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Radiant|Natural|GIA

1.51ct I SI1 Radiant Natural Diamond

EX • I/SI1 • GIA 1558685000

Certificate GIA 1558685000

Diamond specifications and retailer prices

From $5,885 AUD
$4,124 USD
As of November 1, 2026
Save $4,779 AUD (45%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $10,663 AUD at Wholesale Diamonds Direct · As of October 26, 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 I 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 1558685000. Listed at 13 retailers as of October 26, 2026, with prices from $5,885 to $10,663, a $4,779 spread on the same certified stone. Wholesale Diamonds Direct lists it at $10,663. 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

1.51
Carat
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1558685000
Dimensions7.75 × 5.70 × 3.87 mm
L/W Ratio1.36
Culet sizeNone
Top View
7.75 mm5.70 mm1.51 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1558685000
Side View
Table 67.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 67.8%

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: $7,545 AUD|Low: $5,885 AUD|High: $10,870 AUD|Avg: $7,555 AUD|-1.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Wholesale Diamonds Direct
November 2, 2026
Retailer 10$5,885 AUD
Retailer 12$5,952 AUD
Retailer 8$6,050 AUD
Retailer 9$6,188 AUD
Retailer 4$6,378 AUD
Retailer 6$6,648 AUD
Retailer 13$7,360 AUD
Retailer 2$7,383 AUD
Retailer 1$7,545 AUD
Retailer 7$8,105 AUD
Retailer 5$8,336 AUD
Retailer 11$9,853 AUD
Retailer 3$10,471 AUD
Wholesale Diamonds Direct$10,663 AUD

31 data points across 14 retailers

13 retailers$5,885 AUD to $10,663 AUD

A
Cheapest Retailer
-
$5,885 AUD
$4,124 USD
A
Retailer 2
-
$5,952 AUD
SGD 5,637 SGD
View
A
Retailer 3
-
$6,050 AUD
$4,240 USD
View
A
Retailer 4
-
$6,188 AUD
$4,337 USD
View
A
Retailer 5
-
$6,378 AUD
SGD 6,040 SGD
View
A
Retailer 6
-
$6,648 AUD
£3,668 GBP
View
A
Retailer 7
-
$7,360 AUD
$5,158 USD
View
A
Retailer 8
-
$7,383 AUD
$5,174 USD
View
A
Retailer 9
-
$7,545 AUD
€5,036 EUR
View
B+
Retailer 10
-
$8,105 AUD
$5,680 USD
View
B
Retailer 11
-
$9,853 AUD
$6,905 USD
View
B
Retailer 12
-
$10,471 AUD
$7,338 USD
View
Most Expensive
B
Wholesale Diamonds Direct
570704296 · Oct 26
$10,663 AUD
$7,473 USD
View
12 more retailers have this diamond
Prices start from $5,885 AUDSave up to $4,779 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
$5,885 AUD