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Radiant|Natural|GIA

1.25ct I SI1 Radiant Natural Diamond

GD • I/SI1 • GIA 0152

Certificate GIA 0152

Diamond specifications and retailer prices

From £1,933 GBP
$2,594 USD
As of October 31, 2026
Save £142 GBP (7%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £2,075 GBP at B2C Jewels · As of November 2, 2026
View at B2C Jewels

About this 1.25ct natural radiant diamond

This 1.25ct natural radiant sits in the one-and-a-quarter to one-and-a-half carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA. Listed at 2 retailers as of October 31, 2026, with a relatively tight 7% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishGood
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 0152
Dimensions6.20 × 5.19 mm
L/W Ratio1.19
Top View
6.20 mm5.19 mm1.25 ctI / SI1
OriginNatural
CutGood
PolishGood
SymmetryGood
FluorescenceNone
CertificateGIA 0152
Side View
Table 71.0%CrownGirdle: VTK-ETKPavilionCulet: NoneDepth 78.8%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Oct 31
Current: £2,075 GBP|Low: £1,933 GBP|High: £2,075 GBP|Avg: £1,984 GBP|+1.5%
B2C Jewels
Retailer 2
September 23, 2026
Retailer 2£1,933 GBP
B2C Jewels£2,075 GBP

3 data points across 2 retailers

2 retailers£1,933 GBP to £2,075 GBP

B+
Cheapest Retailer
-
£1,933 GBP
$2,594 USD
Most Expensive
B+
B2C Jewels
19428235 · Nov 2
£2,075 GBP
$2,784 USD
View
1 more retailer has this diamond
Prices start from £1,933 GBPSave up to £142 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.

B+
1.25ct Radiant
£1,933 GBP