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Heart|Lab Grown|IGI

0.51ct E IF Heart Lab Grown Diamond

VG • E/IF • IGI LG840620855

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG840620855

Diamond specifications and retailer prices

From $323 NZD
$182 USD
As of October 30, 2026
Save $1,694 NZD (84%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $2,017 NZD at Reve Diamonds · As of October 30, 2026
View at Reve Diamonds

About this 0.51ct lab-grown heart diamond

This 0.51ct lab-grown heart sits in the half to three-quarter carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG840620855 or 840620855. Listed at 14 retailers as of October 30, 2026, with prices from $323 to $2,017, a $1,694 spread on the same certified stone. Reve Diamonds lists it at $2,017. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.51
Carat
E
Colour
IF
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.9°
Pavilion angle38.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG840620855
Dimensions5.05 × 5.54 × 3.11 mm
L/W Ratio1.10
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
5.05 mm5.54 mm0.51 ctE / IF
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG840620855
Side View
Table 61.0%Crown 35.9°Girdle: THN-STKPavilion 38.7°Culet: NoneDepth 56.1%

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: Oct 30
Current: $687 NZD|Low: $323 NZD|High: $2,017 NZD|Avg: $860 NZD|+0.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Reve Diamonds
October 31, 2026
Retailer 3$323 NZD
Retailer 10$360 NZD
Retailer 12$374 NZD
Retailer 11$564 NZD
Retailer 2$614 NZD
Retailer 1$687 NZD
Retailer 6$717 NZD
Retailer 13$724 NZD
Retailer 4$839 NZD
Retailer 8$887 NZD
Retailer 7$1,361 NZD
Retailer 5$1,385 NZD
Retailer 9$1,884 NZD
Reve Diamonds$2,017 NZD

6 data points across 14 retailers

14 retailers$323 NZD to $2,017 NZD

A
Cheapest Retailer
-
$323 NZD
$182 USD
A
Retailer 2
-
$360 NZD
$203 USD
View
Final sale: no returns
A
Retailer 3
-
$374 NZD
$211 USD
View
A
Retailer 4
-
$564 NZD
$318 USD
View
B+
Retailer 5
-
$614 NZD
$346 USD
View
B+
Retailer 6
-
$687 NZD
€369 EUR
View
B+
Retailer 7
-
$717 NZD
£318 GBP
View
B+
Retailer 8
-
$724 NZD
ZAR 6,596 ZAR
View
B+
Retailer 9
-
$839 NZD
$473 USD
View
B+
Retailer 10
-
$887 NZD
$500 USD
View
B
Retailer 11
-
$1,361 NZD
$767 USD
View
B
Retailer 12
-
$1,385 NZD
$780 USD
View
B
Retailer 13
-
$1,884 NZD
£836 GBP
View
Most Expensive
B
Reve Diamonds
D83AA3E1D · Oct 30
$2,017 NZD
$1,137 USD
View
13 more retailers have this diamond
Prices start from $323 NZDSave up to $1,694 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
0.51ct Heart
$323 NZD