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Heart|Lab Grown|IGI

1.00ct D SI1 Heart Lab Grown Diamond

ID • D/SI1 • IGI LG850681377

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG850681377

Diamond specifications and retailer prices

From $544 NZD
£241 GBP
As of November 1, 2026
Save $943 NZD (63%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $1,487 NZD at MOH London · As of November 1, 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 LG850681377 or 850681377. Listed at 7 retailers as of November 1, 2026, with prices from $544 to $1,487, a $943 spread on the same certified stone. MOH London lists it at $1,487. 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.3°
Pavilion angle39.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG850681377
Dimensions6.80 × 5.97 × 4.03 mm
L/W Ratio1.14
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.80 mm5.97 mm1.00 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG850681377
Side View
Table 63.0%Crown 37.3°Girdle: MED-STKPavilion 39.1°Culet: NoneDepth 59.3%

Caratlytics Score

How it works →
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 1
Current: $1,487 NZD|Low: $531 NZD|High: $1,489 NZD|Avg: $786 NZD|-0.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 1, 2026
Retailer 2$544 NZD
Retailer 3$548 NZD
Retailer 5$557 NZD
Retailer 7$591 NZD
Retailer 4$605 NZD
Retailer 6$1,122 NZD
MOH London$1,487 NZD

8 data points across 7 retailers

7 retailers$544 NZD to $1,487 NZD

A
Cheapest Retailer
-
$544 NZD
£241 GBP
A
Retailer 2
-
$548 NZD
€294 EUR
View
A
Retailer 3
-
$557 NZD
$314 USD
View
B+
Retailer 4
-
$591 NZD
$333 USD
View
B+
Retailer 5
-
$605 NZD
£268 GBP
View
B
Retailer 6
-
$1,122 NZD
$632 USD
View
Most Expensive
B
MOH London
LG850681377 · Nov 1
$1,487 NZD
£660 GBP
View
6 more retailers have this diamond
Prices start from $544 NZDSave up to $943 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
$544 NZD