CaratHunter
Plans
Heart|Lab Grown|IGI

1.34ct D IF Heart Lab Grown Diamond

VG • D/IF • IGI LG839698473

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG839698473

Diamond specifications and retailer prices

From £237 GBP
As of November 4, 2026
Save £1,593 GBP (87%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £1,830 GBP at Brilliant Earth · As of November 2, 2026
View at Brilliant Earth

About this 1.34ct lab-grown heart diamond

This 1.34ct lab-grown heart sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG839698473 or 839698473. Listed at 12 retailers as of November 2, 2026, with prices from £237 to £1,830, a £1,593 spread on the same certified stone. Brilliant Earth lists it at £1,830. 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

1.34
Carat
D
Colour
IF
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.6°
Pavilion angle37.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG839698473
Dimensions7.04 × 7.78 × 4.36 mm
L/W Ratio1.11
Girdle conditionFaceted
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
7.04 mm7.78 mm1.34 ctD / IF
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG839698473
Side View
Table 61.0%Crown 36.6°Girdle: MED-STKPavilion 37.9°CuletDepth 56.0%

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: Nov 4
Current: £1,830 GBP|Low: £237 GBP|High: £2,096 GBP|Avg: £583 GBP|-12.7%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 5, 2026
Retailer 3£237 GBP
Retailer 11£264 GBP
Retailer 10£293 GBP
Retailer 4£296 GBP
Retailer 12£407 GBP
Retailer 8£476 GBP
Retailer 6£477 GBP
Retailer 7£506 GBP
Retailer 2£519 GBP
Retailer 5£721 GBP
Retailer 9£861 GBP
Brilliant Earth£1,830 GBP

32 data points across 12 retailers

12 retailers£237 GBP to £1,830 GBP

A
Cheapest Retailer
-
£237 GBP
A
Retailer 2
-
£264 GBP
View
Final sale: no returns
A
Retailer 3
-
£293 GBP
View
Retailer 4
-
£296 GBP
View
Price last confirmed 11 days ago
A
Retailer 5
-
£407 GBP
View
A
Retailer 6
-
£476 GBP
View
B+
Retailer 7
-
£477 GBP
View
A
Retailer 8
-
£506 GBP
View
A
Retailer 9
-
£519 GBP
View
B+
Retailer 10
-
£721 GBP
View
B+
Retailer 11
-
£861 GBP
View
Most Expensive
B
Brilliant Earth
21696640A · Nov 2
£1,830 GBP
$2,470 USD
View
11 more retailers have this diamond
Prices start from £237 GBPSave up to £1,593 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
1.34ct Heart
£237 GBP