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Round|Lab Grown|IGI

1.48ct D VS1 Round Lab Grown Diamond

EX • D/VS1 • IGI LG778665139

Shape and cutting style on the report: Round brilliant

Certificate IGI LG778665139

Diamond specifications and retailer prices

From £143 GBP
$191 USD
As of November 1, 2026
Save £727 GBP (84%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £1,782 GBP at Queensmith · As of October 28, 2026
View at Queensmith

About this 1.48ct lab-grown round diamond

This 1.48ct lab-grown round sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG778665139 or 778665139. Listed at 22 retailers as of November 1, 2026, with a 510% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.48
Carat
D
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.7°
Pavilion angle41.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG778665139
Dimensions7.28 × 7.19 × 4.54 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
7.28 mm7.19 mm1.48 ctD / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG778665139
Side View
Table 58.0%Crown 35.7°Girdle: MED-STKPavilion 41.3°Culet: NoneDepth 62.7%

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: Nov 1
Current: £305 GBP|Low: £143 GBP|High: £886 GBP|Avg: £404 GBP|-3.9%
Retailer 1
Retailer 2
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Retailer 12
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Retailer 19
November 1, 2026
Retailer 12£143 GBP
Retailer 3£159 GBP
Retailer 7£175 GBP
Retailer 4£177 GBP
Retailer 9£187 GBP
Retailer 15£239 GBP
Retailer 16£300 GBP
Retailer 1£305 GBP
Retailer 6£313 GBP
Retailer 17£318 GBP
Retailer 18£369 GBP
Retailer 19£410 GBP
Retailer 8£457 GBP
Retailer 11£483 GBP
Retailer 5£569 GBP
Retailer 2£609 GBP
Retailer 10£619 GBP
Retailer 13£827 GBP
Retailer 14£870 GBP

35 data points across 19 retailers

22 retailers£143 GBP to £870 GBP

A
Cheapest Retailer
-
£143 GBP
$191 USD
A
Retailer 2
-
£159 GBP
$213 USD
View
Final sale: no returns
A
Retailer 3
-
£175 GBP
$235 USD
View
A
Retailer 4
-
£177 GBP
$237 USD
View
Retailer 5
-
£187 GBP
$251 USD
View
Price last confirmed 7 days ago
B+
Retailer 6
-
£239 GBP
$320 USD
View
A
Retailer 7
-
£300 GBP
View
A
Retailer 8
-
£305 GBP
ZAR 6,610 ZAR
View
A
Retailer 9
-
£313 GBP
€399 EUR
View
A
Retailer 10
-
£318 GBP
View
A
Retailer 11
-
£369 GBP
$494 USD
View
B+
Retailer 12
-
£410 GBP
$549 USD
View
B+
Retailer 13
-
£457 GBP
A$943 AUD
View
B+
Retailer 14
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£483 GBP
$647 USD
View
Retailer 15
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£522 GBP
$700 USD
View
Price last confirmed 27 days ago
Retailer 16
-
£549 GBP
$736 USD
View
Price last confirmed 46 days ago
B+
Retailer 17
-
£569 GBP
$762 USD
View
B+
Retailer 18
-
£609 GBP
$816 USD
View
B+
Retailer 19
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£619 GBP
$830 USD
View
B
Retailer 20
-
£827 GBP
View
B
Retailer 21
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£870 GBP
$1,165 USD
View
Most Expensive
Queensmith
LG778665139 · Oct 28
£1,782 GBP
View
Price under review
21 more retailers have this diamond
Prices start from £143 GBPSave up to £727 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
1.48ct Round
£143 GBP