CaratHunter
Plans
Heart|Lab Grown|IGI

1.55ct D VVS1 Heart Lab Grown Diamond

EX • D/VVS1 • IGI LG631464178

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG631464178

Diamond specifications and retailer prices

From £197 GBP
As of November 4, 2026
Save £1,031 GBP (84%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: £2,013 GBP at Queensmith · As of October 27, 2026
View at Queensmith

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 VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG631464178 or 631464178. Listed at 25 retailers as of October 30, 2026, with a 523% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
VVS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.1°
Pavilion angle41.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG631464178
Dimensions6.97 × 8.06 × 4.77 mm
L/W Ratio1.16
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
6.97 mm8.06 mm1.55 ctD / VVS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG631464178
Side View
Table 62.0%Crown 35.1°Girdle: MED-STKPavilion 41.8°Culet: NoneDepth 59.2%

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: £460 GBP|Low: £191 GBP|High: £1,511 GBP|Avg: £606 GBP|-0.3%
Retailer 1
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
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Retailer 22
November 5, 2026
Retailer 5£197 GBP
Retailer 8£220 GBP
Retailer 2£228 GBP
Retailer 4£244 GBP
Retailer 9£244 GBP
Retailer 10£330 GBP
Retailer 22£363 GBP
Retailer 19£421 GBP
Retailer 1£460 GBP
Retailer 21£476 GBP
Retailer 7£495 GBP
Retailer 3£526 GBP
Retailer 18£571 GBP
Retailer 16£593 GBP
Retailer 17£750 GBP
Retailer 6£785 GBP
Retailer 14£822 GBP
Retailer 13£940 GBP
Retailer 12£975 GBP
Retailer 11£1,039 GBP
Retailer 20£1,228 GBP
Retailer 15£1,511 GBP

41 data points across 22 retailers

25 retailers£197 GBP to £1,228 GBP

A
Cheapest Retailer
-
£197 GBP
A
Retailer 2
-
£220 GBP
View
Final sale: no returns
A
Retailer 3
-
£228 GBP
View
A
Retailer 4
-
£244 GBP
View
Retailer 5
-
£244 GBP
View
Price last confirmed 11 days ago
B+
Retailer 6
-
£330 GBP
View
A
Retailer 7
-
£363 GBP
View
A
Retailer 8
-
£421 GBP
View
B+
Retailer 9
-
£460 GBP
View
B+
Retailer 10
-
£476 GBP
View
B+
Retailer 11
-
£495 GBP
View
B+
Retailer 12
-
£526 GBP
View
B+
Retailer 13
-
£571 GBP
View
B+
Retailer 14
-
£593 GBP
View
B+
Retailer 15
-
£626 GBP
View
B+
Retailer 16
-
£750 GBP
View
B
Retailer 17
-
£785 GBP
View
B
Retailer 18
-
£791 GBP
View
B
Retailer 19
-
£822 GBP
View
Retailer 20
-
£940 GBP
View
Price last confirmed 10 days ago
B+
Retailer 21
-
£975 GBP
View
B
Retailer 22
-
£1,039 GBP
View
B
Retailer 23
-
£1,228 GBP
View
Retailer 24
-
£1,511 GBP
View
Price last confirmed 9 days ago
Most Expensive
Queensmith
LG631464178 · Oct 27
£2,013 GBP
View
Price last confirmed 8 days ago
24 more retailers have this diamond
Prices start from £197 GBPSave up to £1,031 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
£197 GBP