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Heart|Lab Grown|IGI

1.51ct E IF Heart Lab Grown Diamond

ID • E/IF • IGI LG835608021

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG835608021

Diamond specifications and retailer prices

From $554 NZD
$312 USD
As of October 30, 2026
Save $4,734 NZD (90%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $5,287 NZD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.51ct lab-grown heart diamond

This 1.51ct lab-grown heart sits in the one-and-a-half to two carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG835608021 or 835608021. Listed at 21 retailers as of October 30, 2026, with prices from $554 to $5,287, a $4,734 spread on the same certified stone. Brilliant Earth lists it at $5,287. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.3°
Pavilion angle37.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG835608021
Dimensions6.66 × 7.89 × 4.72 mm
L/W Ratio1.18
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
6.66 mm7.89 mm1.51 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG835608021
Side View
Table 57.0%Crown 38.3°Girdle: STK-THKPavilion 37.8°Culet: NoneDepth 59.8%

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: Oct 30
Current: $5,287 NZD|Low: $536 NZD|High: $5,287 NZD|Avg: $1,811 NZD|+0.3%
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 3$554 NZD
Retailer 11$681 NZD
Retailer 8$685 NZD
Retailer 13$706 NZD
Retailer 5$759 NZD
Retailer 15$1,029 NZD
Retailer 4$1,114 NZD
Retailer 12$1,182 NZD
Retailer 2$1,221 NZD
Retailer 19$1,277 NZD
Retailer 9$1,588 NZD
Retailer 17$1,723 NZD
Retailer 18$1,812 NZD
Retailer 7$2,286 NZD
Retailer 14$2,635 NZD
Retailer 10$2,736 NZD
Retailer 6$2,750 NZD
Retailer 16$4,148 NZD
Brilliant Earth$5,287 NZD

27 data points across 19 retailers

21 retailers$554 NZD to $5,287 NZD

A
Cheapest Retailer
-
$554 NZD
$312 USD
Retailer 2
-
$669 NZD
$377 USD
View
Price last confirmed 34 days ago
Retailer 3
-
$681 NZD
$384 USD
View
Price last confirmed 8 days ago
A
Retailer 4
-
$685 NZD
$386 USD
View
A
Retailer 5
-
$706 NZD
£313 GBP
View
A
Retailer 6
-
$759 NZD
$428 USD
View
Final sale: no returns
A
Retailer 7
-
$1,029 NZD
$580 USD
View
A
Retailer 8
-
$1,114 NZD
$628 USD
View
A
Retailer 9
-
$1,182 NZD
ZAR 10,765 ZAR
View
A
Retailer 10
-
$1,221 NZD
£542 GBP
View
A
Retailer 11
-
$1,277 NZD
$720 USD
View
A
Retailer 12
-
$1,588 NZD
A$1,377 AUD
View
A
Retailer 13
-
$1,723 NZD
$971 USD
View
A
Retailer 14
-
$1,812 NZD
$1,021 USD
View
Retailer 15
-
$2,244 NZD
$1,265 USD
View
Price last confirmed 32 days ago
B+
Retailer 16
-
$2,286 NZD
$1,288 USD
View
B+
Retailer 17
-
$2,635 NZD
$1,485 USD
View
B+
Retailer 18
-
$2,736 NZD
£1,214 GBP
View
B+
Retailer 19
-
$2,750 NZD
$1,550 USD
View
B
Retailer 20
-
$4,148 NZD
A$3,597 AUD
View
Most Expensive
B
Brilliant Earth
21696528A · Oct 31
$5,287 NZD
$2,980 USD
View
20 more retailers have this diamond
Prices start from $554 NZDSave up to $4,734 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
1.51ct Heart
$554 NZD