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Radiant|Natural|GIA

1.05ct G SI1 Radiant Natural Diamond

ID • G/SI1 • GIA 2557478773

Certificate GIA 2557478773

Diamond specifications and retailer prices

From $2,635 AUD
$1,847 USD
As of November 1, 2026
Save $537 AUD (17%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $3,172 AUD at Blue Nile · As of October 31, 2026
View at Blue Nile

About this 1.05ct natural radiant diamond

This 1.05ct natural radiant sits in the classic one-carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2557478773. Listed at 6 retailers as of October 31, 2026, with prices from $2,635 to $3,172, a $537 spread on the same certified stone. Blue Nile lists it at $3,172. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.05
Carat
G
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2557478773
Dimensions6.84 × 4.96 × 3.34 mm
L/W Ratio1.38
Culet sizeNone
Key to symbols
Crystal, Cloud, Needle
Top View
6.84 mm4.96 mm1.05 ctG / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2557478773
Side View
Table 65.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 67.4%

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: $3,172 AUD|Low: $2,292 AUD|High: $3,375 AUD|Avg: $2,918 AUD|-6.0%
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 17, 2026
Retailer 2$2,635 AUD
Retailer 4$2,654 AUD
Retailer 5$2,680 AUD
Retailer 3$3,025 AUD
Retailer 6$3,124 AUD
Blue Nile$3,172 AUD

10 data points across 6 retailers

6 retailers$2,635 AUD to $3,172 AUD

A
Cheapest Retailer
-
$2,635 AUD
$1,847 USD
A
Retailer 2
-
$2,654 AUD
$1,860 USD
View
Final sale: no returns
A
Retailer 3
-
$2,680 AUD
MYR 7,649 MYR
View
A
Retailer 4
-
$3,025 AUD
SGD 2,865 SGD
View
A
Retailer 5
-
$3,124 AUD
View
Most Expensive
A
Blue Nile
29370756 · Oct 31
$3,172 AUD
$2,223 USD
View
5 more retailers have this diamond
Prices start from $2,635 AUDSave up to $537 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.

A
1.05ct Radiant
$2,635 AUD