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Radiant|Natural|GIA

1.51ct H SI1 Radiant Natural Diamond

VG • H/SI1 • GIA 2205672627

Certificate GIA 2205672627

Diamond specifications and retailer prices

From $13,072 AUD
As of November 4, 2026
Save $10,409 AUD (44%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $23,481 AUD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.51ct natural radiant diamond

This 1.51ct natural radiant sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 2205672627. Listed at 17 retailers as of November 4, 2026, with prices from $13,072 to $23,481, a $10,409 spread on the same certified stone. NZ Jewellers lists it at $23,481. 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
H
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryGood
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 2205672627
Dimensions6.70 × 6.13 × 4.25 mm
L/W Ratio1.09
Culet sizeNone
Cert comments
Surface graining is not shown.
Top View
6.70 mm6.13 mm1.51 ctH / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryGood
FluorescenceMedium
CertificateGIA 2205672627
Side View
Table 72.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 69.3%

Caratlytics Score

How it works →
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: Nov 4
Current: $15,274 AUD|Low: $12,895 AUD|High: $22,268 AUD|Avg: $16,682 AUD|-3.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 7, 2026
Retailer 7$12,895 AUD
Retailer 8$14,088 AUD
Retailer 1$15,274 AUD
Retailer 6$15,504 AUD
Retailer 2$15,788 AUD
Retailer 3$17,650 AUD
Retailer 4$20,555 AUD
Retailer 5$21,943 AUD

36 data points across 8 retailers

17 retailers$13,072 AUD to $23,481 AUD

Retailer 1
-
$12,895 AUD
Price last confirmed 20 days ago
B
Retailer 2
-
$13,072 AUD
View
B
Retailer 3
-
$13,950 AUD
View
Retailer 4
-
$14,088 AUD
View
Price last confirmed 9 days ago
B
Retailer 5
-
$14,088 AUD
View
Final sale: no returns
B
Retailer 6
-
$15,263 AUD
View
B
Retailer 7
-
$15,274 AUD
View
B
Retailer 8
-
$15,497 AUD
View
Retailer 9
-
$15,504 AUD
View
Price last confirmed 15 days ago
B
Retailer 10
-
$15,788 AUD
View
C
Retailer 11
-
$17,434 AUD
View
C
Retailer 12
-
$17,610 AUD
View
B
Retailer 13
-
$17,650 AUD
View
Retailer 14
-
$18,540 AUD
View
Price last confirmed 15 days ago
C
Retailer 15
-
$20,555 AUD
View
B
Retailer 16
-
$21,943 AUD
View
Most Expensive
C
NZ Jewellers
07877fde-150f-4dc3-9cb0-cc00ebea3972 · Nov 5
$23,481 AUD
$16,134 USD
View
16 more retailers have this diamond
Prices start from $13,072 AUDSave up to $10,409 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
$13,072 AUD