CaratHunter
Plans
Round|Natural|GIA

1.51ct I SI2 Round Natural Diamond

EX • I/SI2 • GIA 2436486853

Certificate GIA 2436486853

Diamond specifications and retailer prices

From $11,492 AUD
As of November 1, 2026
Save $10,011 AUD (47%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $21,503 AUD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.51ct natural round diamond

This 1.51ct natural round sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2436486853. Listed at 17 retailers as of November 1, 2026, with prices from $11,492 to $21,503, a $10,011 spread on the same certified stone. NZ Jewellers lists it at $21,503. 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
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 2436486853
Dimensions7.36 × 7.32 × 4.54 mm
L/W Ratio1.01
Top View
7.36 mm7.32 mm1.51 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2436486853
Side View
Table 55.0%Crown 34°Girdle: THN-THKPavilion 40.6°Culet: NoneDepth 61.8%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $21,503 AUD|Low: $11,492 AUD|High: $21,503 AUD|Avg: $15,733 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 5$11,492 AUD
Retailer 7$12,902 AUD
Retailer 2$13,876 AUD
Retailer 9$13,978 AUD
Retailer 6$14,192 AUD
Retailer 3$15,389 AUD
Retailer 8$16,128 AUD
Retailer 4$20,095 AUD
NZ Jewellers$21,503 AUD

42 data points across 9 retailers

17 retailers$11,492 AUD to $21,503 AUD

B+
Cheapest Retailer
-
$11,492 AUD
B+
Retailer 2
-
$11,721 AUD
View
B
Retailer 3
-
$12,081 AUD
View
B
Retailer 4
-
$12,501 AUD
View
Retailer 5
-
$12,902 AUD
View
Price last confirmed 8 days ago
B
Retailer 6
-
$13,876 AUD
View
B
Retailer 7
-
$13,978 AUD
View
B
Retailer 8
-
$14,192 AUD
View
B
Retailer 9
-
$14,864 AUD
View
B
Retailer 10
-
$15,199 AUD
View
B
Retailer 11
-
$15,199 AUD
View
B
Retailer 12
-
$15,389 AUD
View
B
Retailer 13
-
$15,714 AUD
View
B
Retailer 14
-
$16,128 AUD
View
Retailer 15
-
$16,981 AUD
View
Price last confirmed 14 days ago
B
Retailer 16
-
$20,095 AUD
View
Most Expensive
B
NZ Jewellers
0c32f121-0fbc-460c-a3f1-404ed955b21d · Nov 5
$21,503 AUD
$15,053 USD
View
16 more retailers have this diamond
Prices start from $11,492 AUDSave up to $10,011 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 Round
$11,492 AUD