CaratHunter
Plans
Heart|Lab Grown|IGI

1.00ct D IF Heart Lab Grown Diamond

VG • D/IF • IGI LG845697289

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG845697289

Diamond specifications and retailer prices

From £177 GBP
As of November 4, 2026
Save £867 GBP (83%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £1,044 GBP at Brilliant Earth · As of November 3, 2026
View at Brilliant Earth

About this 1ct lab-grown heart diamond

This 1ct lab-grown heart sits in the classic one-carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG845697289 or 845697289. Listed at 18 retailers as of November 3, 2026, with prices from £177 to £1,044, a £867 spread on the same certified stone. Brilliant Earth lists it at £1,044. 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

1.00
Carat
D
Colour
IF
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.6°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG845697289
Dimensions6.00 × 6.81 × 4.08 mm
L/W Ratio1.14
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
6.00 mm6.81 mm1.00 ctD / IF
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG845697289
Side View
Table 60.0%Crown 35.6°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 59.9%

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: £1,044 GBP|Low: £177 GBP|High: £1,044 GBP|Avg: £456 GBP
Brilliant Earth
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
November 5, 2026
Retailer 9£177 GBP
Retailer 6£197 GBP
Retailer 5£205 GBP
Retailer 8£219 GBP
Retailer 16£219 GBP
Retailer 12£225 GBP
Retailer 4£296 GBP
Retailer 14£378 GBP
Retailer 2£408 GBP
Retailer 18£410 GBP
Retailer 17£446 GBP
Retailer 13£536 GBP
Retailer 15£544 GBP
Retailer 7£704 GBP
Retailer 10£743 GBP
Retailer 11£876 GBP
Retailer 3£975 GBP
Brilliant Earth£1,044 GBP

18 data points across 18 retailers

18 retailers£177 GBP to £1,044 GBP

A
Cheapest Retailer
-
£177 GBP
A
Retailer 2
-
£197 GBP
View
Final sale: no returns
A
Retailer 3
-
£205 GBP
View
A
Retailer 4
-
£219 GBP
View
Retailer 5
-
£219 GBP
View
Price last confirmed 11 days ago
A
Retailer 6
-
£225 GBP
View
A
Retailer 7
-
£296 GBP
View
B+
Retailer 8
-
£378 GBP
View
B+
Retailer 9
-
£408 GBP
View
B+
Retailer 10
-
£410 GBP
View
B+
Retailer 11
-
£446 GBP
View
B+
Retailer 12
-
£536 GBP
View
B+
Retailer 13
-
£544 GBP
View
B
Retailer 14
-
£704 GBP
View
B
Retailer 15
-
£743 GBP
View
B
Retailer 16
-
£876 GBP
View
B
Retailer 17
-
£975 GBP
View
Most Expensive
B
Brilliant Earth
22458964A · Nov 3
£1,044 GBP
$1,410 USD
View
17 more retailers have this diamond
Prices start from £177 GBPSave up to £867 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
1.00ct Heart
£177 GBP