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Round|Natural|GIA

1.51ct G SI1 Round Natural Diamond

EX • G/SI1 • GIA 2245021465

Certificate GIA 2245021465

Diamond specifications and retailer prices

From $9,534 AUD
HK$52,200 HKD
As of November 1, 2026
Save $8,350 AUD (47%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $17,884 AUD at MOH London · As of November 1, 2026
View at MOH London

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 2245021465. Listed at 19 retailers as of November 1, 2026, with prices from $9,534 to $17,884, a $8,350 spread on the same certified stone. MOH London lists it at $17,884. 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°
OriginNatural
Grading LabGIA
CertificateGIA 2245021465
Dimensions7.30 × 7.33 × 4.59 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Needle
Top View
7.30 mm7.33 mm1.51 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2245021465
Side View
Table 56.0%Crown 35°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $17,884 AUD|Low: $9,534 AUD|High: $18,613 AUD|Avg: $12,593 AUD|-2.6%
MOH London
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 4$9,534 AUD
Retailer 14$9,582 AUD
Retailer 3$9,716 AUD
Retailer 15$9,856 AUD
Retailer 17$10,006 AUD
Retailer 2$10,613 AUD
Retailer 18$10,646 AUD
Retailer 5$10,689 AUD
Retailer 12$11,786 AUD
Retailer 6$11,997 AUD
Retailer 10$12,304 AUD
Retailer 7$12,771 AUD
Retailer 8$12,814 AUD
Retailer 11$13,199 AUD
Retailer 13$13,256 AUD
Retailer 9$13,449 AUD
Retailer 16$15,766 AUD
MOH London$17,884 AUD

29 data points across 18 retailers

19 retailers$9,534 AUD to $17,884 AUD

A
Cheapest Retailer
-
$9,534 AUD
HK$52,200 HKD
A
Retailer 2
-
$9,582 AUD
$6,715 USD
View
A
Retailer 3
-
$9,716 AUD
$6,809 USD
View
A
Retailer 4
-
$9,856 AUD
$6,907 USD
View
A
Retailer 5
-
$10,006 AUD
View
B+
Retailer 6
-
$10,613 AUD
CA$10,331 CAD
View
B+
Retailer 7
-
$10,646 AUD
$7,461 USD
View
Final sale: no returns
B+
Retailer 8
-
$10,689 AUD
$7,491 USD
View
B+
Retailer 9
-
$11,786 AUD
£6,504 GBP
View
B+
Retailer 10
-
$11,997 AUD
$8,408 USD
View
Retailer 11
-
$12,304 AUD
View
Price last confirmed 9 days ago
B+
Retailer 12
-
$12,771 AUD
$8,950 USD
View
B+
Retailer 13
-
$12,814 AUD
$8,980 USD
View
B+
Retailer 14
-
$13,199 AUD
$9,250 USD
View
B+
Retailer 15
-
$13,256 AUD
€8,848 EUR
View
B+
Retailer 16
-
$13,449 AUD
$9,426 USD
View
Retailer 17
-
$14,379 AUD
$10,077 USD
View
Price last confirmed 19 days ago
B
Retailer 18
-
$15,766 AUD
ZAR 178,494 ZAR
View
Most Expensive
B
MOH London
C7551D8A6 · Nov 1
$17,884 AUD
£9,869 GBP
View
18 more retailers have this diamond
Prices start from $9,534 AUDSave up to $8,350 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.

A
1.51ct Round
$9,534 AUD