CaratHunter
Plans
Heart|Lab Grown|IGI

1.01ct D SI1 Heart Lab Grown Diamond

EX • D/SI1 • IGI LG571301614

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG571301614

Diamond specifications and retailer prices

From £249 GBP
As of November 6, 2026
Save £988 GBP (80%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £1,236 GBP at MOH London · As of November 3, 2026
View at MOH London

About this 1.01ct lab-grown heart diamond

This 1.01ct lab-grown heart sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG571301614 or 571301614. Listed at 12 retailers as of November 3, 2026, with prices from £249 to £1,236, a £988 spread on the same certified stone. MOH London lists it at £1,236. 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

1.01
Carat
D
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.2°
Pavilion angle39.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG571301614
Dimensions5.75 × 6.87 × 4.27 mm
L/W Ratio1.19
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
5.75 mm6.87 mm1.01 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG571301614
Side View
Table 58.0%Crown 37.2°GirdlePavilion 39.7°Culet: NoneDepth 62.2%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £1,236 GBP|Low: £199 GBP|High: £1,251 GBP|Avg: £512 GBP|-1.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 9£249 GBP
Retailer 3£279 GBP
Retailer 4£288 GBP
Retailer 8£288 GBP
Retailer 6£309 GBP
Retailer 2£367 GBP
Retailer 11£422 GBP
Retailer 12£498 GBP
Retailer 5£547 GBP
Retailer 10£905 GBP
Retailer 7£991 GBP
MOH London£1,236 GBP

46 data points across 12 retailers

12 retailers£249 GBP to £1,236 GBP

B+
Cheapest Retailer
-
£249 GBP
B+
Retailer 2
-
£279 GBP
View
Final sale: no returns
B+
Retailer 3
-
£288 GBP
View
B+
Retailer 4
-
£288 GBP
View
B+
Retailer 5
-
£309 GBP
View
B+
Retailer 6
-
£367 GBP
View
B
Retailer 7
-
£422 GBP
View
B
Retailer 8
-
£498 GBP
View
B
Retailer 9
-
£547 GBP
View
B
Retailer 10
-
£905 GBP
View
B
Retailer 11
-
£991 GBP
View
Most Expensive
B
MOH London
LG571301614 · Nov 3
£1,236 GBP
View
11 more retailers have this diamond
Prices start from £249 GBPSave up to £988 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.

B+
1.01ct Heart
£249 GBP