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Radiant|Natural|GIA

1.51ct K SI1 Radiant Natural Diamond

VG • K/SI1 • GIA 3545914037

Certificate GIA 3545914037

Diamond specifications and retailer prices

From $3,366 AUD
As of November 5, 2026
Save $2,713 AUD (45%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $6,079 AUD at Wholesale Diamonds Direct · As of November 6, 2026
View at Wholesale Diamonds Direct

About this 1.51ct natural radiant diamond

This 1.51ct natural radiant sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 3545914037. Listed at 12 retailers as of November 5, 2026, with prices from $3,366 to $6,079, a $2,713 spread on the same certified stone. Wholesale Diamonds Direct lists it at $6,079. 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
K
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 3545914037
Dimensions7.44 × 5.89 × 3.96 mm
L/W Ratio1.26
Top View
7.44 mm5.89 mm1.51 ctK / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 3545914037
Side View
Table 69.0%CrownGirdle: Very ThickPavilionCulet: NoneDepth 67.3%

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 5
Current: $3,889 AUD|Low: $3,347 AUD|High: $6,194 AUD|Avg: $4,518 AUD|-0.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Wholesale Diamonds Direct
November 7, 2026
Retailer 4$3,366 AUD
Retailer 8$3,574 AUD
Retailer 9$3,611 AUD
Retailer 7$3,636 AUD
Retailer 1$3,889 AUD
Retailer 3$3,960 AUD
Retailer 11$4,272 AUD
Retailer 2$4,446 AUD
Retailer 5$4,560 AUD
Retailer 6$4,673 AUD
Retailer 10$5,542 AUD
Wholesale Diamonds Direct$6,079 AUD

44 data points across 12 retailers

12 retailers$3,366 AUD to $6,079 AUD

A
Cheapest Retailer
-
$3,366 AUD
A
Retailer 2
-
$3,574 AUD
View
A
Retailer 3
-
$3,611 AUD
View
A
Retailer 4
-
$3,636 AUD
View
A
Retailer 5
-
$3,889 AUD
View
B+
Retailer 6
-
$3,960 AUD
View
B+
Retailer 7
-
$4,272 AUD
View
B+
Retailer 8
-
$4,446 AUD
View
A
Retailer 9
-
$4,560 AUD
View
A
Retailer 10
-
$4,673 AUD
View
B+
Retailer 11
-
$5,542 AUD
View
Most Expensive
B+
Wholesale Diamonds Direct
584156308 · Nov 6
$6,079 AUD
$4,177 USD
View
11 more retailers have this diamond
Prices start from $3,366 AUDSave up to $2,713 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
$3,366 AUD