Opals
Gemstones
Jewelry
Coins
You have not bid on this auction.
Unseen Spark 17.30 Ct Natural Sphene From Madagascar Mine
- SKU
- Dimensions (mm)
- 15.600 x 14.600 x 10.400mm
- Weight (cts)
- 17.300
- Treatment
- No Treatment
- Clarity
- VS
- Type
- Faceted
- Colours
-
History and Introduction
Sphene is a very rare brilliant yellowish-green, green, orange or brown gemstone with a high luster, also known as "titanite" due to its titanium content. The name "sphene" comes from the Greek word, "sphen", meaning "wedge", which alludes to the formation of its crystals. Due to its high dispersion, when brilliant-cut, sphene can exhibit a fire similar to that of diamond.
Sphene has been known since 1787 and was named according to its titanium content in 1795 by Martin Klaproth. In 1801, it was given the name "sphene" by French mineralogist, Rene Just Hauy. In 1982, the International Mineralogical Association Commission on New Minerals and Mineral Names (CNMMN) decided to use the name "titanite" rather than "sphene". However, both "sphene" and "titanite" continue to be recognized in mineralogy circles, and sphene is the most frequently used gemology term.
- SKU
- Dimensions (mm)
- 15.600 x 14.600 x 10.400 mm
- Weight (cts)
- 17.300
- Treatment
- No Treatment
- Clarity
- VS
- Type
- Faceted
- Colours
-
History and Introduction
Sphene is a very rare brilliant yellowish-green, green, orange or brown gemstone with a high luster, also known as "titanite" due to its titanium content. The name "sphene" comes from the Greek word, "sphen", meaning "wedge", which alludes to the formation of its crystals. Due to its high dispersion, when brilliant-cut, sphene can exhibit a fire similar to that of diamond.
Sphene has been known since 1787 and was named according to its titanium content in 1795 by Martin Klaproth. In 1801, it was given the name "sphene" by French mineralogist, Rene Just Hauy. In 1982, the International Mineralogical Association Commission on New Minerals and Mineral Names (CNMMN) decided to use the name "titanite" rather than "sphene". However, both "sphene" and "titanite" continue to be recognized in mineralogy circles, and sphene is the most frequently used gemology term.
| Shipping provider | Shipping to Thailand | Shipping to rest of world |
|---|---|---|
| Standard Shipping - Tracked | $8.00 / 7 days | $15.00 / 21 days |
|
Thailand
Standard Shipping - Tracked is discounted to $10.00 on orders with 2 or more items
Rest of the world
Standard Shipping - Tracked is discounted to $20.00 on orders with 2 or more items
|
||
| FedEx | $35.00 / 2 days | $35.00 / 4 days |
|
Thailand
FedEx is discounted to $35.00 on orders with 2 or more items
Rest of the world
FedEx is discounted to $40.00 on orders with 2 or more items
|
||
-
PositiveSadly it garnets were a lot darker compared to the video, but i think thats ok for the price.
-
Positive
Really amazing beautiful Topaz !!!!!!
Why are users outbidding themselves?
When a bid is placed, this is the maximum amount a person is willing to bid for the product. Our system will then automatically bid on behalf of the bidder, incrementally increasing the bid up to the maximum to maintain their position as the highest bidder.
When there is an icon indicating 'Automatic Bid', it means our system is actively placing bids for the bidder based on their maximum bid. This may appear as if bidders are outbidding themselves, but it's simply a result of the system updating the bid to reflect the bidders maximum limit.
