CaratHunter
Plans
Oval|Natural|GIA

1.51ct I SI2 Oval Natural Diamond

VG • I/SI2 • GIA 1423043483

Certificate GIA 1423043483

Diamond specifications and retailer prices

From $11,264 AUD
$7,912 USD
As of November 1, 2026
Save $8,895 AUD (44%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $20,158 AUD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.51ct natural oval diamond

This 1.51ct natural oval sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 1423043483. Listed at 17 retailers as of October 30, 2026, with prices from $11,264 to $20,158, a $8,895 spread on the same certified stone. NZ Jewellers lists it at $20,158. 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
I
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1423043483
Dimensions9.55 × 6.18 × 3.90 mm
L/W Ratio1.55
Top View
9.55 mm6.18 mm1.51 ctI / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1423043483
Side View
Table 66.0%CrownGirdle: THN-VTKPavilionCulet: NoneDepth 63.2%

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 1
Current: $20,158 AUD|Low: $10,777 AUD|High: $20,158 AUD|Avg: $14,757 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 1, 2026
Retailer 6$10,777 AUD
Retailer 10$12,095 AUD
Retailer 11$12,306 AUD
Retailer 9$13,103 AUD
Retailer 5$13,218 AUD
Retailer 7$13,304 AUD
Retailer 4$14,981 AUD
Retailer 8$15,119 AUD
Retailer 3$17,241 AUD
Retailer 2$18,890 AUD
NZ Jewellers$20,158 AUD

40 data points across 11 retailers

17 retailers$11,264 AUD to $20,158 AUD

Retailer 1
-
$10,777 AUD
$7,570 USD
Price last confirmed 14 days ago
B
Retailer 2
-
$11,264 AUD
$7,912 USD
View
B
Retailer 3
-
$11,323 AUD
$7,954 USD
View
B
Retailer 4
-
$11,801 AUD
CA$11,514 CAD
View
B
Retailer 5
-
$12,095 AUD
$8,496 USD
View
B
Retailer 6
-
$12,306 AUD
$8,644 USD
View
B
Retailer 7
-
$13,103 AUD
$9,204 USD
View
B
Retailer 8
-
$13,218 AUD
£7,311 GBP
View
B
Retailer 9
-
$13,304 AUD
$9,345 USD
View
B
Retailer 10
-
$13,914 AUD
$9,774 USD
View
B
Retailer 11
-
$14,307 AUD
$10,050 USD
View
B
Retailer 12
-
$14,307 AUD
$10,050 USD
View
B
Retailer 13
-
$14,777 AUD
$10,380 USD
View
B
Retailer 14
-
$14,981 AUD
€10,022 EUR
View
B
Retailer 15
-
$15,119 AUD
$10,620 USD
View
B
Retailer 16
-
$18,890 AUD
£10,448 GBP
View
Most Expensive
C
NZ Jewellers
7705be8d-1a12-473f-a572-c8bb65c06c3f · Oct 30
$20,158 AUD
$14,160 USD
View
16 more retailers have this diamond
Prices start from $11,264 AUDSave up to $8,895 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 Oval
$11,264 AUD