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Heart|Lab Grown|IGI

1.09ct D FL Heart Lab Grown Diamond

VG • D/FL • IGI LG825632718

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG825632718

Diamond specifications and retailer prices

From £316 GBP
$424 USD
As of October 30, 2026
Save £1,691 GBP (84%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £2,008 GBP at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.09ct lab-grown heart diamond

This 1.09ct lab-grown heart sits in the classic one-carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG825632718 or 825632718. Listed at 19 retailers as of October 30, 2026, with prices from £316 to £2,008, a £1,691 spread on the same certified stone. Brilliant Earth lists it at £2,008. 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

1.09
Carat
D
Colour
FL
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle38.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG825632718
Dimensions6.39 × 7.01 × 4.09 mm
L/W Ratio1.10
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
6.39 mm7.01 mm1.09 ctD / FL
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG825632718
Side View
Table 55.0%Crown 34.5°Girdle: STK-THKPavilion 38.9°Culet: NoneDepth 58.3%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £2,008 GBP|Low: £316 GBP|High: £2,142 GBP|Avg: £890 GBP|-6.3%
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
October 31, 2026
Retailer 4£316 GBP
Retailer 10£363 GBP
Retailer 8£463 GBP
Retailer 12£494 GBP
Retailer 14£513 GBP
Retailer 2£563 GBP
Retailer 11£604 GBP
Retailer 7£636 GBP
Retailer 3£806 GBP
Retailer 9£872 GBP
Retailer 6£1,159 GBP
Retailer 13£1,319 GBP
Retailer 5£1,375 GBP
Brilliant Earth£2,008 GBP

29 data points across 14 retailers

19 retailers£316 GBP to £2,008 GBP

A
Cheapest Retailer
-
£316 GBP
$424 USD
Final sale: no returns
Retailer 2
-
£329 GBP
$441 USD
View
Price last confirmed 23 days ago
A
Retailer 3
-
£363 GBP
View
Retailer 4
-
£367 GBP
$492 USD
View
Price last confirmed 32 days ago
Retailer 5
-
£408 GBP
$547 USD
View
Price last confirmed 28 days ago
Retailer 6
-
£408 GBP
$547 USD
View
Price last confirmed 19 days ago
B+
Retailer 7
-
£463 GBP
$620 USD
View
B+
Retailer 8
-
£494 GBP
$662 USD
View
B+
Retailer 9
-
£513 GBP
$688 USD
View
B+
Retailer 10
-
£563 GBP
€719 EUR
View
B+
Retailer 11
-
£604 GBP
ZAR 13,080 ZAR
View
B+
Retailer 12
-
£636 GBP
View
B
Retailer 13
-
£806 GBP
$1,080 USD
View
B
Retailer 14
-
£872 GBP
$1,169 USD
View
B
Retailer 15
-
£1,159 GBP
$1,553 USD
View
Retailer 16
-
£1,313 GBP
$1,759 USD
View
Price last confirmed 26 days ago
B
Retailer 17
-
£1,319 GBP
$1,768 USD
View
B
Retailer 18
-
£1,375 GBP
View
Most Expensive
B
Brilliant Earth
21580697A · Oct 30
£2,008 GBP
$2,690 USD
View
18 more retailers have this diamond
Prices start from £316 GBPSave up to £1,691 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
1.09ct Heart
£316 GBP