Heart|Lab Grown|IGI

1.55ct D IF Heart Lab Grown Diamond

ID • D/IF • IGI LG837615555

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG837615555

Diamond specifications and retailer prices

From $735 NZD
$414 USD
As of November 1, 2026
Save $4,304 NZD (85%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $5,039 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 LG837615555 or 837615555. Listed at 19 retailers as of October 31, 2026, with prices from $735 to $5,039, a $4,304 spread on the same certified stone. Brilliant Earth lists it at $5,039. 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 angle37.2°
Pavilion angle38.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG837615555
Dimensions7.41 × 7.92 × 4.58 mm
L/W Ratio1.07
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
7.41 mm7.92 mm1.55 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG837615555
Side View
Table 59.0%Crown 37.2°Girdle: MED-STKPavilion 38.3°Culet: NoneDepth 57.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $5,039 NZD|Low: $660 NZD|High: $5,039 NZD|Avg: $1,547 NZD
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$660 NZD
Retailer 4$735 NZD
Retailer 11$752 NZD
Retailer 9$818 NZD
Retailer 10$830 NZD
Retailer 2$863 NZD
Retailer 3$886 NZD
Retailer 18$1,091 NZD
Retailer 16$1,100 NZD
Retailer 15$1,291 NZD
Retailer 12$1,408 NZD
Retailer 13$1,475 NZD
Retailer 19$1,895 NZD
Retailer 17$2,395 NZD
Retailer 5$2,589 NZD
Retailer 7$2,631 NZD
Retailer 8$2,853 NZD
Retailer 14$3,191 NZD
Brilliant Earth$5,039 NZD

23 data points across 19 retailers

19 retailers$735 NZD to $5,039 NZD

Retailer 1
-
$660 NZD
$372 USD
Price last confirmed 16 days ago
A
Retailer 2
-
$735 NZD
$414 USD
View
Final sale: no returns
Retailer 3
-
$752 NZD
$424 USD
View
Price last confirmed 18 days ago
Retailer 4
-
$818 NZD
$461 USD
View
Price last confirmed 17 days ago
Retailer 5
-
$830 NZD
$468 USD
View
Price last confirmed 18 days ago
A
Retailer 6
-
$863 NZD
£383 GBP
View
A
Retailer 7
-
$886 NZD
HK$3,900 HKD
View
A
Retailer 8
-
$1,091 NZD
$615 USD
View
A
Retailer 9
-
$1,100 NZD
$620 USD
View
A
Retailer 10
-
$1,291 NZD
€693 EUR
View
A
Retailer 11
-
$1,408 NZD
ZAR 12,821 ZAR
View
A
Retailer 12
-
$1,475 NZD
£654 GBP
View
A
Retailer 13
-
$1,895 NZD
A$1,643 AUD
View
B+
Retailer 14
-
$2,395 NZD
$1,350 USD
View
B+
Retailer 15
-
$2,589 NZD
SGD 1,972 SGD
View
Retailer 16
-
$2,631 NZD
$1,483 USD
View
Price last confirmed 16 days ago
B+
Retailer 17
-
$2,853 NZD
$1,608 USD
View
B+
Retailer 18
-
$3,191 NZD
£1,416 GBP
View
Most Expensive
B
Brilliant Earth
21573871A · Oct 31
$5,039 NZD
$2,840 USD
View
18 more retailers have this diamond
Prices start from $735 NZDSave up to $4,304 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
$735 NZD