Heart|Lab Grown|IGI

1.21ct D IF Heart Lab Grown Diamond

VG • D/IF • IGI LG836619501

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG836619501

Diamond specifications and retailer prices

From €221 EUR
$247 USD
As of October 30, 2026
Save €1,560 EUR (88%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: €1,781 EUR at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.21ct lab-grown heart diamond

This 1.21ct lab-grown heart sits in the classic one-carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG836619501 or 836619501. Listed at 20 retailers as of October 30, 2026, with prices from €221 to €1,781, a €1,560 spread on the same certified stone. Brilliant Earth lists it at €1,781. 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

1.21
Carat
D
Colour
IF
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.9°
Pavilion angle37.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG836619501
Dimensions6.64 × 7.31 × 4.24 mm
L/W Ratio1.10
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
6.64 mm7.31 mm1.21 ctD / IF
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG836619501
Side View
Table 54.0%Crown 34.9°Girdle: STK-THKPavilion 37.7°Culet: NoneDepth 58.0%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: €1,781 EUR|Low: €221 EUR|High: €1,781 EUR|Avg: €638 EUR
Brilliant Earth
Retailer 2
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Retailer 21
November 1, 2026
Retailer 8€221 EUR
Retailer 4€248 EUR
Retailer 20€257 EUR
Retailer 7€275 EUR
Retailer 11€275 EUR
Retailer 15€283 EUR
Retailer 14€434 EUR
Retailer 6€461 EUR
Retailer 17€470 EUR
Retailer 2€474 EUR
Retailer 5€487 EUR
Retailer 16€521 EUR
Retailer 19€668 EUR
Retailer 9€687 EUR
Retailer 18€693 EUR
Retailer 12€882 EUR
Retailer 3€916 EUR
Retailer 10€928 EUR
Retailer 21€999 EUR
Retailer 13€1,099 EUR
Brilliant Earth€1,781 EUR

28 data points across 21 retailers

20 retailers€221 EUR to €1,781 EUR

A
Cheapest Retailer
-
€221 EUR
$247 USD
A
Retailer 2
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€248 EUR
$277 USD
View
Final sale: no returns
A
Retailer 3
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€257 EUR
$287 USD
View
A
Retailer 4
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€275 EUR
$307 USD
View
Retailer 5
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€275 EUR
$307 USD
View
Price last confirmed 7 days ago
A
Retailer 6
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€283 EUR
£249 GBP
View
A
Retailer 7
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€461 EUR
$515 USD
View
A
Retailer 8
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€470 EUR
View
A
Retailer 9
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€474 EUR
ZAR 8,550 ZAR
View
A
Retailer 10
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€487 EUR
$544 USD
View
A
Retailer 11
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€521 EUR
£459 GBP
View
B+
Retailer 12
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€668 EUR
A$1,148 AUD
View
B+
Retailer 13
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€687 EUR
$768 USD
View
B+
Retailer 14
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€693 EUR
$774 USD
View
B+
Retailer 15
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€882 EUR
$985 USD
View
B+
Retailer 16
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€916 EUR
SGD 1,383 SGD
View
B+
Retailer 17
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€928 EUR
$1,037 USD
View
B+
Retailer 18
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€999 EUR
$1,116 USD
View
B
Retailer 19
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€1,099 EUR
£967 GBP
View
Most Expensive
B
Brilliant Earth
21695593A · Oct 31
€1,781 EUR
$1,990 USD
View
19 more retailers have this diamond
Prices start from €221 EURSave up to €1,560 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
1.21ct Heart
€221 EUR