue Sapphire (Neelam); both are traditionally associated with Saturn (Shani). Jamunia is quartz and Neelam is corundum, so they are different gemstones. This is a traditional belief, not a promise of any result; customers usually follow their astrologer's or Pandit ji's guidance.
How can I tell natural amethyst from synthetic amethyst?
Through a laboratory report, and this stone has its own: it identifies it as natural amethyst. A lab report is the most reliable confirmation, because synthetic amethyst can have essentially the same chemical, physical and optical properties as natural amethyst, so appearance and simple checks are not proof.
Can amethyst colour fade?
With normal wear, its colour is stable. Some amethyst can fade after prolonged exposure to strong light, and high heat can remove the colour, so simply store it away from sunny windows and heat.
Can this amethyst be set in a ring or pendant?
Yes, at 11.3 x 8.1 x 6.9 mm it suits a ring or pendant. Choose a secure setting, keep it away from heat and hard knocks, and share the dimensions with your jeweller so the setting fits the stone.
More from Amethyst Stone (Jamunia)
Customer Reviews
Verified feedback across our certified Amethyst Stone (Jamunia) collection. Because each natural gemstone is rare and one-of-a-kind, reviews reflect genuine patron experiences with this gemstone family.