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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 $544 NZD
$306 USD
As of October 30, 2026
Save $4,486 NZD (89%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $5,030 NZD 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 $544 to $5,030, a $4,486 spread on the same certified stone. Brilliant Earth lists it at $5,030. 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
Colour
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

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: $5,030 NZD|Low: $544 NZD|High: $5,758 NZD|Avg: $1,789 NZD|-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 2, 2026
Retailer 6$544 NZD
Retailer 4$610 NZD
Retailer 3$675 NZD
Retailer 10$675 NZD
Retailer 2$714 NZD
Retailer 16$951 NZD
Retailer 8$1,100 NZD
Retailer 13$1,165 NZD
Retailer 12$1,201 NZD
Retailer 15$1,575 NZD
Retailer 17$1,749 NZD
Retailer 5$1,882 NZD
Retailer 11$2,172 NZD
Retailer 19$2,220 NZD
Retailer 9$2,242 NZD
Retailer 7$2,254 NZD
Retailer 18$2,389 NZD
Retailer 14$2,720 NZD
Brilliant Earth$5,030 NZD

31 data points across 19 retailers

19 retailers$544 NZD to $5,030 NZD

A
Cheapest Retailer
-
$544 NZD
$306 USD
A
Retailer 2
-
$610 NZD
$343 USD
View
Final sale: no returns
A
Retailer 3
-
$675 NZD
$380 USD
View
Retailer 4
-
$675 NZD
$380 USD
View
Price last confirmed 8 days ago
A
Retailer 5
-
$714 NZD
£316 GBP
View
A
Retailer 6
-
$951 NZD
$535 USD
View
A
Retailer 7
-
$1,100 NZD
$619 USD
View
A
Retailer 8
-
$1,165 NZD
ZAR 10,585 ZAR
View
A
Retailer 9
-
$1,201 NZD
£532 GBP
View
A
Retailer 10
-
$1,575 NZD
A$1,363 AUD
View
A
Retailer 11
-
$1,749 NZD
$984 USD
View
A
Retailer 12
-
$1,882 NZD
$1,059 USD
View
B+
Retailer 13
-
$2,172 NZD
$1,222 USD
View
B+
Retailer 14
-
$2,220 NZD
$1,249 USD
View
B+
Retailer 15
-
$2,242 NZD
SGD 1,705 SGD
View
B+
Retailer 16
-
$2,254 NZD
$1,268 USD
View
B+
Retailer 17
-
$2,389 NZD
$1,344 USD
View
B+
Retailer 18
-
$2,720 NZD
£1,205 GBP
View
Most Expensive
B
Brilliant Earth
21603033A · Oct 31
$5,030 NZD
$2,830 USD
View
18 more retailers have this diamond
Prices start from $544 NZDSave up to $4,486 NZD

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
$544 NZD