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Round|Lab Grown|IGI

1.55ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG807645112

Shape and cutting style on the report: Round brilliant

Certificate IGI LG807645112

Diamond specifications and retailer prices

From £245 GBP
$328 USD
As of October 29, 2026
Save £1,808 GBP (88%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £2,052 GBP at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.55ct lab-grown round diamond

This 1.55ct lab-grown round sits in the one-and-a-half to two carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG807645112 or 807645112. Listed at 20 retailers as of October 29, 2026, with prices from £245 to £2,052, a £1,808 spread on the same certified stone. Brilliant Earth lists it at £2,052. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.55
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG807645112
Dimensions7.40 × 7.37 × 4.56 mm
L/W Ratio1.00
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
7.40 mm7.37 mm1.55 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG807645112
Side View
Table 58.0%Crown 35°Girdle: MediumPavilion 40.8°Culet: NoneDepth 61.8%

Caratlytics Score

How it works →
A+
Exceptional
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: £2,052 GBP|Low: £245 GBP|High: £3,067 GBP|Avg: £661 GBP|-33.1%
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
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
October 30, 2026
Retailer 14£245 GBP
Retailer 19£274 GBP
Retailer 2£284 GBP
Retailer 8£303 GBP
Retailer 9£305 GBP
Retailer 10£334 GBP
Retailer 12£389 GBP
Retailer 4£407 GBP
Retailer 6£418 GBP
Retailer 16£485 GBP
Retailer 17£496 GBP
Retailer 3£521 GBP
Retailer 13£539 GBP
Retailer 18£706 GBP
Retailer 11£895 GBP
Retailer 5£968 GBP
Retailer 7£974 GBP
Retailer 15£1,221 GBP
Brilliant Earth£2,052 GBP

17 data points across 19 retailers

20 retailers£245 GBP to £2,052 GBP

A+
Cheapest Retailer
-
£245 GBP
$328 USD
A
Retailer 2
-
£274 GBP
$367 USD
View
Final sale: no returns
A
Retailer 3
-
£284 GBP
$380 USD
View
A
Retailer 4
-
£303 GBP
$406 USD
View
A
Retailer 5
-
£305 GBP
$409 USD
View
A
Retailer 6
-
£334 GBP
HK$3,500 HKD
View
A
Retailer 7
-
£389 GBP
View
A
Retailer 8
-
£407 GBP
$545 USD
View
A
Retailer 9
-
£418 GBP
$560 USD
View
A
Retailer 10
-
£485 GBP
€619 EUR
View
A
Retailer 11
-
£496 GBP
$665 USD
View
A
Retailer 12
-
£521 GBP
ZAR 11,273 ZAR
View
A
Retailer 13
-
£539 GBP
View
A
Retailer 14
-
£706 GBP
A$1,456 AUD
View
B+
Retailer 15
-
£895 GBP
$1,199 USD
View
B+
Retailer 16
-
£968 GBP
SGD 1,752 SGD
View
B+
Retailer 17
-
£974 GBP
$1,305 USD
View
B+
Retailer 18
-
£1,121 GBP
$1,502 USD
View
B+
Retailer 19
-
£1,221 GBP
View
Most Expensive
B
Brilliant Earth
20090410A · Oct 30
£2,052 GBP
$2,750 USD
View
19 more retailers have this diamond
Prices start from £245 GBPSave up to £1,808 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+
1.55ct Round
£245 GBP