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Heart|Lab Grown|IGI

1.00ct D SI2 Heart Lab Grown Diamond

FR • D/SI2 • IGI LG497161164

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG497161164

Diamond specifications and retailer prices

From £177 GBP
$237 USD
As of October 30, 2026
Save £607 GBP (77%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £784 GBP at NZ Jewellers · As of October 29, 2026
View at NZ Jewellers

About this 1ct lab-grown heart diamond

This 1ct lab-grown heart sits in the classic one-carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a standard cut grade and certified by IGI LG497161164 or 497161164. Listed at 10 retailers as of October 29, 2026, with prices from £177 to £784, a £607 spread on the same certified stone. NZ Jewellers lists it at £784. 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
SI2
Clarity
Fair
Cut

Specifications

CutFair
PolishVery Good
SymmetryGood
FluorescenceNone
Crown angle36.5°
Pavilion angle41.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG497161164
Dimensions5.58 × 7.02 × 4.25 mm
L/W Ratio1.26
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.
Top View
5.58 mm7.02 mm1.00 ctD / SI2
OriginLab Grown
CutFair
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateIGI LG497161164
Side View
Table 49.0%Crown 36.5°Girdle: THK-ETKPavilion 41.8°Culet: NoneDepth 60.5%

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: Oct 30
Current: £784 GBP|Low: £171 GBP|High: £784 GBP|Avg: £374 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 9£177 GBP
Retailer 3£178 GBP
Retailer 6£207 GBP
Retailer 4£221 GBP
Retailer 7£221 GBP
Retailer 5£372 GBP
Retailer 8£393 GBP
Retailer 2£467 GBP
Retailer 10£704 GBP
NZ Jewellers£784 GBP

42 data points across 10 retailers

10 retailers£177 GBP to £784 GBP

B+
Cheapest Retailer
-
£177 GBP
$237 USD
B+
Retailer 2
-
£178 GBP
$239 USD
View
B+
Retailer 3
-
£207 GBP
$277 USD
View
B+
Retailer 4
-
£221 GBP
$296 USD
View
B+
Retailer 5
-
£221 GBP
$296 USD
View
B
Retailer 6
-
£372 GBP
$499 USD
View
B
Retailer 7
-
£393 GBP
$527 USD
View
C
Retailer 8
-
£467 GBP
View
C
Retailer 9
-
£704 GBP
CA$1,310 CAD
View
Most Expensive
C
NZ Jewellers
80a713a0-2224-468c-980f-652c4bb42cb5 · Oct 29
£784 GBP
$1,050 USD
View
9 more retailers have this diamond
Prices start from £177 GBPSave up to £607 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+
1.00ct Heart
£177 GBP