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Round|Natural|GIA

1.51ct G SI1 Round Natural Diamond

EX • G/SI1 • GIA 1567314878

Certificate GIA 1567314878

Diamond specifications and retailer prices

From $10,179 AUD
$7,150 USD
As of November 2, 2026
Save $13,174 AUD (56%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $23,353 AUD at NZ Jewellers · As of October 30, 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1567314878. Listed at 19 retailers as of October 30, 2026, with prices from $10,179 to $23,353, a $13,174 spread on the same certified stone. NZ Jewellers lists it at $23,353. 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
G
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 1567314878
Dimensions7.33 × 7.37 × 4.55 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Cloud, Crystal, Feather, Needle
Top View
7.33 mm7.37 mm1.51 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1567314878
Side View
Table 59.0%Crown 35°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 61.9%

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 2
Current: $23,353 AUD|Low: $10,179 AUD|High: $23,353 AUD|Avg: $13,749 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
November 2, 2026
Retailer 6$10,179 AUD
Retailer 8$10,223 AUD
Retailer 16$10,414 AUD
Retailer 9$10,832 AUD
Retailer 5$10,932 AUD
Retailer 3$11,617 AUD
Retailer 18$11,676 AUD
Retailer 4$12,649 AUD
Retailer 12$12,844 AUD
Retailer 17$12,844 AUD
Retailer 15$12,902 AUD
Retailer 11$13,975 AUD
Retailer 7$14,595 AUD
Retailer 2$14,823 AUD
Retailer 10$15,372 AUD
Retailer 14$17,153 AUD
Retailer 13$19,459 AUD
NZ Jewellers$23,353 AUD

26 data points across 18 retailers

19 retailers$10,179 AUD to $23,353 AUD

B+
Cheapest Retailer
-
$10,179 AUD
$7,150 USD
B+
Retailer 2
-
$10,223 AUD
HK$56,100 HKD
View
B+
Retailer 3
-
$10,414 AUD
$7,315 USD
View
B+
Retailer 4
-
$10,548 AUD
View
B+
Retailer 5
-
$10,832 AUD
$7,609 USD
View
Final sale: no returns
B+
Retailer 6
-
$10,932 AUD
$7,679 USD
View
B+
Retailer 7
-
$11,617 AUD
$8,160 USD
View
B+
Retailer 8
-
$11,676 AUD
$8,202 USD
View
B+
Retailer 9
-
$12,649 AUD
$8,885 USD
View
B+
Retailer 10
-
$12,844 AUD
£7,104 GBP
View
B
Retailer 11
-
$12,844 AUD
$9,022 USD
View
Retailer 12
-
$12,902 AUD
View
Price last confirmed 9 days ago
B+
Retailer 13
-
$13,975 AUD
€9,349 EUR
View
B
Retailer 14
-
$14,595 AUD
$10,252 USD
View
B+
Retailer 15
-
$14,823 AUD
£8,199 GBP
View
Retailer 16
-
$15,372 AUD
$10,798 USD
View
Price last confirmed 19 days ago
B
Retailer 17
-
$17,153 AUD
ZAR 194,655 ZAR
View
B
Retailer 18
-
$19,459 AUD
£10,763 GBP
View
Most Expensive
B
NZ Jewellers
a883de12-2672-4f63-9446-a9a4284d9292 · Oct 30
$23,353 AUD
$16,404 USD
View
18 more retailers have this diamond
Prices start from $10,179 AUDSave up to $13,174 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
$10,179 AUD