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Heart|Lab Grown|IGI

1.55ct D IF Heart Lab Grown Diamond

ID • D/IF • IGI LG634457454

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG634457454

Diamond specifications and retailer prices

From €423 EUR
$473 USD
As of October 30, 2026
Save €1,542 EUR (78%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: €1,966 EUR at Brilliance · As of November 1, 2026
View at Brilliance

About this 1.55ct lab-grown heart diamond

This 1.55ct 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 top-tier cut grade and certified by IGI LG634457454 or 634457454. Listed at 17 retailers as of October 30, 2026, with prices from €423 to €1,966, a €1,542 spread on the same certified stone. Brilliance lists it at €1,966. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.55
Carat
D
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.5°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG634457454
Dimensions8.11 × 7.08 × 4.62 mm
L/W Ratio1.15
Girdle conditionFaceted
Culet sizePointed
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
8.11 mm7.08 mm1.55 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG634457454
Side View
Table 61.0%Crown 33.5°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 57.0%

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: Oct 30
Current: €1,966 EUR|Low: €406 EUR|High: €2,132 EUR|Avg: €1,003 EUR|-7.8%
Brilliance
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
November 1, 2026
Retailer 13€423 EUR
Retailer 5€474 EUR
Retailer 4€474 EUR
Retailer 14€525 EUR
Retailer 10€653 EUR
Retailer 12€705 EUR
Retailer 7€872 EUR
Retailer 9€903 EUR
Retailer 6€1,001 EUR
Retailer 11€1,182 EUR
Retailer 8€1,224 EUR
Retailer 3€1,689 EUR
Retailer 2€1,930 EUR
Brilliance€1,966 EUR

44 data points across 14 retailers

17 retailers€423 EUR to €1,966 EUR

A
Cheapest Retailer
-
€423 EUR
$473 USD
A
Retailer 2
-
€474 EUR
$529 USD
View
Final sale: no returns
A
Retailer 3
-
€474 EUR
$530 USD
View
Retailer 4
-
€525 EUR
$587 USD
View
Price last confirmed 16 days ago
A
Retailer 5
-
€525 EUR
$587 USD
View
A
Retailer 6
-
€653 EUR
$730 USD
View
A
Retailer 7
-
€705 EUR
$788 USD
View
A
Retailer 8
-
€872 EUR
£767 GBP
View
A
Retailer 9
-
€903 EUR
ZAR 16,296 ZAR
View
A
Retailer 10
-
€1,001 EUR
$1,118 USD
View
B+
Retailer 11
-
€1,182 EUR
$1,321 USD
View
B+
Retailer 12
-
€1,224 EUR
A$2,103 AUD
View
B+
Retailer 13
-
€1,689 EUR
$1,887 USD
View
B+
Retailer 14
-
€1,715 EUR
$1,916 USD
View
B
Retailer 15
-
€1,849 EUR
$2,066 USD
View
B+
Retailer 16
-
€1,930 EUR
£1,698 GBP
View
Most Expensive
B
Brilliance
D24947441 · Nov 1
€1,966 EUR
$2,196 USD
View
16 more retailers have this diamond
Prices start from €423 EURSave up to €1,542 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
1.55ct Heart
€423 EUR