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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 €629 EUR
$705 USD
As of November 2, 2026
Save €3,539 EUR (85%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: €4,167 EUR 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 €629 to €4,167, a €3,539 spread on the same certified stone. With Clarity lists it at €4,167. 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
Color
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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: €1,679 EUR|Low: €629 EUR|High: €4,734 EUR|Avg: €1,839 EUR|-8.5%
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 11€629 EUR
Retailer 6€693 EUR
Retailer 3€739 EUR
Retailer 8€768 EUR
Retailer 9€818 EUR
Retailer 17€896 EUR
Retailer 7€958 EUR
Retailer 12€1,185 EUR
Retailer 5€1,192 EUR
Retailer 18€1,200 EUR
Retailer 16€1,358 EUR
Retailer 1€1,679 EUR
Retailer 4€2,077 EUR
Retailer 15€2,440 EUR
Retailer 2€2,548 EUR
Retailer 14€2,917 EUR
Retailer 10€2,929 EUR
Retailer 13€3,557 EUR
With Clarity€4,167 EUR

37 data points across 19 retailers

19 retailers€629 EUR to €4,167 EUR

A
Cheapest Retailer
-
€629 EUR
$705 USD
A
Retailer 2
-
€693 EUR
$777 USD
View
A
Retailer 3
-
€739 EUR
$829 USD
View
Retailer 4
-
€768 EUR
$861 USD
View
Price last confirmed 16 days ago
A
Retailer 5
-
€818 EUR
$917 USD
View
Final sale: no returns
A
Retailer 6
-
€896 EUR
$1,005 USD
View
A
Retailer 7
-
€958 EUR
$1,074 USD
View
B+
Retailer 8
-
€1,185 EUR
£1,047 GBP
View
B+
Retailer 9
-
€1,192 EUR
$1,337 USD
View
B+
Retailer 10
-
€1,200 EUR
$1,346 USD
View
B+
Retailer 11
-
€1,358 EUR
ZAR 24,613 ZAR
View
B+
Retailer 12
-
€1,679 EUR
$1,883 USD
View
B+
Retailer 13
-
€2,077 EUR
$2,330 USD
View
B+
Retailer 14
-
€2,440 EUR
$2,737 USD
View
B
Retailer 15
-
€2,548 EUR
$2,857 USD
View
B
Retailer 16
-
€2,917 EUR
£2,576 GBP
View
B
Retailer 17
-
€2,929 EUR
SGD 4,440 SGD
View
B
Retailer 18
-
€3,557 EUR
$3,990 USD
View
Most Expensive
B
With Clarity
825660136 · Nov 2
€4,167 EUR
$4,674 USD
View
18 more retailers have this diamond
Prices start from €629 EURSave up to €3,539 EUR

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
€629 EUR