CaratHunter
Plans
Round|Lab Grown|IGI

1.25ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG823694923

Shape and cutting style on the report: Round brilliant

Certificate IGI LG823694923

Diamond specifications and retailer prices

From £338 GBP
$453 USD
As of November 1, 2026
Save £1,570 GBP (82%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £1,908 GBP at Brilliant Earth · As of November 2, 2026
View at Brilliant Earth

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 LG823694923 or 823694923. Listed at 21 retailers as of November 1, 2026, with prices from £338 to £1,908, a £1,570 spread on the same certified stone. Brilliant Earth lists it at £1,908. 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 angle34.5°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG823694923
Dimensions6.87 × 6.91 × 4.26 mm
L/W Ratio1.01
Girdle conditionFaceted
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
6.87 mm6.91 mm1.25 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG823694923
Side View
Table 57.0%Crown 34.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 61.8%

Caratlytics Score

How it works →
A
Excellent
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: Nov 1
Current: £1,908 GBP|Low: £338 GBP|High: £1,933 GBP|Avg: £915 GBP|+0.4%
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
Retailer 20
November 3, 2026
Retailer 3£338 GBP
Retailer 8£378 GBP
Retailer 9£378 GBP
Retailer 4£418 GBP
Retailer 20£458 GBP
Retailer 17£525 GBP
Retailer 6£613 GBP
Retailer 13£641 GBP
Retailer 10£655 GBP
Retailer 2£683 GBP
Retailer 14£721 GBP
Retailer 16£1,019 GBP
Retailer 18£1,069 GBP
Retailer 19£1,124 GBP
Retailer 12£1,326 GBP
Retailer 5£1,344 GBP
Retailer 7£1,368 GBP
Retailer 11£1,490 GBP
Retailer 15£1,536 GBP
Brilliant Earth£1,908 GBP

41 data points across 20 retailers

21 retailers£338 GBP to £1,908 GBP

A
Cheapest Retailer
-
£338 GBP
$453 USD
A
Retailer 2
-
£378 GBP
$507 USD
View
Final sale: no returns
A
Retailer 3
-
£378 GBP
$507 USD
View
A
Retailer 4
-
£418 GBP
$561 USD
View
Retailer 5
-
£418 GBP
$561 USD
View
Price last confirmed 17 days ago
A
Retailer 6
-
£458 GBP
HK$4,800 HKD
View
A
Retailer 7
-
£525 GBP
$705 USD
View
A
Retailer 8
-
£613 GBP
$822 USD
View
B+
Retailer 9
-
£641 GBP
€819 EUR
View
A
Retailer 10
-
£655 GBP
$879 USD
View
B+
Retailer 11
-
£683 GBP
View
B+
Retailer 12
-
£721 GBP
ZAR 15,635 ZAR
View
B+
Retailer 13
-
£1,019 GBP
A$2,104 AUD
View
B+
Retailer 14
-
£1,069 GBP
$1,435 USD
View
B
Retailer 15
-
£1,124 GBP
$1,509 USD
View
B+
Retailer 16
-
£1,326 GBP
SGD 2,405 SGD
View
B
Retailer 17
-
£1,344 GBP
$1,804 USD
View
B
Retailer 18
-
£1,368 GBP
$1,836 USD
View
B
Retailer 19
-
£1,490 GBP
$2,000 USD
View
B
Retailer 20
-
£1,536 GBP
View
Most Expensive
B
Brilliant Earth
21061263A · Nov 2
£1,908 GBP
$2,560 USD
View
20 more retailers have this diamond
Prices start from £338 GBPSave up to £1,570 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
£338 GBP