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Heart|Lab Grown|IGI

1.28ct D FL Heart Lab Grown Diamond

VG • D/FL • IGI LG836619541

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG836619541

Diamond specifications and retailer prices

From $633 NZD
As of November 4, 2026
Save $4,121 NZD (87%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $4,754 NZD at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

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 D colour (colourless) and FL clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG836619541 or 836619541. Listed at 19 retailers as of November 4, 2026, with prices from $633 to $4,754, a $4,121 spread on the same certified stone. Brilliant Earth lists it at $4,754. 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

1.28
Carat
D
Colour
FL
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.4°
Pavilion angle37.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG836619541
Dimensions6.70 × 7.48 × 4.29 mm
L/W Ratio1.12
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
6.70 mm7.48 mm1.28 ctD / FL
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG836619541
Side View
Table 58.0%Crown 38.4°Girdle: STK-THKPavilion 37.6°Culet: NoneDepth 57.4%

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: Nov 4
Current: $4,754 NZD|Low: $633 NZD|High: $5,961 NZD|Avg: $1,824 NZD|-20.2%
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 5, 2026
Retailer 9$633 NZD
Retailer 3$734 NZD
Retailer 5$752 NZD
Retailer 17$784 NZD
Retailer 19$784 NZD
Retailer 13$805 NZD
Retailer 14$1,056 NZD
Retailer 7$1,221 NZD
Retailer 10$1,256 NZD
Retailer 16$1,354 NZD
Retailer 2$1,400 NZD
Retailer 4$1,570 NZD
Retailer 15$1,978 NZD
Retailer 18$2,523 NZD
Retailer 8$2,595 NZD
Retailer 11$2,837 NZD
Retailer 12$3,058 NZD
Retailer 6$3,268 NZD
Brilliant Earth$4,754 NZD

30 data points across 19 retailers

19 retailers$633 NZD to $4,754 NZD

A
Cheapest Retailer
-
$633 NZD
A
Retailer 2
-
$734 NZD
View
A
Retailer 3
-
$752 NZD
View
Final sale: no returns
A
Retailer 4
-
$784 NZD
View
Retailer 5
-
$784 NZD
View
Price last confirmed 11 days ago
A
Retailer 6
-
$805 NZD
View
A
Retailer 7
-
$1,056 NZD
View
A
Retailer 8
-
$1,221 NZD
View
A
Retailer 9
-
$1,256 NZD
View
A
Retailer 10
-
$1,354 NZD
View
B+
Retailer 11
-
$1,400 NZD
View
B+
Retailer 12
-
$1,570 NZD
View
B+
Retailer 13
-
$1,978 NZD
View
B
Retailer 14
-
$2,523 NZD
View
B
Retailer 15
-
$2,595 NZD
View
B
Retailer 16
-
$2,837 NZD
View
B
Retailer 17
-
$3,058 NZD
View
B
Retailer 18
-
$3,268 NZD
View
Most Expensive
B
Brilliant Earth
21695228A · Nov 4
$4,754 NZD
$2,680 USD
View
18 more retailers have this diamond
Prices start from $633 NZDSave up to $4,121 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
$633 NZD