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Radiant|Natural|GIA

1.00ct D SI2 Radiant Natural Diamond

ID • D/SI2 • GIA 1545627178

Certificate GIA 1545627178

Diamond specifications and retailer prices

From $3,409 AUD
As of November 6, 2026
Save $2,835 AUD (45%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $7,283 AUD at MOH London · As of October 29, 2026
View at MOH London

About this 1ct natural radiant diamond

This 1ct natural radiant sits in the classic one-carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1545627178. Listed at 19 retailers as of November 6, 2026, with a 83% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.00
Carat
D
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 1545627178
Dimensions6.80 × 4.91 × 3.37 mm
L/W Ratio1.38
Culet sizeNone
Top View
6.80 mm4.91 mm1.00 ctD / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 1545627178
Side View
Table 69.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 68.6%

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 6
Current: $7,283 AUD|Low: $3,122 AUD|High: $7,331 AUD|Avg: $4,683 AUD|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 7, 2026
Retailer 7$3,409 AUD
Retailer 4$3,435 AUD
Retailer 5$3,924 AUD
Retailer 6$4,254 AUD
Retailer 2$4,585 AUD
Retailer 8$5,028 AUD
Retailer 3$5,043 AUD
Retailer 9$5,154 AUD
MOH London$7,283 AUD

42 data points across 9 retailers

19 retailers$3,409 AUD to $6,244 AUD

A
Cheapest Retailer
-
$3,409 AUD
A
Retailer 2
-
$3,435 AUD
View
Final sale: no returns
A
Retailer 3
-
$3,515 AUD
View
A
Retailer 4
-
$3,528 AUD
View
A
Retailer 5
-
$3,703 AUD
View
Retailer 6
-
$3,924 AUD
View
Price last confirmed 9 days ago
B+
Retailer 7
-
$4,254 AUD
View
B+
Retailer 8
-
$4,257 AUD
View
B+
Retailer 9
-
$4,257 AUD
View
B+
Retailer 10
-
$4,291 AUD
View
B+
Retailer 11
-
$4,483 AUD
View
B+
Retailer 12
-
$4,483 AUD
View
B+
Retailer 13
-
$4,585 AUD
View
B+
Retailer 14
-
$4,628 AUD
View
Retailer 15
-
$5,028 AUD
View
Price last confirmed 15 days ago
B+
Retailer 16
-
$5,043 AUD
View
B+
Retailer 17
-
$5,251 AUD
View
B
Retailer 18
-
$6,244 AUD
View
Most Expensive
MOH London
D538187AC · Oct 29
$7,283 AUD
£3,940 GBP
View
Price last confirmed 9 days ago
18 more retailers have this diamond
Prices start from $3,409 AUDSave up to $2,835 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
1.00ct Radiant
$3,409 AUD