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Radiant|Lab Grown|IGI

1.86ct D FL Radiant Lab Grown Diamond

ID • D/FL • IGI LG825660146

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG825660146

Diamond specifications and retailer prices

From $920 AUD
$646 USD
As of October 30, 2026
Save $5,515 AUD (86%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $6,435 AUD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.86ct lab-grown radiant diamond

This 1.86ct lab-grown radiant sits in the one-and-a-half to two carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG825660146 or 825660146. Listed at 22 retailers as of October 30, 2026, with prices from $920 to $6,435, a $5,515 spread on the same certified stone. Brilliant Earth lists it at $6,435. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.86
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle45.2°
Pavilion angle35.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG825660146
Dimensions8.58 × 6.01 × 4.13 mm
L/W Ratio1.43
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
8.58 mm6.01 mm1.86 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG825660146
Side View
Table 65.0%Crown 45.2°Girdle: MED-STKPavilion 35.2°Culet: NoneDepth 68.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $6,435 AUD|Low: $920 AUD|High: $8,485 AUD|Avg: $2,947 AUD|-24.2%
Brilliant Earth
Retailer 2
Retailer 3
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Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
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Retailer 15
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Retailer 17
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Retailer 21
October 31, 2026
Retailer 11$920 AUD
Retailer 20$999 AUD
Retailer 10$1,066 AUD
Retailer 7$1,072 AUD
Retailer 16$1,317 AUD
Retailer 3$1,434 AUD
Retailer 13$1,704 AUD
Retailer 17$1,742 AUD
Retailer 2$1,824 AUD
Retailer 15$1,959 AUD
Retailer 5$2,261 AUD
Retailer 4$2,478 AUD
Retailer 8$2,998 AUD
Retailer 6$3,319 AUD
Retailer 19$3,505 AUD
Retailer 12$3,679 AUD
Retailer 9$3,875 AUD
Retailer 18$4,498 AUD
Retailer 21$5,460 AUD
Brilliant Earth$6,435 AUD
Retailer 14$6,435 AUD

32 data points across 21 retailers

22 retailers$920 AUD to $6,435 AUD

A
Cheapest Retailer
-
$920 AUD
$646 USD
A
Retailer 2
-
$999 AUD
$702 USD
View
A
Retailer 3
-
$1,066 AUD
$749 USD
View
A
Retailer 4
-
$1,072 AUD
$753 USD
View
Final sale: no returns
Retailer 5
-
$1,137 AUD
$799 USD
View
Price last confirmed 15 days ago
A
Retailer 6
-
$1,317 AUD
$925 USD
View
A
Retailer 7
-
$1,434 AUD
$1,007 USD
View
A
Retailer 8
-
$1,704 AUD
£942 GBP
View
A
Retailer 9
-
$1,742 AUD
$1,224 USD
View
A
Retailer 10
-
$1,824 AUD
€1,220 EUR
View
B+
Retailer 11
-
$1,959 AUD
ZAR 22,229 ZAR
View
B+
Retailer 12
-
$2,261 AUD
$1,588 USD
View
B+
Retailer 13
-
$2,478 AUD
$1,741 USD
View
B+
Retailer 14
-
$2,998 AUD
$2,106 USD
View
B+
Retailer 15
-
$3,319 AUD
£1,836 GBP
View
B+
Retailer 16
-
$3,505 AUD
$2,462 USD
View
B+
Retailer 17
-
$3,679 AUD
$2,584 USD
View
B+
Retailer 18
-
$3,875 AUD
SGD 3,678 SGD
View
B
Retailer 19
-
$4,498 AUD
£2,488 GBP
View
B
Retailer 20
-
$5,460 AUD
$3,835 USD
View
Retailer 21
-
$6,435 AUD
$4,520 USD
View
Price last confirmed 10 days ago
Most Expensive
B
Brilliant Earth
21434150A · Oct 31
$6,435 AUD
$4,520 USD
View
21 more retailers have this diamond
Prices start from $920 AUDSave up to $5,515 AUD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.86ct Radiant
$920 AUD