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Heart|Lab Grown|IGI

1.71ct D FL Heart Lab Grown Diamond

VG • D/FL • IGI LG830620123

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG830620123

Diamond specifications and retailer prices

From €896 EUR
£788 GBP
As of November 1, 2026
Save €2,738 EUR (75%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: €3,634 EUR at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.71ct lab-grown heart diamond

This 1.71ct 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 very-good cut grade and certified by IGI LG830620123 or 830620123. Listed at 9 retailers as of October 31, 2026, with prices from €896 to €3,634, a €2,738 spread on the same certified stone. Brilliant Earth lists it at €3,634. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.71
Carat
D
Colour
FL
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.3°
Pavilion angle38.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG830620123
Dimensions7.42 × 8.32 × 4.78 mm
L/W Ratio1.12
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
7.42 mm8.32 mm1.71 ctD / FL
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG830620123
Side View
Table 56.0%Crown 37.3°Girdle: STK-THKPavilion 38.3°Culet: NoneDepth 57.5%

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 1
Current: €3,634 EUR|Low: €896 EUR|High: €4,905 EUR|Avg: €2,141 EUR|-25.9%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 3€896 EUR
Retailer 4€1,215 EUR
Retailer 9€1,270 EUR
Retailer 6€1,283 EUR
Retailer 5€1,885 EUR
Retailer 8€2,737 EUR
Retailer 2€2,972 EUR
Retailer 7€3,232 EUR
Brilliant Earth€3,634 EUR

4 data points across 9 retailers

9 retailers€896 EUR to €3,634 EUR

A
Cheapest Retailer
-
€896 EUR
£788 GBP
B+
Retailer 2
-
€1,215 EUR
£1,069 GBP
View
B+
Retailer 3
-
€1,270 EUR
$1,419 USD
View
B+
Retailer 4
-
€1,283 EUR
$1,433 USD
View
B
Retailer 5
-
€1,885 EUR
$2,106 USD
View
B
Retailer 6
-
€2,737 EUR
$3,058 USD
View
B
Retailer 7
-
€2,972 EUR
£2,614 GBP
View
B
Retailer 8
-
€3,232 EUR
$3,611 USD
View
Most Expensive
B
Brilliant Earth
22348642A · Oct 31
€3,634 EUR
$4,060 USD
View
8 more retailers have this diamond
Prices start from €896 EURSave up to €2,738 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
1.71ct Heart
€896 EUR