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Heart|Lab Grown|IGI

1.51ct D IF Heart Lab Grown Diamond

VG • D/IF • IGI LG816615642

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG816615642

Diamond specifications and retailer prices

From €256 EUR
$286 USD
As of October 30, 2026
Save €2,197 EUR (90%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: €2,453 EUR at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.51ct lab-grown heart diamond

This 1.51ct lab-grown heart sits in the one-and-a-half to two carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG816615642 or 816615642. Listed at 15 retailers as of October 30, 2026, with prices from €256 to €2,453, a €2,197 spread on the same certified stone. Brilliant Earth lists it at €2,453. 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

1.51
Carat
D
Color
IF
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.3°
Pavilion angle38°
OriginLab Grown
Grading LabIGI
CertificateIGI LG816615642
Dimensions8.00 × 7.06 × 4.63 mm
L/W Ratio1.13
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
8.00 mm7.06 mm1.51 ctD / IF
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG816615642
Side View
Table 56.0%Crown 35.3°Girdle: STK-THKPavilion 38°Culet: NoneDepth 57.9%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: €2,453 EUR|Low: €256 EUR|High: €2,990 EUR|Avg: €959 EUR|-13.8%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
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Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
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Retailer 19
November 1, 2026
Retailer 7€256 EUR
Retailer 3€289 EUR
Retailer 18€296 EUR
Retailer 12€370 EUR
Retailer 19€397 EUR
Retailer 17€427 EUR
Retailer 15€430 EUR
Retailer 16€550 EUR
Retailer 10€637 EUR
Retailer 9€671 EUR
Retailer 14€816 EUR
Retailer 13€863 EUR
Retailer 8€918 EUR
Retailer 5€1,125 EUR
Retailer 6€1,240 EUR
Retailer 11€1,276 EUR
Retailer 2€1,402 EUR
Retailer 4€2,274 EUR
Brilliant Earth€2,453 EUR

23 data points across 19 retailers

15 retailers€256 EUR to €2,453 EUR

A
Cheapest Retailer
-
€256 EUR
$286 USD
A
Retailer 2
-
€289 EUR
$323 USD
View
Final sale: no returns
A
Retailer 3
-
€296 EUR
$331 USD
View
A
Retailer 4
-
€370 EUR
£325 GBP
View
A
Retailer 5
-
€397 EUR
$444 USD
View
A
Retailer 6
-
€427 EUR
$477 USD
View
A
Retailer 7
-
€430 EUR
$480 USD
View
A
Retailer 8
-
€550 EUR
$615 USD
View
A
Retailer 9
-
€816 EUR
A$1,402 AUD
View
A
Retailer 10
-
€863 EUR
$964 USD
View
B+
Retailer 11
-
€1,125 EUR
$1,257 USD
View
B+
Retailer 12
-
€1,240 EUR
$1,385 USD
View
B+
Retailer 13
-
€1,402 EUR
£1,233 GBP
View
B
Retailer 14
-
€2,274 EUR
$2,540 USD
View
Most Expensive
B
Brilliant Earth
21730607Y · Oct 31
€2,453 EUR
$2,740 USD
View
14 more retailers have this diamond
Prices start from €256 EURSave up to €2,197 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
1.51ct Heart
€256 EUR