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Heart|Lab Grown|IGI

0.99ct E SI1 Heart Lab Grown Diamond

ID • E/SI1 • IGI LG819640684

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG819640684

Diamond specifications and retailer prices

From $248 USD
As of October 28, 2026
Save $612 USD (71%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $860 USD at MOH London · As of October 29, 2026
View at MOH London

About this 0.99ct lab-grown heart diamond

This 0.99ct lab-grown heart sits in the just-under-one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG819640684 or 819640684. Listed at 6 retailers as of October 28, 2026, with prices from $248 to $860, a $612 spread on the same certified stone. MOH London lists it at $860. 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

0.99
Carat
E
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle39.8°
Pavilion angle40°
OriginLab Grown
Grading LabIGI
CertificateIGI LG819640684
Dimensions6.35 × 6.22 × 3.97 mm
L/W Ratio1.02
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.35 mm6.22 mm0.99 ctE / SI1
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG819640684
Side View
Table 60.0%Crown 39.8°Girdle: THK-VTKPavilion 40°Culet: NoneDepth 62.5%

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: Oct 28
Current: $860 USD|Low: $235 USD|High: $860 USD|Avg: $426 USD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 29, 2026
Retailer 5$248 USD
Retailer 4$254 USD
Retailer 3$315 USD
Retailer 2$348 USD
Retailer 6$644 USD
MOH London$860 USD

14 data points across 6 retailers

6 retailers$248 USD to $860 USD

B+
Cheapest Retailer
-
$248 USD
A
Retailer 2
-
$254 USD
View
B+
Retailer 3
-
$315 USD
£248 GBP
View
B+
Retailer 4
-
$348 USD
£274 GBP
View
B
Retailer 5
-
$644 USD
View
Most Expensive
B
MOH London
LG819640684 · Oct 29
$860 USD
£677 GBP
View
5 more retailers have this diamond
Prices start from $248 USDSave up to $612 USD

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
0.99ct Heart
$248 USD