Heart|Lab Grown|IGI

1.55ct D IF Heart Lab Grown Diamond

ID • D/IF • IGI LG818653714

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG818653714

Diamond specifications and retailer prices

From $306 USD
As of October 30, 2026
Save $2,524 USD (89%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $2,830 USD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

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 LG818653714 or 818653714. Listed at 19 retailers as of October 30, 2026, with prices from $306 to $2,830, a $2,524 spread on the same certified stone. Brilliant Earth lists it at $2,830. 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 angle36.9°
Pavilion angle39.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818653714
Dimensions7.02 × 7.81 × 4.73 mm
L/W Ratio1.11
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
7.02 mm7.81 mm1.55 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818653714
Side View
Table 60.0%Crown 36.9°Girdle: STK-VTKPavilion 39.3°Culet: NoneDepth 60.6%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: $2,830 USD|Low: $306 USD|High: $3,240 USD|Avg: $988 USD|-12.7%
Brilliant Earth
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
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
November 1, 2026
Retailer 6$306 USD
Retailer 4$343 USD
Retailer 3$380 USD
Retailer 10$380 USD
Retailer 2$402 USD
Retailer 16$535 USD
Retailer 8$619 USD
Retailer 15$653 USD
Retailer 12$676 USD
Retailer 14$886 USD
Retailer 17$984 USD
Retailer 5$1,059 USD
Retailer 11$1,222 USD
Retailer 19$1,249 USD
Retailer 9$1,262 USD
Retailer 7$1,268 USD
Retailer 18$1,344 USD
Retailer 13$1,530 USD
Brilliant Earth$2,830 USD

31 data points across 19 retailers

19 retailers$306 USD to $2,830 USD

A
Cheapest Retailer
-
$306 USD
A
Retailer 2
-
$343 USD
View
Final sale: no returns
A
Retailer 3
-
$380 USD
View
A
Retailer 4
-
$380 USD
View
Price last confirmed 7 days ago
A
Retailer 5
-
$402 USD
£316 GBP
View
A
Retailer 6
-
$535 USD
View
A
Retailer 7
-
$619 USD
View
A
Retailer 8
-
$653 USD
ZAR 10,548 ZAR
View
A
Retailer 9
-
$676 USD
£532 GBP
View
A
Retailer 10
-
$886 USD
A$1,363 AUD
View
A
Retailer 11
-
$984 USD
View
A
Retailer 12
-
$1,059 USD
View
B+
Retailer 13
-
$1,222 USD
View
B+
Retailer 14
-
$1,249 USD
View
B+
Retailer 15
-
$1,262 USD
SGD 1,705 SGD
View
B+
Retailer 16
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$1,268 USD
View
B+
Retailer 17
-
$1,344 USD
View
B+
Retailer 18
-
$1,530 USD
£1,205 GBP
View
Most Expensive
B
Brilliant Earth
21603033A · Oct 31
$2,830 USD
View
18 more retailers have this diamond
Prices start from $306 USDSave up to $2,524 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
$306 USD