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Heart|Lab Grown|IGI

1.28ct E VS1 Heart Lab Grown Diamond

ID • E/VS1 • IGI LG591310915

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG591310915

Diamond specifications and retailer prices

From $334 NZD
$188 USD
As of October 30, 2026
Save $3,294 NZD (91%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $3,628 NZD at Queensmith · As of October 27, 2026
View at Queensmith

About this 1.28ct lab-grown heart diamond

This 1.28ct lab-grown heart sits in the one-and-a-quarter to one-and-a-half carat band, graded E colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG591310915 or 591310915. Listed at 20 retailers as of October 27, 2026, with prices from $334 to $3,628, a $3,294 spread on the same certified stone. Queensmith lists it at $3,628. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.28
Carat
E
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.3°
Pavilion angle39.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG591310915
Dimensions7.14 × 7.46 × 4.11 mm
L/W Ratio1.04
Girdle conditionFaceted
Culet sizePointed
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
7.14 mm7.46 mm1.28 ctE / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG591310915
Side View
Table 64.0%Crown 38.3°Girdle: MED-STKPavilion 39.2°Culet: NoneDepth 55.1%

Caratlytics Score

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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: $753 NZD|Low: $334 NZD|High: $1,958 NZD|Avg: $885 NZD|-10.2%
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
Retailer 14
Retailer 15
Retailer 16
Retailer 17
October 31, 2026
Retailer 8$334 NZD
Retailer 6$373 NZD
Retailer 5$389 NZD
Retailer 2$415 NZD
Retailer 4$415 NZD
Retailer 11$521 NZD
Retailer 12$704 NZD
Retailer 13$712 NZD
Retailer 7$729 NZD
Retailer 1$753 NZD
Retailer 3$846 NZD
Retailer 14$1,011 NZD
Retailer 10$1,331 NZD
Retailer 17$1,332 NZD
Retailer 16$1,338 NZD
Retailer 9$1,428 NZD
Retailer 15$1,940 NZD

35 data points across 17 retailers

20 retailers$334 NZD to $3,628 NZD

A
Cheapest Retailer
-
$334 NZD
$188 USD
A
Retailer 2
-
$373 NZD
$210 USD
View
Final sale: no returns
A
Retailer 3
-
$389 NZD
$219 USD
View
A
Retailer 4
-
$415 NZD
$234 USD
View
A
Retailer 5
-
$415 NZD
$234 USD
View
Retailer 6
-
$460 NZD
$259 USD
View
Price last confirmed 36 days ago
A
Retailer 7
-
$521 NZD
£231 GBP
View
A
Retailer 8
-
$704 NZD
€378 EUR
View
A
Retailer 9
-
$712 NZD
ZAR 6,481 ZAR
View
A
Retailer 10
-
$729 NZD
$411 USD
View
A
Retailer 11
-
$753 NZD
£334 GBP
View
B+
Retailer 12
-
$846 NZD
$477 USD
View
B+
Retailer 13
-
$1,011 NZD
A$877 AUD
View
B+
Retailer 14
-
$1,052 NZD
$593 USD
View
B+
Retailer 15
-
$1,331 NZD
$750 USD
View
B+
Retailer 16
-
$1,332 NZD
$751 USD
View
Retailer 17
-
$1,338 NZD
$754 USD
View
Price last confirmed 11 days ago
B
Retailer 18
-
$1,428 NZD
$805 USD
View
B
Retailer 19
-
$1,940 NZD
£861 GBP
View
Most Expensive
B
Queensmith
LG591310915 · Oct 27
$3,628 NZD
£1,610 GBP
View
19 more retailers have this diamond
Prices start from $334 NZDSave up to $3,294 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
1.28ct Heart
$334 NZD