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Heart|Lab Grown|IGI

1.00ct D SI1 Heart Lab Grown Diamond

EX • D/SI1 • IGI LG517287920

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG517287920

Diamond specifications and retailer prices

From $296 NZD
$167 USD
As of November 1, 2026
Save $1,236 NZD (81%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $1,532 NZD at MOH London · As of October 26, 2026
View at MOH London

About this 1ct lab-grown heart diamond

This 1ct lab-grown heart sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG517287920 or 517287920. Listed at 13 retailers as of October 26, 2026, with prices from $296 to $1,532, a $1,236 spread on the same certified stone. MOH London lists it at $1,532. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.00
Carat
D
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle39.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG517287920
Dimensions6.20 × 6.81 × 3.95 mm
L/W Ratio1.10
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
6.20 mm6.81 mm1.00 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG517287920
Side View
Table 59.5%Crown 34°Girdle: STK-THKPavilion 39.8°Culet: NoneDepth 58.0%

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 1
Current: $1,532 NZD|Low: $264 NZD|High: $1,548 NZD|Avg: $763 NZD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 5$264 NZD
Retailer 6$296 NZD
Retailer 3$444 NZD
Retailer 8$561 NZD
Retailer 2$563 NZD
Retailer 7$759 NZD
Retailer 4$1,112 NZD
Retailer 9$1,151 NZD
MOH London$1,532 NZD

41 data points across 9 retailers

13 retailers$296 NZD to $1,532 NZD

Retailer 1
-
$264 NZD
$149 USD
Price last confirmed 9 days ago
A
Retailer 2
-
$296 NZD
$167 USD
View
Final sale: no returns
Retailer 3
-
$307 NZD
$173 USD
View
Price last confirmed 8 days ago
A
Retailer 4
-
$328 NZD
$185 USD
View
Retailer 5
-
$328 NZD
$185 USD
View
Price last confirmed 7 days ago
B+
Retailer 6
-
$444 NZD
$250 USD
View
B+
Retailer 7
-
$561 NZD
$316 USD
View
B+
Retailer 8
-
$563 NZD
£250 GBP
View
B+
Retailer 9
-
$759 NZD
$428 USD
View
Retailer 10
-
$1,052 NZD
$593 USD
View
Price last confirmed 7 days ago
B
Retailer 11
-
$1,112 NZD
$627 USD
View
B
Retailer 12
-
$1,151 NZD
$649 USD
View
Most Expensive
B
MOH London
LG517287920 · Oct 26
$1,532 NZD
£680 GBP
View
12 more retailers have this diamond
Prices start from $296 NZDSave up to $1,236 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
1.00ct Heart
$296 NZD