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Heart|Lab Grown|IGI

1.66ct D FL Heart Lab Grown Diamond

ID • D/FL • IGI LG825660136

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG825660136

Diamond specifications and retailer prices

From $1,006 AUD
$705 USD
As of November 2, 2026
Save $5,663 AUD (85%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $6,669 AUD at With Clarity · As of November 2, 2026
View at With Clarity

About this 1.66ct lab-grown heart diamond

This 1.66ct lab-grown heart 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 LG825660136 or 825660136. Listed at 19 retailers as of November 2, 2026, with prices from $1,006 to $6,669, a $5,663 spread on the same certified stone. With Clarity lists it at $6,669. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.66
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle41.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG825660136
Dimensions8.05 × 7.24 × 4.93 mm
L/W Ratio1.11
Girdle conditionFaceted
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
8.05 mm7.24 mm1.66 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG825660136
Side View
Table 64.0%Crown 35°Girdle: MED-STKPavilion 41.3°Culet: NoneDepth 61.2%

Caratlytics Score

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

Price History

Last verified: Nov 2
Current: $2,173 AUD|Low: $1,006 AUD|High: $7,577 AUD|Avg: $2,943 AUD|-19.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
With Clarity
November 2, 2026
Retailer 12$1,006 AUD
Retailer 6$1,109 AUD
Retailer 3$1,183 AUD
Retailer 8$1,229 AUD
Retailer 9$1,308 AUD
Retailer 17$1,434 AUD
Retailer 7$1,532 AUD
Retailer 13$1,896 AUD
Retailer 5$1,908 AUD
Retailer 18$1,921 AUD
Retailer 1$2,173 AUD
Retailer 11$2,687 AUD
Retailer 4$3,325 AUD
Retailer 16$3,905 AUD
Retailer 2$4,077 AUD
Retailer 15$4,668 AUD
Retailer 10$4,688 AUD
Retailer 14$5,693 AUD
With Clarity$6,669 AUD

37 data points across 19 retailers

19 retailers$1,006 AUD to $6,669 AUD

A
Cheapest Retailer
-
$1,006 AUD
$705 USD
A
Retailer 2
-
$1,109 AUD
$777 USD
View
A
Retailer 3
-
$1,183 AUD
$829 USD
View
Retailer 4
-
$1,229 AUD
$861 USD
View
Price last confirmed 16 days ago
A
Retailer 5
-
$1,308 AUD
$917 USD
View
Final sale: no returns
A
Retailer 6
-
$1,434 AUD
$1,005 USD
View
A
Retailer 7
-
$1,532 AUD
$1,074 USD
View
B+
Retailer 8
-
$1,896 AUD
£1,047 GBP
View
B+
Retailer 9
-
$1,908 AUD
$1,337 USD
View
B+
Retailer 10
-
$1,921 AUD
$1,346 USD
View
B+
Retailer 11
-
$2,173 AUD
ZAR 24,602 ZAR
View
B+
Retailer 12
-
$2,687 AUD
$1,883 USD
View
B+
Retailer 13
-
$3,325 AUD
$2,330 USD
View
B+
Retailer 14
-
$3,905 AUD
$2,737 USD
View
B
Retailer 15
-
$4,077 AUD
$2,857 USD
View
B
Retailer 16
-
$4,668 AUD
£2,576 GBP
View
B
Retailer 17
-
$4,688 AUD
SGD 4,440 SGD
View
B
Retailer 18
-
$5,693 AUD
$3,990 USD
View
Most Expensive
B
With Clarity
825660136 · Nov 2
$6,669 AUD
$4,674 USD
View
18 more retailers have this diamond
Prices start from $1,006 AUDSave up to $5,663 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
1.66ct Heart
$1,006 AUD