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Radiant|Natural|GIA

1.51ct E SI1 Radiant Natural Diamond

VG • E/SI1 • GIA 2221285699

Certificate GIA 2221285699

Diamond specifications and retailer prices

From $13,477 AUD
As of October 30, 2026
Save $3,350 AUD (20%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $16,827 AUD at Zales · As of October 30, 2026
View at Zales

About this 1.51ct natural radiant diamond

This 1.51ct natural radiant sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 2221285699. Listed at 6 retailers as of October 30, 2026, with prices from $13,477 to $16,827, a $3,350 spread on the same certified stone. Zales lists it at $16,827. 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
E
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 2221285699
Dimensions7.30 × 5.84 × 4.00 mm
L/W Ratio1.25
Top View
7.30 mm5.84 mm1.51 ctE / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 2221285699
Side View
Table 71.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 68.5%

Caratlytics Score

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B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $16,678 AUD|Low: $12,582 AUD|High: $16,779 AUD|Avg: $14,925 AUD|+1.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
October 30, 2026
Retailer 4$13,689 AUD
Retailer 2$13,840 AUD
Retailer 3$15,949 AUD
Retailer 1$16,678 AUD

34 data points across 4 retailers

6 retailers$13,477 AUD to $16,827 AUD

B
Cheapest Retailer
-
$13,477 AUD
B
Retailer 2
-
$13,689 AUD
$9,616 USD
View
B
Retailer 3
-
$13,840 AUD
$9,722 USD
View
Final sale: no returns
B
Retailer 4
-
$15,949 AUD
$11,203 USD
View
B
Retailer 5
-
$16,678 AUD
£9,225 GBP
View
Most Expensive
B
Zales
517207766 · Oct 30
$16,827 AUD
$11,820 USD
View
5 more retailers have this diamond
Prices start from $13,477 AUDSave up to $3,350 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.

B
1.51ct Radiant
$13,477 AUD