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Heart|Lab Grown|IGI

1.55ct D IF Heart Lab Grown Diamond

ID • D/IF • IGI LG843604947

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG843604947

Diamond specifications and retailer prices

From £400 GBP
As of November 2, 2026
Save £2,199 GBP (85%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £2,599 GBP at Novita Diamonds · As of October 31, 2026
View at Novita Diamonds

About this 1.55ct lab-grown heart diamond

This 1.55ct lab-grown heart sits in the one-and-a-half to two carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG843604947 or 843604947. Listed at 12 retailers as of October 31, 2026, with prices from £400 to £2,599, a £2,199 spread on the same certified stone. Novita Diamonds lists it at £2,599. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.55
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.3°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG843604947
Dimensions7.65 × 7.16 × 4.87 mm
L/W Ratio1.07
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
7.65 mm7.16 mm1.55 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG843604947
Side View
Table 59.0%Crown 36.3°Girdle: MED-STKPavilion 41°Culet: NoneDepth 63.7%

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 2
Current: £2,599 GBP|Low: £400 GBP|High: £5,024 GBP|Avg: £1,130 GBP
Novita Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 2£400 GBP
Retailer 8£493 GBP
Retailer 11£547 GBP
Retailer 5£617 GBP
Retailer 4£642 GBP
Retailer 7£881 GBP
Retailer 3£916 GBP
Retailer 9£1,005 GBP
Retailer 12£1,481 GBP
Retailer 6£2,105 GBP
Retailer 10£2,455 GBP
Novita Diamonds£2,599 GBP

16 data points across 12 retailers

12 retailers£400 GBP to £2,599 GBP

A
Cheapest Retailer
-
£400 GBP
A
Retailer 2
-
£493 GBP
$660 USD
View
A
Retailer 3
-
£547 GBP
$733 USD
View
A
Retailer 4
-
£617 GBP
€787 EUR
View
A
Retailer 5
-
£642 GBP
$860 USD
View
B+
Retailer 6
-
£881 GBP
A$1,816 AUD
View
B+
Retailer 7
-
£916 GBP
$1,228 USD
View
B+
Retailer 8
-
£1,005 GBP
$1,347 USD
View
B
Retailer 9
-
£1,481 GBP
View
B
Retailer 10
-
£2,105 GBP
$2,820 USD
View
B
Retailer 11
-
£2,455 GBP
$3,290 USD
View
Most Expensive
B
Novita Diamonds
cert_843604947 · Oct 31
£2,599 GBP
A$5,357 AUD
View
11 more retailers have this diamond
Prices start from £400 GBPSave up to £2,199 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
1.55ct Heart
£400 GBP