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Round|Lab Grown|IGI

1.89ct E IF Round Lab Grown Diamond

ID • E/IF • IGI LG778691335

Shape and cutting style on the report: Round brilliant

Certificate IGI LG778691335

Diamond specifications and retailer prices

From £489 GBP
$651 USD
As of October 29, 2026
Save £3,439 GBP (88%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: £3,927 GBP at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.89ct lab-grown round diamond

This 1.89ct lab-grown round sits in the one-and-a-half to two carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG778691335 or 778691335. Listed at 23 retailers as of October 29, 2026, with prices from £489 to £3,927, a £3,439 spread on the same certified stone. Brilliant Earth lists it at £3,927. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.89
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.1°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG778691335
Dimensions7.89 × 7.94 × 4.90 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
HEARTS & ARROWS 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
7.89 mm7.94 mm1.89 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG778691335
Side View
Table 57.0%Crown 34.1°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.0%

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 29
Current: £3,927 GBP|Low: £547 GBP|High: £3,927 GBP|Avg: £1,423 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
October 29, 2026
Retailer 6£547 GBP
Retailer 11£702 GBP
Retailer 4£761 GBP
Retailer 2£903 GBP
Retailer 8£923 GBP
Retailer 14£926 GBP
Retailer 9£1,042 GBP
Retailer 10£1,411 GBP
Retailer 12£1,449 GBP
Retailer 13£1,831 GBP
Retailer 3£1,913 GBP
Retailer 5£2,073 GBP
Retailer 7£2,401 GBP
Brilliant Earth£3,927 GBP

43 data points across 14 retailers

23 retailers£489 GBP to £3,927 GBP

A
Cheapest Retailer
-
£489 GBP
$651 USD
A
Retailer 2
-
£532 GBP
$708 USD
View
A
Retailer 3
-
£547 GBP
$728 USD
View
Final sale: no returns
Retailer 4
-
£567 GBP
$755 USD
View
Price last confirmed 13 days ago
A
Retailer 5
-
£567 GBP
$755 USD
View
A
Retailer 6
-
£663 GBP
HK$6,900 HKD
View
A
Retailer 7
-
£702 GBP
$935 USD
View
A
Retailer 8
-
£761 GBP
$1,014 USD
View
A
Retailer 9
-
£903 GBP
View
A
Retailer 10
-
£923 GBP
€1,171 EUR
View
A
Retailer 11
-
£926 GBP
$1,233 USD
View
B+
Retailer 12
-
£1,042 GBP
ZAR 22,413 ZAR
View
B+
Retailer 13
-
£1,066 GBP
$1,419 USD
View
Retailer 14
-
£1,411 GBP
A$2,890 AUD
View
Price last confirmed 8 days ago
B+
Retailer 15
-
£1,449 GBP
$1,929 USD
View
B+
Retailer 16
-
£1,594 GBP
$2,123 USD
View
B+
Retailer 17
-
£1,831 GBP
$2,438 USD
View
B
Retailer 18
-
£1,913 GBP
SGD 3,442 SGD
View
B
Retailer 19
-
£1,934 GBP
$2,576 USD
View
B
Retailer 20
-
£1,957 GBP
$2,605 USD
View
B
Retailer 21
-
£1,977 GBP
$2,633 USD
View
B
Retailer 22
-
£2,401 GBP
View
Most Expensive
B
Brilliant Earth
19064225A · Oct 29
£3,927 GBP
$5,230 USD
View
22 more retailers have this diamond
Prices start from £489 GBPSave up to £3,439 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
1.89ct Round
£489 GBP