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Heart|Lab Grown|IGI

1.00ct D FL Heart Lab Grown Diamond

VG • D/FL • IGI LG825667249

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG825667249

Diamond specifications and retailer prices

From £303 GBP
$407 USD
As of November 3, 2026
Save £1,658 GBP (85%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £1,961 GBP at Brilliant Earth · As of November 2, 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 FL clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG825667249 or 825667249. Listed at 19 retailers as of November 2, 2026, with prices from £303 to £1,961, a £1,658 spread on the same certified stone. Brilliant Earth lists it at £1,961. 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
FL
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.8°
Pavilion angle38.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG825667249
Dimensions6.25 × 6.97 × 3.98 mm
L/W Ratio1.12
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
6.25 mm6.97 mm1.00 ctD / FL
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG825667249
Side View
Table 59.0%Crown 35.8°Girdle: STK-THKPavilion 38.9°Culet: NoneDepth 57.1%

Caratlytics Score

How it works →
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: Nov 3
Current: £1,961 GBP|Low: £292 GBP|High: £1,961 GBP|Avg: £743 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
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Retailer 17
November 3, 2026
Retailer 4£303 GBP
Retailer 7£303 GBP
Retailer 9£339 GBP
Retailer 11£347 GBP
Retailer 8£377 GBP
Retailer 17£445 GBP
Retailer 13£451 GBP
Retailer 15£476 GBP
Retailer 6£567 GBP
Retailer 12£582 GBP
Retailer 2£609 GBP
Retailer 3£771 GBP
Retailer 14£834 GBP
Retailer 5£1,115 GBP
Retailer 16£1,283 GBP
Retailer 10£1,318 GBP
Brilliant Earth£1,961 GBP

31 data points across 17 retailers

19 retailers£303 GBP to £1,961 GBP

A
Cheapest Retailer
-
£303 GBP
$407 USD
Final sale: no returns
Retailer 2
-
£303 GBP
$407 USD
View
Price last confirmed 26 days ago
Retailer 3
-
£339 GBP
$454 USD
View
Price last confirmed 35 days ago
A
Retailer 4
-
£347 GBP
View
Retailer 5
-
£377 GBP
$505 USD
View
Price last confirmed 31 days ago
Retailer 6
-
£377 GBP
$505 USD
View
Price last confirmed 22 days ago
B+
Retailer 7
-
£445 GBP
$597 USD
View
B+
Retailer 8
-
£451 GBP
$605 USD
View
B+
Retailer 9
-
£476 GBP
$638 USD
View
B+
Retailer 10
-
£567 GBP
$761 USD
View
B+
Retailer 11
-
£582 GBP
ZAR 12,607 ZAR
View
B+
Retailer 12
-
£609 GBP
View
B
Retailer 13
-
£771 GBP
$1,034 USD
View
B
Retailer 14
-
£834 GBP
$1,119 USD
View
B
Retailer 15
-
£1,115 GBP
$1,495 USD
View
Retailer 16
-
£1,210 GBP
$1,623 USD
View
Price last confirmed 29 days ago
B
Retailer 17
-
£1,283 GBP
$1,720 USD
View
B
Retailer 18
-
£1,318 GBP
View
Most Expensive
B
Brilliant Earth
21584437A · Nov 2
£1,961 GBP
$2,630 USD
View
18 more retailers have this diamond
Prices start from £303 GBPSave up to £1,658 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
£303 GBP