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Heart|Lab Grown|IGI

0.51ct D IF Heart Lab Grown Diamond

ID • D/IF • IGI LG818658796

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG818658796

Diamond specifications and retailer prices

From $383 NZD
As of November 5, 2026
Save $1,696 NZD (82%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $2,079 NZD at Reve Diamonds · As of November 4, 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 D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG818658796 or 818658796. Listed at 18 retailers as of November 4, 2026, with prices from $383 to $2,079, a $1,696 spread on the same certified stone. Reve Diamonds lists it at $2,079. Flawless clarity in sub-one-carat stones is rarely visible to the naked eye over VS1, so you are paying a meaningful premium for grade rather than appearance.

The 4Cs

0.51
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.3°
Pavilion angle37°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818658796
Dimensions5.54 × 5.07 × 3.12 mm
L/W Ratio1.09
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
5.54 mm5.07 mm0.51 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818658796
Side View
Table 63.0%Crown 39.3°Girdle: STK-THKPavilion 37°Culet: NoneDepth 56.3%

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 5
Current: $766 NZD|Low: $383 NZD|High: $2,079 NZD|Avg: $1,010 NZD|+3.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Reve Diamonds
November 5, 2026
Retailer 3$383 NZD
Retailer 12$426 NZD
Retailer 11$600 NZD
Retailer 10$633 NZD
Retailer 8$722 NZD
Retailer 1$766 NZD
Retailer 7$772 NZD
Retailer 2$898 NZD
Retailer 6$1,082 NZD
Retailer 9$1,371 NZD
Retailer 4$1,460 NZD
Retailer 5$1,980 NZD
Reve Diamonds$2,079 NZD

35 data points across 13 retailers

18 retailers$383 NZD to $2,079 NZD

Retailer 1
-
$342 NZD
Price last confirmed 28 days ago
A
Retailer 2
-
$383 NZD
View
Final sale: no returns
Retailer 3
-
$397 NZD
View
Price last confirmed 37 days ago
Retailer 4
-
$419 NZD
View
Price last confirmed 41 days ago
Retailer 5
-
$426 NZD
View
Price last confirmed 33 days ago
Retailer 6
-
$426 NZD
View
Price last confirmed 24 days ago
A
Retailer 7
-
$600 NZD
View
A
Retailer 8
-
$633 NZD
View
B+
Retailer 9
-
$722 NZD
View
B+
Retailer 10
-
$766 NZD
View
B+
Retailer 11
-
$772 NZD
View
B+
Retailer 12
-
$898 NZD
View
B+
Retailer 13
-
$1,082 NZD
View
Retailer 14
-
$1,366 NZD
View
Price last confirmed 36 days ago
B
Retailer 15
-
$1,371 NZD
View
B
Retailer 16
-
$1,460 NZD
View
B
Retailer 17
-
$1,980 NZD
View
Most Expensive
B
Reve Diamonds
AECDB604D · Nov 4
$2,079 NZD
$1,172 USD
View
17 more retailers have this diamond
Prices start from $383 NZDSave up to $1,696 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
$383 NZD