Heart|Lab Grown|IGI

1.56ct I SI1 Heart Lab Grown Diamond

ID • I/SI1 • IGI LG395946707

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG395946707

Diamond specifications and retailer prices

From €349 EUR
$390 USD
As of November 1, 2026
Save €746 EUR (68%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: €1,095 EUR at The Diamond Guys · As of November 1, 2026
View at The Diamond Guys

About this 1.56ct lab-grown heart diamond

This 1.56ct lab-grown heart sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG395946707 or 395946707. Listed at 3 retailers as of November 1, 2026, with prices from €349 to €1,095, a €746 spread on the same certified stone. The Diamond Guys lists it at €1,095. 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

1.56
Carat
I
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginLab Grown
Grading LabIGI
CertificateIGI LG395946707
Dimensions7.09 × 8.17 × 4.81 mm
L/W Ratio1.15
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory grown diamond was created by chemical vapor deposition process (CVD) Type IIa
Top View
7.09 mm8.17 mm1.56 ctI / SI1
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG395946707
Side View
Table 62.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 1
Current: €349 EUR|Low: €319 EUR|High: €3,407 EUR|Avg: €1,649 EUR|-64.3%
Retailer 1
Retailer 2
The Diamond Guys
September 13, 2026
Retailer 1€349 EUR
Retailer 2€827 EUR
The Diamond Guys€1,095 EUR

29 data points across 3 retailers

3 retailers€349 EUR to €1,095 EUR

B+
Cheapest Retailer
-
€349 EUR
$390 USD
B+
Retailer 2
-
€827 EUR
CA$1,284 CAD
View
Most Expensive
B+
The Diamond Guys
1779253543 · Nov 1
€1,095 EUR
$1,223 USD
View
2 more retailers have this diamond
Prices start from €349 EURSave up to €746 EUR

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.

B+
1.56ct Heart
€349 EUR