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Heart|Lab Grown|IGI

1.00ct E SI1 Heart Lab Grown Diamond

VG • E/SI1 • IGI LG837635380

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG837635380

Diamond specifications and retailer prices

From £125 GBP
$166 USD
As of October 28, 2026
Save £123 GBP (50%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £248 GBP at 77 Diamonds · As of October 29, 2026
View at 77 Diamonds

About this 1ct lab-grown heart diamond

This 1ct lab-grown heart sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG837635380 or 837635380. Listed at 2 retailers as of October 28, 2026, with prices from £125 to £248, a £123 spread on the same certified stone. 77 Diamonds lists it at £248. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.00
Carat
E
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.7°
Pavilion angle37.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG837635380
Dimensions6.29 × 7.06 × 3.93 mm
L/W Ratio1.12
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.29 mm7.06 mm1.00 ctE / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG837635380
Side View
Table 62.0%Crown 35.7°Girdle: MED-STKPavilion 37.9°Culet: NoneDepth 55.7%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 28
Current: £248 GBP|Low: £125 GBP|High: £282 GBP|Avg: £241 GBP|-10.5%
77 Diamonds
Retailer 2
October 29, 2026
Retailer 2£125 GBP
77 Diamonds£248 GBP

35 data points across 2 retailers

2 retailers£125 GBP to £248 GBP

A
Cheapest Retailer
-
£125 GBP
$166 USD
Final sale: no returns
Most Expensive
B+
77 Diamonds
HSTVSBJJET7U4 · Oct 29
£248 GBP
View
1 more retailer has this diamond
Prices start from £125 GBPSave up to £123 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
£125 GBP