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Round|Natural|GIA

1.51ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 2245018446

Certificate GIA 2245018446

Diamond specifications and retailer prices

From $4,763 AUD
SGD 4,521 SGD
As of October 31, 2026
Save $3,837 AUD (45%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $8,600 AUD at Wholesale Diamonds Direct · As of October 26, 2026
View at Wholesale Diamonds Direct

About this 1.51ct natural round diamond

This 1.51ct natural round sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2245018446. Listed at 9 retailers as of October 26, 2026, with prices from $4,763 to $8,600, a $3,837 spread on the same certified stone. Wholesale Diamonds Direct lists it at $8,600. 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
H
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 2245018446
Dimensions7.27 × 4.58 × 4.58 mm
L/W Ratio1.59
Culet sizeNone
Top View
7.27 mm4.58 mm1.51 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2245018446
Side View
Table 58.0%Crown 36°Girdle: THN-STKPavilion 41.2°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: Oct 31
Current: $6,224 AUD|Low: $4,763 AUD|High: $9,190 AUD|Avg: $6,195 AUD|-2.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Wholesale Diamonds Direct
November 1, 2026
Retailer 5$4,763 AUD
Retailer 3$4,997 AUD
Retailer 7$5,105 AUD
Retailer 2$5,416 AUD
Retailer 6$6,035 AUD
Retailer 1$6,224 AUD
Retailer 4$6,355 AUD
Wholesale Diamonds Direct$8,600 AUD

45 data points across 8 retailers

9 retailers$4,763 AUD to $8,600 AUD

A
Cheapest Retailer
-
$4,763 AUD
SGD 4,521 SGD
A
Retailer 2
-
$4,997 AUD
$3,510 USD
View
A
Retailer 3
-
$5,105 AUD
SGD 4,846 SGD
View
A
Retailer 4
-
$5,416 AUD
£2,996 GBP
View
A
Retailer 5
-
$6,035 AUD
$4,239 USD
View
A
Retailer 6
-
$6,224 AUD
€4,164 EUR
View
A
Retailer 7
-
$6,355 AUD
£3,515 GBP
View
B+
Retailer 8
-
$8,105 AUD
$5,693 USD
View
Most Expensive
B+
Wholesale Diamonds Direct
472895024 · Oct 26
$8,600 AUD
$6,041 USD
View
8 more retailers have this diamond
Prices start from $4,763 AUDSave up to $3,837 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
$4,763 AUD