Mined from: Indonesia

Era: Miocene Epoch
Geological Age: Approximately 17 to 23 mya

Description: Blue amber from Indonesia is one of the rarest and most visually captivating types of fossilized resin in the world. Unlike the classic golden hues of Baltic amber, Indonesian blue amber exhibits a deep, warm honey or reddish tone under normal light—but under UV or strong sunlight, it glows with a surprising and brilliant blue fluorescence. This remarkable optical effect is caused by the presence of unique aromatic hydrocarbons preserved within the fossilized resin, likely from ancient Hymenaea trees. These trees once thrived in tropical Southeast Asia during the Miocene Epoch—approximately 17 to 23 million years ago—when Indonesia's lush rainforests were still forming atop active tectonic zones.

While Dominican blue amber tends to get more press, Indonesian blue amber is often denser, sometimes clearer, and found in larger masses. The amber deposits are primarily located in the Sumatra and West Kalimantan regions, often hand-mined in remote jungle terrain. This fossilized tree resin is a tangible remnant of prehistoric biospheres, preserving not just color and chemical signatures, but sometimes even ancient plant matter or trapped insects. The Miocene Epoch, rich in evolutionary milestones, was a period when flowering plants and early mammals diversified, and this amber represents a perfect time capsule from that vibrant era.

Small
Approximate Size of 1 piece: 3.5cm x 3.5cm x 2.5cm
Approximate Weight of 1 piece: 17g

Medium
Approximate Size of 1 piece: 5cm x 3.5cm x 2.5cm
Approximate Weight of 1 piece: 21g

Large
Approximate Size of 1 piece: 5cm x 4cm x 3.5cm
Approximate Weight of 1 piece: 30g

X-Large
Approximate Size of 1 piece: 5cm x 4.5cm x 3.5cm
Approximate Weight of 1 piece: 39g

2X-Large
Approximate Size of 1 piece: 6.5cm x 4.5cm x 3.5cm
Approximate Weight of 1 piece: 53g

3X-Large
Approximate Size of 1 piece: 7cm x 4.5cm x 4.5cm
Approximate Weight of 1 piece: 73g

4X-Large
Approximate Size of 1 piece: 7.5cm x 5.5cm x 5cm
Approximate Weight of 1 piece: 115g

Quantity: 1pc

We do our best to buy quality products- although not every rock is the same. If you choose to purchase the "staff pick option", we will select the best of the batch for you. Otherwise, it will be at random from the larger batch we have in stock.