Heart|Lab Grown|IGI

1.55ct D FL Heart Lab Grown Diamond

ID • D/FL • IGI LG818681478

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG818681478

Diamond specifications and retailer prices

From $579 USD
As of November 2, 2026
Save $4,561 USD (89%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $5,140 USD at Do Amore Diamonds · As of November 2, 2026
View at Do Amore Diamonds

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 FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG818681478 or 818681478. Listed at 11 retailers as of November 2, 2026, with prices from $579 to $5,140, a $4,561 spread on the same certified stone. Do Amore Diamonds lists it at $5,140. 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
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818681478
Dimensions7.11 × 8.00 × 4.73 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
7.11 mm8.00 mm1.55 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818681478
Side View
Table 60.0%Crown 37°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 59.1%

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: $5,140 USD|Low: $579 USD|High: $7,390 USD|Avg: $2,383 USD|-30.4%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 30, 2026
Retailer 6$579 USD
Retailer 11$648 USD
Retailer 12$860 USD
Retailer 3$916 USD
Retailer 8$1,104 USD
Retailer 5$1,585 USD
Retailer 9$1,780 USD
Retailer 10$2,083 USD
Retailer 7$3,125 USD
Retailer 2$3,440 USD
Retailer 4$4,333 USD
Do Amore Diamonds$5,140 USD

21 data points across 12 retailers

11 retailers$579 USD to $5,140 USD

A
Cheapest Retailer
-
$579 USD
A
Retailer 2
-
$648 USD
View
A
Retailer 3
-
$860 USD
View
A
Retailer 4
-
$916 USD
View
A
Retailer 5
-
$1,104 USD
View
B+
Retailer 6
-
$1,585 USD
A$2,438 AUD
View
B+
Retailer 7
-
$1,780 USD
View
B+
Retailer 8
-
$2,083 USD
View
B
Retailer 9
-
$3,125 USD
£2,461 GBP
View
B
Retailer 10
-
$3,440 USD
View
Most Expensive
B
Do Amore Diamonds
27-DEDEF7089 · Nov 2
$5,140 USD
View
10 more retailers have this diamond
Prices start from $579 USDSave up to $4,561 USD

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
$579 USD