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Heart|Lab Grown|IGI

1.17ct E IF Heart Lab Grown Diamond

ID • E/IF • IGI LG836617987

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG836617987

Diamond specifications and retailer prices

From £172 GBP
$231 USD
As of October 30, 2026
Save £999 GBP (85%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £1,172 GBP at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.17ct lab-grown heart diamond

This 1.17ct lab-grown heart sits in the classic one-carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG836617987 or 836617987. Listed at 19 retailers as of October 30, 2026, with prices from £172 to £1,172, a £999 spread on the same certified stone. Brilliant Earth lists it at £1,172. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.17
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.8°
Pavilion angle38.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG836617987
Dimensions6.45 × 7.28 × 4.32 mm
L/W Ratio1.13
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
6.45 mm7.28 mm1.17 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG836617987
Side View
Table 56.0%Crown 36.8°Girdle: Slightly ThickPavilion 38.9°Culet: NoneDepth 59.3%

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: Oct 30
Current: £1,172 GBP|Low: £172 GBP|High: £1,672 GBP|Avg: £535 GBP|-29.9%
Brilliant Earth
Retailer 2
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Retailer 19
October 30, 2026
Retailer 5£172 GBP
Retailer 3£193 GBP
Retailer 17£200 GBP
Retailer 4£214 GBP
Retailer 10£214 GBP
Retailer 15£227 GBP
Retailer 8£363 GBP
Retailer 12£368 GBP
Retailer 19£392 GBP
Retailer 2£403 GBP
Retailer 13£522 GBP
Retailer 6£549 GBP
Retailer 11£687 GBP
Retailer 16£690 GBP
Retailer 7£727 GBP
Retailer 9£729 GBP
Retailer 18£786 GBP
Retailer 14£859 GBP
Brilliant Earth£1,172 GBP

23 data points across 19 retailers

19 retailers£172 GBP to £1,172 GBP

A
Cheapest Retailer
-
£172 GBP
$231 USD
A
Retailer 2
-
£193 GBP
$259 USD
View
Final sale: no returns
A
Retailer 3
-
£200 GBP
$268 USD
View
A
Retailer 4
-
£214 GBP
$287 USD
View
A
Retailer 5
-
£214 GBP
$287 USD
View
Retailer 6
-
£227 GBP
View
Price last confirmed 13 days ago
A
Retailer 7
-
£363 GBP
$486 USD
View
A
Retailer 8
-
£368 GBP
ZAR 7,955 ZAR
View
A
Retailer 9
-
£392 GBP
$525 USD
View
A
Retailer 10
-
£403 GBP
View
B+
Retailer 11
-
£522 GBP
A$1,076 AUD
View
B+
Retailer 12
-
£549 GBP
$735 USD
View
B+
Retailer 13
-
£687 GBP
$921 USD
View
B+
Retailer 14
-
£690 GBP
$925 USD
View
B+
Retailer 15
-
£727 GBP
$974 USD
View
B+
Retailer 16
-
£729 GBP
SGD 1,320 SGD
View
B+
Retailer 17
-
£786 GBP
$1,053 USD
View
B+
Retailer 18
-
£859 GBP
View
Most Expensive
B
Brilliant Earth
21738532A · Oct 30
£1,172 GBP
$1,570 USD
View
18 more retailers have this diamond
Prices start from £172 GBPSave up to £999 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
1.17ct Heart
£172 GBP