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Round|Lab Grown|IGI

1.55ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG768651149

Shape and cutting style on the report: Round brilliant

Certificate IGI LG768651149

Diamond specifications and retailer prices

From £248 GBP
$332 USD
As of October 29, 2026
Save £1,923 GBP (89%) vs most expensive(unlock to see where)
28 retailers carry this diamond
Most expensive: £2,171 GBP at Queensmith · As of October 27, 2026
View at Queensmith

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 LG768651149 or 768651149. Listed at 28 retailers as of October 27, 2026, with prices from £248 to £2,171, a £1,923 spread on the same certified stone. Queensmith lists it at £2,171. 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 angle35.9°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG768651149
Dimensions7.34 × 7.42 × 4.60 mm
L/W Ratio1.01
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 Type II
Top View
7.34 mm7.42 mm1.55 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG768651149
Side View
Table 57.0%Crown 35.9°Girdle: MediumPavilion 40.8°Culet: NoneDepth 62.2%

Caratlytics Score

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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: £716 GBP|Low: £248 GBP|High: £2,985 GBP|Avg: £842 GBP|-5.8%
Retailer 1
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 30, 2026
Retailer 6£248 GBP
Retailer 4£281 GBP
Retailer 9£395 GBP
Retailer 3£422 GBP
Retailer 12£491 GBP
Retailer 13£528 GBP
Retailer 2£528 GBP
Retailer 10£549 GBP
Retailer 1£716 GBP
Retailer 14£717 GBP
Retailer 5£1,046 GBP
Retailer 11£1,239 GBP
Retailer 7£1,302 GBP
Retailer 8£1,940 GBP

27 data points across 14 retailers

28 retailers£248 GBP to £2,171 GBP

A
Cheapest Retailer
-
£248 GBP
$332 USD
A
Retailer 2
-
£281 GBP
$377 USD
View
Final sale: no returns
A
Retailer 3
-
£287 GBP
$385 USD
View
A
Retailer 4
-
£307 GBP
$412 USD
View
A
Retailer 5
-
£307 GBP
$412 USD
View
A
Retailer 6
-
£344 GBP
HK$3,600 HKD
View
A
Retailer 7
-
£395 GBP
View
A
Retailer 8
-
£414 GBP
$555 USD
View
A
Retailer 9
-
£422 GBP
$565 USD
View
A
Retailer 10
-
£491 GBP
€626 EUR
View
A
Retailer 11
-
£528 GBP
A$1,088 AUD
View
A
Retailer 12
-
£528 GBP
ZAR 11,435 ZAR
View
A
Retailer 13
-
£549 GBP
View
A
Retailer 14
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£556 GBP
$745 USD
View
A
Retailer 15
-
£716 GBP
$960 USD
View
A
Retailer 16
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£717 GBP
A$1,477 AUD
View
B+
Retailer 17
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£755 GBP
$1,011 USD
View
Retailer 18
-
£838 GBP
$1,123 USD
View
Price last confirmed 44 days ago
B+
Retailer 19
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£985 GBP
SGD 1,784 SGD
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B+
Retailer 20
-
£988 GBP
$1,324 USD
View
B+
Retailer 21
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£1,021 GBP
$1,368 USD
View
B+
Retailer 22
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£1,046 GBP
$1,402 USD
View
B+
Retailer 23
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£1,079 GBP
$1,446 USD
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B+
Retailer 24
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£1,206 GBP
$1,615 USD
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B+
Retailer 25
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£1,239 GBP
View
B+
Retailer 26
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£1,302 GBP
A$2,684 AUD
View
B
Retailer 27
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£1,940 GBP
$2,600 USD
View
Most Expensive
B
Queensmith
LG768651149 · Oct 27
£2,171 GBP
View
27 more retailers have this diamond
Prices start from £248 GBPSave up to £1,923 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
£248 GBP