1.71ct Tanzanite, Oval
$640 inc VAT
- Gemstone
- Tanzanite
- Colour
- Violetish Blue
- Shape
- Oval
- Carat weight
- 1.71ct
- Measurements
- 8.48 x 6.54 mm
- Origin
- Tanzania
- Treatment
- Heated
- Certificate
- GSI
- Reference
- CTD-G19616
About the treatment: Heating is the most common gemstone treatment. It improves colour and clarity, it is permanent, and the stone needs no special care.
- Natural gemstone, sold with its measurements and any known treatment
- Free delivery in the UK and Ireland, free returns within 30 days
- Set it in a ring or pendant with Add jewellery, made to order and hallmarked
Set your 1.71ct Tanzanite, Oval
Choose a style and a metal. Each price is the finished piece with this stone set in it, made to order in our Cotswolds workshop and hallmarked. Rather have something designed for you? Ask us on WhatsApp.
Similar tanzanites
About tanzanite
Tanzanite is found in only one place in the world, near Mount Kilimanjaro in Tanzania. Its violet-blue changes with the light. At 6 to 6.5 on the Mohs scale it is softer than sapphire, so it suits earrings, pendants or a ring with a protective setting. Almost all tanzanite is heated. It is a birthstone for December.
Have it set in a ring
We can set this stone in any of our engagement ring designs, from a classic claw solitaire to a diamond halo, or design a ring around it. Every ring is made to order in our Cotswolds workshop and hallmarked. Try the shapes and settings in Ring Maker, then send us this stone on WhatsApp for a quote.
Coloured gemstone questions
Can I have a loose gemstone set in a ring?
Yes. Every stone here can be set in any of our ring designs, or in a ring designed for you. We make each ring to order in our Cotswolds workshop, usually in 3 to 4 weeks, and every ring is hallmarked.
Are your gemstones natural?
Yes, every gemstone listed is natural. Many coloured stones are heated to improve their colour, which is normal and permanent. Any treatment we know of is shown on the stone's page.
Which gemstones are best for an everyday ring?
Sapphire and ruby are the hardest gemstones after diamond, so they suit rings worn every day. Emerald, tanzanite, aquamarine and morganite are softer, so we suggest a protective setting such as a halo or rub-over.
What does the certificate tell me?
A gemstone certificate from a laboratory such as GRS, Gübelin, SSEF or GIA confirms the stone is natural, names it and records any treatment. Use the certificate filter to see only certified stones.
Why do coloured gemstones cost less than diamonds of the same size?
Many coloured stones are more plentiful than fine diamonds, and they are priced mostly on colour rather than on a fixed grading scale. The finest rubies, sapphires and emeralds can cost more than a diamond, but most good stones cost far less, so you can choose a larger stone for your budget.
What is the difference between heated and unheated?
Most sapphires and rubies are heated, which improves their colour and is permanent. Unheated stones of the same quality are rarer and cost more. Both are natural gemstones; the stone's page shows which it is.
Can I see the stone before I buy?
Every stone has its own photo, and many have a video. If you would like more pictures, a video call or a stone held for you to see, ask us on WhatsApp and we will help.
How long does delivery take?
Loose gemstones are usually delivered in 7 to 10 days, with free delivery in the UK and Ireland and free returns within 30 days.