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Heart|Lab Grown|IGI

1.87ct E SI1 Heart Lab Grown Diamond

ID • E/SI1 • IGI LG523299046

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG523299046

Diamond specifications and retailer prices

From £295 GBP
$393 USD
As of October 30, 2026
Save £1,425 GBP (83%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £1,720 GBP at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

About this 1.87ct lab-grown heart diamond

This 1.87ct lab-grown heart sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG523299046 or 523299046. Listed at 9 retailers as of October 29, 2026, with prices from £295 to £1,720, a £1,425 spread on the same certified stone. Do Amore Diamonds lists it at £1,720. 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

1.87
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.3°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG523299046
Dimensions7.64 × 8.59 × 4.86 mm
L/W Ratio1.12
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
7.64 mm8.59 mm1.87 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG523299046
Side View
Table 57.5%Crown 34.3°Girdle: MED-VTKPavilion 41°Culet: NoneDepth 56.6%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £1,720 GBP|Low: £166 GBP|High: £1,720 GBP|Avg: £549 GBP|+3.2%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 29, 2026
Retailer 12£166 GBP
Retailer 11£295 GBP
Retailer 10£321 GBP
Retailer 5£323 GBP
Retailer 7£333 GBP
Retailer 9£401 GBP
Retailer 3£463 GBP
Retailer 4£549 GBP
Retailer 8£562 GBP
Retailer 6£738 GBP
Retailer 2£1,069 GBP
Do Amore Diamonds£1,720 GBP

13 data points across 12 retailers

9 retailers£295 GBP to £1,720 GBP

A
Cheapest Retailer
-
£295 GBP
$393 USD
B+
Retailer 2
-
£321 GBP
$428 USD
View
A
Retailer 3
-
£323 GBP
$430 USD
View
A
Retailer 4
-
£333 GBP
$443 USD
View
A
Retailer 5
-
£401 GBP
$534 USD
View
B+
Retailer 6
-
£562 GBP
$749 USD
View
B
Retailer 7
-
£738 GBP
$983 USD
View
B
Retailer 8
-
£1,069 GBP
View
Most Expensive
B
Do Amore Diamonds
27-65B728839 · Oct 29
£1,720 GBP
$2,290 USD
View
8 more retailers have this diamond
Prices start from £295 GBPSave up to £1,425 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
1.87ct Heart
£295 GBP