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Heart|Lab Grown|IGI

1.00ct F SI1 Heart Lab Grown Diamond

ID • F/SI1 • IGI LG805643885

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG805643885

Diamond specifications and retailer prices

From €183 EUR
HK$1,600 HKD
As of November 1, 2026
Save €326 EUR (64%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: €770 EUR 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 F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG805643885 or 805643885. Listed at 15 retailers as of November 1, 2026, with a 178% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
F
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle35.4°
Pavilion angle39.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG805643885
Dimensions6.86 × 6.49 × 3.96 mm
L/W Ratio1.06
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.86 mm6.49 mm1.00 ctF / SI1
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG805643885
Side View
Table 65.0%Crown 35.4°Girdle: MED-THKPavilion 39.6°Culet: NoneDepth 57.7%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 1
Current: €770 EUR|Low: €128 EUR|High: €794 EUR|Avg: €351 EUR|-2.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
November 2, 2026
Retailer 7€133 EUR
Retailer 6€149 EUR
Retailer 4€154 EUR
Retailer 3€165 EUR
Retailer 14€183 EUR
Retailer 8€273 EUR
Retailer 9€279 EUR
Retailer 12€284 EUR
Retailer 16€302 EUR
Retailer 13€353 EUR
Retailer 5€382 EUR
Retailer 2€421 EUR
Retailer 10€449 EUR
Retailer 11€508 EUR
Retailer 15€529 EUR
MOH London€770 EUR

41 data points across 16 retailers

15 retailers€183 EUR to €508 EUR

Retailer 1
-
€133 EUR
$149 USD
Price last confirmed 10 days ago
Retailer 2
-
€154 EUR
$173 USD
View
Price last confirmed 9 days ago
Retailer 3
-
€165 EUR
$185 USD
View
Price last confirmed 8 days ago
A
Retailer 4
-
€183 EUR
HK$1,600 HKD
View
A
Retailer 5
-
€273 EUR
$306 USD
View
A
Retailer 6
-
€279 EUR
View
A
Retailer 7
-
€284 EUR
£250 GBP
View
Retailer 8
-
€302 EUR
$339 USD
View
Price last confirmed 8 days ago
Retailer 9
-
€353 EUR
£312 GBP
View
Price last confirmed 7 days ago
Retailer 10
-
€382 EUR
$428 USD
View
Price last confirmed 7 days ago
B+
Retailer 11
-
€421 EUR
$472 USD
View
B+
Retailer 12
-
€449 EUR
SGD 681 SGD
View
B+
Retailer 13
-
€508 EUR
$570 USD
View
Retailer 14
-
€529 EUR
$593 USD
View
Price last confirmed 8 days ago
Most Expensive
MOH London
LG805643885 · Oct 26
€770 EUR
£680 GBP
View
Price last confirmed 7 days ago
14 more retailers have this diamond
Prices start from €183 EURSave up to €326 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.

A
1.00ct Heart
€183 EUR