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Heart|Lab Grown|IGI

1.91ct D FL Heart Lab Grown Diamond

EX • D/FL • IGI LG831604009

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG831604009

Diamond specifications and retailer prices

From €869 EUR
$975 USD
As of November 2, 2026
Save €3,303 EUR (79%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: €4,173 EUR at Brilliant Earth · As of November 2, 2026
View at Brilliant Earth

About this 1.91ct lab-grown heart diamond

This 1.91ct 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 LG831604009 or 831604009. Listed at 21 retailers as of November 2, 2026, with prices from €869 to €4,173, a €3,303 spread on the same certified stone. Brilliant Earth lists it at €4,173. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.91
Carat
D
Colour
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle40°
OriginLab Grown
Grading LabIGI
CertificateIGI LG831604009
Dimensions7.60 × 8.63 × 5.02 mm
L/W Ratio1.14
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
7.60 mm8.63 mm1.91 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG831604009
Side View
Table 58.0%Crown 34°Girdle: MED-STKPavilion 40°Culet: NoneDepth 58.2%

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: €4,173 EUR|Low: €869 EUR|High: €5,501 EUR|Avg: €2,451 EUR|-24.1%
Brilliant Earth
Retailer 2
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Retailer 20
November 3, 2026
Retailer 16€869 EUR
Retailer 8€974 EUR
Retailer 3€1,008 EUR
Retailer 17€1,140 EUR
Retailer 11€1,164 EUR
Retailer 5€1,206 EUR
Retailer 6€1,377 EUR
Retailer 19€1,462 EUR
Retailer 13€1,556 EUR
Retailer 7€1,581 EUR
Retailer 14€1,856 EUR
Retailer 4€1,890 EUR
Retailer 15€1,954 EUR
Retailer 2€3,128 EUR
Retailer 20€3,269 EUR
Retailer 9€3,381 EUR
Retailer 18€3,421 EUR
Retailer 12€3,513 EUR
Retailer 10€3,636 EUR
Brilliant Earth€4,173 EUR

29 data points across 20 retailers

21 retailers€869 EUR to €4,173 EUR

A
Cheapest Retailer
-
€869 EUR
$975 USD
A
Retailer 2
-
€974 EUR
$1,092 USD
View
Final sale: no returns
A
Retailer 3
-
€1,008 EUR
$1,131 USD
View
A
Retailer 4
-
€1,140 EUR
£1,007 GBP
View
A
Retailer 5
-
€1,164 EUR
HK$10,200 HKD
View
A
Retailer 6
-
€1,206 EUR
$1,353 USD
View
Retailer 7
-
€1,341 EUR
$1,504 USD
View
Price last confirmed 21 days ago
B+
Retailer 8
-
€1,377 EUR
$1,545 USD
View
B+
Retailer 9
-
€1,462 EUR
$1,640 USD
View
B+
Retailer 10
-
€1,556 EUR
£1,374 GBP
View
B+
Retailer 11
-
€1,581 EUR
$1,773 USD
View
B+
Retailer 12
-
€1,856 EUR
ZAR 33,621 ZAR
View
B+
Retailer 13
-
€1,890 EUR
$2,120 USD
View
B+
Retailer 14
-
€1,954 EUR
$2,192 USD
View
B
Retailer 15
-
€3,128 EUR
$3,508 USD
View
B
Retailer 16
-
€3,269 EUR
$3,667 USD
View
B
Retailer 17
-
€3,381 EUR
SGD 5,124 SGD
View
B
Retailer 18
-
€3,421 EUR
£3,021 GBP
View
B
Retailer 19
-
€3,513 EUR
$3,940 USD
View
B
Retailer 20
-
€3,636 EUR
$4,078 USD
View
Most Expensive
B
Brilliant Earth
21605244A · Nov 2
€4,173 EUR
$4,680 USD
View
20 more retailers have this diamond
Prices start from €869 EURSave up to €3,303 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
1.91ct Heart
€869 EUR