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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 $3,701 AUD
$2,594 USD
As of October 31, 2026
Save $272 AUD (7%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $3,972 AUD 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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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $3,972 AUD|Low: $3,701 AUD|High: $3,972 AUD|Avg: $3,798 AUD|+1.5%
B2C Jewels
Retailer 2
September 23, 2026
Retailer 2$3,701 AUD
B2C Jewels$3,972 AUD

3 data points across 2 retailers

2 retailers$3,701 AUD to $3,972 AUD

B+
Cheapest Retailer
-
$3,701 AUD
$2,594 USD
Most Expensive
B+
B2C Jewels
19428235 · Nov 2
$3,972 AUD
$2,784 USD
View
1 more retailer has this diamond
Prices start from $3,701 AUDSave up to $272 AUD

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
$3,701 AUD