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Radiant|Lab Grown|IGI

1.25ct I VS1 Radiant Lab Grown Diamond

VG • I/VS1 • IGI LG681504549

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG681504549

Diamond specifications and retailer prices

From £114 GBP
As of November 4, 2026
Save £625 GBP (85%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £739 GBP at Flawless Fine Jewelry · As of November 4, 2026
View at Flawless Fine Jewelry

About this 1.25ct lab-grown radiant diamond

This 1.25ct lab-grown radiant sits in the one-and-a-quarter to one-and-a-half carat band, graded I colour (near-colourless) and VS1 clarity (very-slightly-included), with a very-good cut grade and certified by IGI LG681504549 or 681504549. Listed at 16 retailers as of November 4, 2026, with prices from £114 to £739, a £625 spread on the same certified stone. Flawless Fine Jewelry lists it at £739. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.25
Carat
I
Colour
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle46.2°
Pavilion angle35.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG681504549
Dimensions7.40 × 5.33 × 3.71 mm
L/W Ratio1.39
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.40 mm5.33 mm1.25 ctI / VS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG681504549
Side View
Table 64.0%Crown 46.2°Girdle: MediumPavilion 35.8°Culet: NoneDepth 69.6%

Caratlytics Score

How it works →
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 4
Current: £739 GBP|Low: £93 GBP|High: £750 GBP|Avg: £357 GBP|-1.5%
Flawless Fine Jewelry
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
November 4, 2026
Retailer 3£114 GBP
Retailer 8£129 GBP
Retailer 13£132 GBP
Retailer 6£141 GBP
Retailer 7£145 GBP
Retailer 11£243 GBP
Retailer 4£258 GBP
Retailer 9£266 GBP
Retailer 15£303 GBP
Retailer 16£330 GBP
Retailer 2£377 GBP
Retailer 12£453 GBP
Retailer 14£479 GBP
Retailer 5£494 GBP
Retailer 10£660 GBP
Flawless Fine Jewelry£739 GBP

35 data points across 16 retailers

16 retailers£114 GBP to £739 GBP

A
Cheapest Retailer
-
£114 GBP
A
Retailer 2
-
£129 GBP
View
Final sale: no returns
A
Retailer 3
-
£132 GBP
View
A
Retailer 4
-
£141 GBP
View
Retailer 5
-
£145 GBP
View
Price last confirmed 10 days ago
A
Retailer 6
-
£243 GBP
View
B+
Retailer 7
-
£258 GBP
View
A
Retailer 8
-
£266 GBP
View
A
Retailer 9
-
£303 GBP
View
A
Retailer 10
-
£330 GBP
View
B+
Retailer 11
-
£377 GBP
View
B+
Retailer 12
-
£453 GBP
View
B+
Retailer 13
-
£479 GBP
View
B+
Retailer 14
-
£494 GBP
View
B
Retailer 15
-
£660 GBP
View
Most Expensive
B
Flawless Fine Jewelry
1663C9FB3 · Nov 4
£739 GBP
View
15 more retailers have this diamond
Prices start from £114 GBPSave up to £625 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 Radiant
£114 GBP