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Heart|Lab Grown|IGI

1.21ct D IF Heart Lab Grown Diamond

VG • D/IF • IGI LG836619501

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG836619501

Diamond specifications and retailer prices

From $438 NZD
As of November 4, 2026
Save $3,092 NZD (88%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $3,530 NZD at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

About this 1.21ct lab-grown heart diamond

This 1.21ct lab-grown heart sits in the classic one-carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG836619501 or 836619501. Listed at 20 retailers as of November 4, 2026, with prices from $438 to $3,530, a $3,092 spread on the same certified stone. Brilliant Earth lists it at $3,530. 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

1.21
Carat
D
Colour
IF
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.9°
Pavilion angle37.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG836619501
Dimensions6.64 × 7.31 × 4.24 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
6.64 mm7.31 mm1.21 ctD / IF
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG836619501
Side View
Table 54.0%Crown 34.9°Girdle: STK-THKPavilion 37.7°Culet: NoneDepth 58.0%

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: $3,530 NZD|Low: $438 NZD|High: $3,530 NZD|Avg: $1,257 NZD
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
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Retailer 11
Retailer 12
Retailer 13
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Retailer 15
Retailer 16
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Retailer 19
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Retailer 21
November 5, 2026
Retailer 8$438 NZD
Retailer 4$491 NZD
Retailer 20$509 NZD
Retailer 7$545 NZD
Retailer 11$545 NZD
Retailer 15$557 NZD
Retailer 14$860 NZD
Retailer 6$914 NZD
Retailer 19$931 NZD
Retailer 18$938 NZD
Retailer 5$965 NZD
Retailer 2$1,022 NZD
Retailer 16$1,331 NZD
Retailer 9$1,362 NZD
Retailer 17$1,384 NZD
Retailer 12$1,747 NZD
Retailer 3$1,815 NZD
Retailer 10$1,840 NZD
Retailer 21$1,980 NZD
Retailer 13$2,173 NZD
Brilliant Earth$3,530 NZD

31 data points across 21 retailers

20 retailers$438 NZD to $3,530 NZD

A
Cheapest Retailer
-
$438 NZD
A
Retailer 2
-
$491 NZD
View
Final sale: no returns
A
Retailer 3
-
$509 NZD
View
A
Retailer 4
-
$545 NZD
View
Retailer 5
-
$545 NZD
View
Price last confirmed 11 days ago
A
Retailer 6
-
$557 NZD
View
A
Retailer 7
-
$914 NZD
View
A
Retailer 8
-
$931 NZD
View
A
Retailer 9
-
$938 NZD
View
A
Retailer 10
-
$965 NZD
View
A
Retailer 11
-
$1,022 NZD
View
B+
Retailer 12
-
$1,331 NZD
View
B+
Retailer 13
-
$1,362 NZD
View
B+
Retailer 14
-
$1,384 NZD
View
B+
Retailer 15
-
$1,747 NZD
View
B+
Retailer 16
-
$1,815 NZD
View
B+
Retailer 17
-
$1,840 NZD
View
B+
Retailer 18
-
$1,980 NZD
View
B
Retailer 19
-
$2,173 NZD
View
Most Expensive
B
Brilliant Earth
21695593A · Nov 4
$3,530 NZD
$1,990 USD
View
19 more retailers have this diamond
Prices start from $438 NZDSave up to $3,092 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
1.21ct Heart
$438 NZD