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Heart|Lab Grown|IGI

0.78ct D SI1 Heart Lab Grown Diamond

ID • D/SI1 • IGI LG700587860

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG700587860

Diamond specifications and retailer prices

From £82 GBP
$110 USD
As of October 30, 2026
Save £765 GBP (90%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £847 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 0.78ct lab-grown heart diamond

This 0.78ct lab-grown heart sits in the just-under-one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG700587860 or 700587860. Listed at 12 retailers as of October 30, 2026, with prices from £82 to £847, a £765 spread on the same certified stone. MOH London lists it at £847. 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

0.78
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishVery Good
SymmetryExcellent
FluorescenceNone
Crown angle32.6°
Pavilion angle40°
OriginLab Grown
Grading LabIGI
CertificateIGI LG700587860
Dimensions5.91 × 6.29 × 3.62 mm
L/W Ratio1.06
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
5.91 mm6.29 mm0.78 ctD / SI1
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateIGI LG700587860
Side View
Table 64.0%Crown 32.6°Girdle: THN-STKPavilion 40°Culet: NoneDepth 57.6%

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: £847 GBP|Low: £82 GBP|High: £852 GBP|Avg: £284 GBP|-0.6%
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
November 1, 2026
Retailer 4£82 GBP
Retailer 15£95 GBP
Retailer 10£108 GBP
Retailer 3£124 GBP
Retailer 8£187 GBP
Retailer 2£201 GBP
Retailer 14£202 GBP
Retailer 13£221 GBP
Retailer 11£281 GBP
Retailer 7£313 GBP
Retailer 12£326 GBP
Retailer 9£363 GBP
Retailer 6£464 GBP
Retailer 5£530 GBP
MOH London£847 GBP

6 data points across 15 retailers

12 retailers£82 GBP to £847 GBP

A
Cheapest Retailer
-
£82 GBP
$110 USD
A
Retailer 2
-
£95 GBP
$127 USD
View
A
Retailer 3
-
£108 GBP
$145 USD
View
A
Retailer 4
-
£124 GBP
HK$1,300 HKD
View
B+
Retailer 5
-
£187 GBP
€239 EUR
View
B+
Retailer 6
-
£201 GBP
View
B+
Retailer 7
-
£202 GBP
$271 USD
View
B+
Retailer 8
-
£221 GBP
View
B+
Retailer 9
-
£281 GBP
$376 USD
View
B
Retailer 10
-
£326 GBP
$437 USD
View
B
Retailer 11
-
£363 GBP
$487 USD
View
Most Expensive
B
MOH London
LG700587860 · Nov 1
£847 GBP
View
11 more retailers have this diamond
Prices start from £82 GBPSave up to £765 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
0.78ct Heart
£82 GBP