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Heart|Lab Grown|GCAL

1.00ct D SI1 Heart Lab Grown Diamond

VG • D/SI1 • GCAL 340810524

Shape and cutting style on the report: Heart brilliant

Certificate GCAL 340810524

Diamond specifications and retailer prices

From £161 GBP
$216 USD
As of October 30, 2026
Save £722 GBP (82%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £883 GBP at MOH London · As of October 25, 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 very-good cut grade and certified by GCAL 340810524. Listed at 7 retailers as of October 25, 2026, with prices from £161 to £883, a £722 spread on the same certified stone. MOH London lists it at £883. 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
D
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishGood
SymmetryGood
FluorescenceNone
Crown angle35.5°
Pavilion angle40.4°
OriginLab Grown
Grading LabGCAL
CertificateGCAL 340810524
Dimensions7.04 × 6.09 × 3.92 mm
L/W Ratio1.16
Culet sizeNone
Top View
7.04 mm6.09 mm1.00 ctD / SI1
OriginLab Grown
CutVery Good
PolishGood
SymmetryGood
FluorescenceNone
CertificateGCAL 340810524
Side View
Table 57.0%Crown 35.5°GirdlePavilion 40.4°Culet: NoneDepth 55.7%

Caratlytics Score

How it works →
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: £883 GBP|Low: £154 GBP|High: £893 GBP|Avg: £431 GBP|+0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 25, 2026
Retailer 3£161 GBP
Retailer 6£187 GBP
Retailer 7£210 GBP
Retailer 5£341 GBP
Retailer 8£358 GBP
Retailer 2£643 GBP
Retailer 4£708 GBP
MOH London£883 GBP

11 data points across 8 retailers

7 retailers£161 GBP to £883 GBP

A
Cheapest Retailer
-
£161 GBP
$216 USD
B+
Retailer 2
-
£187 GBP
$250 USD
View
B+
Retailer 3
-
£210 GBP
$282 USD
View
B
Retailer 4
-
£341 GBP
$457 USD
View
C
Retailer 5
-
£643 GBP
$862 USD
View
C
Retailer 6
-
£708 GBP
$948 USD
View
Most Expensive
C
MOH London
340810524 · Oct 25
£883 GBP
View
6 more retailers have this diamond
Prices start from £161 GBPSave up to £722 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
£161 GBP