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Radiant|Natural|GIA

1.51ct F SI2 Radiant Natural Diamond

GD • F/SI2 • GIA 6445035342

Certificate GIA 6445035342

Diamond specifications and retailer prices

From $3,893 AUD
As of November 6, 2026
Save $4,818 AUD (55%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $8,711 AUD at MOH London · As of November 4, 2026
View at MOH London

About this 1.51ct natural radiant diamond

This 1.51ct natural radiant sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6445035342. Listed at 11 retailers as of November 4, 2026, with prices from $3,893 to $8,711, a $4,818 spread on the same certified stone. MOH London lists it at $8,711. 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

1.51
Carat
F
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6445035342
Dimensions6.28 × 6.01 × 4.21 mm
L/W Ratio1.04
Top View
6.28 mm6.01 mm1.51 ctF / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6445035342
Side View
Table 65.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 70.0%

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: $8,711 AUD|Low: $3,855 AUD|High: $9,262 AUD|Avg: $5,674 AUD|-5.9%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 7, 2026
Retailer 7$3,893 AUD
Retailer 2$4,927 AUD
Retailer 8$5,001 AUD
Retailer 5$5,385 AUD
Retailer 3$5,405 AUD
Retailer 10$5,424 AUD
Retailer 9$5,434 AUD
Retailer 6$5,590 AUD
Retailer 4$5,724 AUD
MOH London$8,711 AUD

37 data points across 10 retailers

11 retailers$3,893 AUD to $8,711 AUD

A
Cheapest Retailer
-
$3,893 AUD
A
Retailer 2
-
$4,927 AUD
View
Retailer 3
-
$5,001 AUD
View
Price last confirmed 21 days ago
B+
Retailer 4
-
$5,191 AUD
View
A
Retailer 5
-
$5,385 AUD
View
A
Retailer 6
-
$5,405 AUD
View
Retailer 7
-
$5,424 AUD
View
Price last confirmed 19 days ago
B+
Retailer 8
-
$5,434 AUD
View
A
Retailer 9
-
$5,590 AUD
View
A
Retailer 10
-
$5,724 AUD
View
Most Expensive
B+
MOH London
6B9FBA835 · Nov 4
$8,711 AUD
£4,713 GBP
View
10 more retailers have this diamond
Prices start from $3,893 AUDSave up to $4,818 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
1.51ct Radiant
$3,893 AUD