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Heart|Lab Grown|IGI

1.00ct D SI1 Heart Lab Grown Diamond

ID • D/SI1 • IGI LG662486072

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG662486072

Diamond specifications and retailer prices

From £119 GBP
$160 USD
As of October 30, 2026
Save £576 GBP (83%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £696 GBP at MOH London · As of October 29, 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 LG662486072 or 662486072. Listed at 14 retailers as of October 29, 2026, with prices from £119 to £696, a £576 spread on the same certified stone. MOH London lists it at £696. 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
SymmetryVery Good
FluorescenceNone
Crown angle35.8°
Pavilion angle41.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG662486072
Dimensions5.51 × 7.00 × 4.33 mm
L/W Ratio1.27
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
5.51 mm7.00 mm1.00 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG662486072
Side View
Table 57.0%Crown 35.8°Girdle: STK-THKPavilion 41.5°Culet: NoneDepth 61.9%

Caratlytics Score

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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: Oct 30
Current: £696 GBP|Low: £115 GBP|High: £700 GBP|Avg: £305 GBP|+0.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 31, 2026
Retailer 10£119 GBP
Retailer 7£139 GBP
Retailer 9£148 GBP
Retailer 11£148 GBP
Retailer 5£178 GBP
Retailer 2£259 GBP
Retailer 3£268 GBP
Retailer 6£281 GBP
Retailer 4£328 GBP
Retailer 8£470 GBP
Retailer 12£476 GBP
MOH London£696 GBP

43 data points across 12 retailers

14 retailers£119 GBP to £696 GBP

A
Cheapest Retailer
-
£119 GBP
$160 USD
A
Retailer 2
-
£139 GBP
$186 USD
View
A
Retailer 3
-
£148 GBP
$198 USD
View
Retailer 4
-
£148 GBP
$198 USD
View
Price last confirmed 7 days ago
A
Retailer 5
-
£178 GBP
View
B+
Retailer 6
-
£239 GBP
$320 USD
View
B+
Retailer 7
-
£259 GBP
View
B+
Retailer 8
-
£268 GBP
$359 USD
View
B+
Retailer 9
-
£281 GBP
View
B+
Retailer 10
-
£328 GBP
$440 USD
View
B
Retailer 11
-
£404 GBP
View
Retailer 12
-
£470 GBP
$630 USD
View
Price last confirmed 14 days ago
B
Retailer 13
-
£476 GBP
$638 USD
View
Most Expensive
B
MOH London
LG662486072 · Oct 29
£696 GBP
View
13 more retailers have this diamond
Prices start from £119 GBPSave up to £576 GBP

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
£119 GBP