SHOP 160,000+ BUY IT NOW GEMS
OR TRY OUR AUCTIONS WITH NO BUYERS FEES
100% NATURAL GEMS & VERIFIED SELLERS
Gemma AI

You have not bid on this auction.

Reserve Not Met
Current Bid
8
Bids
Today 02:36 pm

Presenting ~ Hackmanite 4.40 ct Photoluminescent & Tenebrescent

8 bids
2407 views
23 watching
Details
SKU
Dimensions (mm)
12.45 x 10.62 x 5.8mm
Weight (cts)
4.4
Treatment
No Treatment
Type
Faceted
Shape
Cushion
Colours
Description

General Description:

Discovered in Greenland in the late 1890’s, hackmanite is named for Finnish geologist Victor Hackman. It is a rare occurrence to find gem-grade hackmanite; at best, most crystals are translucent. Hackmanite is the light pink to pale violet variety of sodalite. It is a particularly unusual gem because it exhibits a special optical property known as “tenebrescence,” a type of reversible photochromism. This feature allows the gems to temporarily change color when exposed to different light forms. While hackmanite gems are usually pink to violet, the color quickly fades to gray or greenish-white in sunlight, and will slowly return to the original color after changing the light. Its tenebrescent property makes hackmanite a prized mineral for collectors.

About us:
We have been in gemstones business for over 15 years now and Successful member of GRA for over 8 years. We constantly try to improve our Gemstones Quality and improve our photography quality on daily basis. We do not deal in synthetics and Manmade gemstones and we fully disclose any treatment if there is.


General Description:

Once proposed to be the national gemstone of the United States, tourmaline is found all over the world and in a variety of colors. Tourmaline is the most colorful of all gemstones because, according to an ancient Egyptian legend, it passed through a rainbow on its journey to Earth and brought all of the colors of the rainbow with it. Tourmaline is a mineral group comprised of multiple species of complex borosilicates. Lovingly referred to by mineralogists as the garbage can mineral, its crystal structure allows for the incorporation of a wide range of elements, many of which cause the stunning color varieties and spectacular zoning of tourmaline, including copper, manganese, iron, and titanium. Major tourmaline species include liddicoatite, dravite, uvite, schorl, and elbaite.


Shipping Policy:
Please choose shipping method at checkout page. We also provide combined shipping for no additional cost for FedEx and DHL. Shipping Options to choose from are;

FedExDHLRegisteredTaxes and Import Duties:
Please confirm with your country's customs office for the item you are purchasing. We are not responsible for the Taxes and Import Duties buyers might face as it varies from country to country.

Payment Methods Accepted:
Direct Deposit
Credit Cards 
Escrow
PayPal
Stripe

Return/Refund Policy:
If for any reasons buyer wants to return item, please do so within 14 days, return shipping charges will be paid by Buyer. In the event of negative feedback no refund will be made. Please communicate with us before unhappy Feedbacks.

Shipping
Shipping provider Shipping to Thailand Shipping to rest of world Combined Shipping (Thailand) Combined Shipping (rest of the world)
Standard Shipping - Tracked
/ 7 days
/ 21 days
on orders with 2 items or more
on orders with 2 items or more
FedEx
/ 5 days
/ 5 days
on orders with 2 items or more
on orders with 2 items or more
DHL
/ 5 days
/ 5 days
on orders with 2 items or more
on orders with 2 items or more
Store
Presenting ~ Hackmanite 4.40 ct Photoluminescent & Tenebrescent
Bangkok, Thailand
Owned by zaragems
Recent Feedback
  • opaljak
    opaljak
    Positive

    Paid and shipped - no feedback left after 100 days

  • btoth88
    btoth88
    Positive

    Paid and shipped - no feedback left after 100 days

  • opaljak
    opaljak
    Positive

    Paid and shipped - no feedback left after 100 days

  • opaljak
    opaljak
    Positive

    Paid and shipped - no feedback left after 100 days

  • opaljak
    opaljak
    Positive

    Paid and shipped - no feedback left after 100 days

Bids History (8)

Reserve not met

mrandersen99
mrandersen99
2 years ago
Purchased from this seller previously
mrandersen99
mrandersen99
2 years ago
Purchased from this seller previously
mrandersen99
mrandersen99
2 years ago
Purchased from this seller previously
mrandersen99
mrandersen99
2 years ago
Purchased from this seller previously
kwackydr
kwackydr
2 years ago
Purchased from this seller previously
kwackydr
kwackydr
2 years ago
Purchased from this seller previously
lucascn
lucascn
2 years ago
lucascn
lucascn
2 years ago

Why are users outbidding themselves?

Automatic Bid icon
Automatic Bid

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.

Audit

This product has been audited by a Gemstone Sheriff and they have found the following:
  • Description Accurate
  • Pictures Accurate

Comments

The Verified Seller responsible for this item has diligently provided us with accurate and comprehensive information, encompassing crucial details such as weight, dimensions, and treatment. It is important to reiterate our commitment to upholding the highest standards of integrity and transparency in the gemstone industry. As part of our policy, we strictly permit the sale of exclusively natural gemstones that have been sourced directly from the Earth. However, in the event that a gemstone has undergone any form of treatment, it is mandatory for the seller to provide full disclosure regarding the treatment process. Furthermore, we would like to emphasize that man-made gemstones, including simulants and imitations, are strictly prohibited on our platform. We prioritize the promotion of authentic, natural gemstones to ensure a genuine and trustworthy marketplace for our valued customers. Should you have any further inquiries or require additional assistance, please do not hesitate to reach out. We are here to assist you and provide a seamless experience on Gem Rock Auctions.

This audit was requested 2 years ago
Last updated 2 years ago

Shipping Details

Costs:
Transit:
5 days via FedEx
Ships from:
Thailand

Payment Options

  • stripe

Overview

Listing Type : Standard
Product ID : 2131739
Estimated RRP :
Starting Bid :
Starts : 21st November 2025 02:36 pm PST
Ends : 5th December 2025 02:36 pm PST
* All prices are in USD

You may also like