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Round|Lab Grown|IGI

1.25ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG781641923

Shape and cutting style on the report: Round brilliant

Certificate IGI LG781641923

Diamond specifications and retailer prices

From £271 GBP
$364 USD
As of November 1, 2026
Save £1,480 GBP (85%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £1,751 GBP at Queensmith · As of October 27, 2026
View at Queensmith

About this 1.25ct lab-grown round diamond

This 1.25ct lab-grown round sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG781641923 or 781641923. Listed at 21 retailers as of October 27, 2026, with prices from £271 to £1,751, a £1,480 spread on the same certified stone. Queensmith lists it at £1,751. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.25
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG781641923
Dimensions6.88 × 6.84 × 4.27 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
6.88 mm6.84 mm1.25 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG781641923
Side View
Table 58.0%Crown 35.4°Girdle: MED-STKPavilion 40.9°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: Nov 1
Current: £533 GBP|Low: £271 GBP|High: £1,239 GBP|Avg: £691 GBP|+1.4%
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
Retailer 15
November 3, 2026
Retailer 3£271 GBP
Retailer 15£406 GBP
Retailer 13£417 GBP
Retailer 9£478 GBP
Retailer 8£490 GBP
Retailer 10£520 GBP
Retailer 1£533 GBP
Retailer 6£579 GBP
Retailer 14£732 GBP
Retailer 2£884 GBP
Retailer 5£895 GBP
Retailer 7£1,002 GBP
Retailer 12£1,040 GBP
Retailer 4£1,189 GBP
Retailer 11£1,208 GBP

39 data points across 15 retailers

21 retailers£271 GBP to £1,751 GBP

Retailer 1
-
£243 GBP
$326 USD
Price last confirmed 23 days ago
A
Retailer 2
-
£271 GBP
$364 USD
View
Final sale: no returns
Retailer 3
-
£282 GBP
$378 USD
View
Price last confirmed 20 days ago
Retailer 4
-
£301 GBP
$404 USD
View
Price last confirmed 17 days ago
Retailer 5
-
£301 GBP
$404 USD
View
Price last confirmed 31 days ago
A
Retailer 6
-
£406 GBP
$545 USD
View
A
Retailer 7
-
£417 GBP
$560 USD
View
A
Retailer 8
-
£478 GBP
View
A
Retailer 9
-
£490 GBP
€626 EUR
View
A
Retailer 10
-
£520 GBP
ZAR 11,266 ZAR
View
A
Retailer 11
-
£533 GBP
View
A
Retailer 12
-
£579 GBP
$777 USD
View
B+
Retailer 13
-
£732 GBP
A$1,511 AUD
View
B+
Retailer 14
-
£884 GBP
$1,186 USD
View
Retailer 15
-
£895 GBP
A$1,848 AUD
View
Price last confirmed 28 days ago
Retailer 16
-
£969 GBP
$1,300 USD
View
Price last confirmed 33 days ago
B+
Retailer 17
-
£1,002 GBP
$1,345 USD
View
B
Retailer 18
-
£1,040 GBP
$1,395 USD
View
B
Retailer 19
-
£1,189 GBP
$1,596 USD
View
B+
Retailer 20
-
£1,208 GBP
View
Most Expensive
B
Queensmith
LG781641923 · Oct 27
£1,751 GBP
View
20 more retailers have this diamond
Prices start from £271 GBPSave up to £1,480 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
1.25ct Round
£271 GBP