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Round|Natural|GIA

1.51ct G SI2 Round Natural Diamond

EX • G/SI2 • GIA 6565171682

Certificate GIA 6565171682

Diamond specifications and retailer prices

From $5,194 AUD
SGD 4,936 SGD
As of October 29, 2026
Save $5,573 AUD (52%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $10,767 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 G colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6565171682. Listed at 7 retailers as of October 26, 2026, with prices from $5,194 to $10,767, a $5,573 spread on the same certified stone. Wholesale Diamonds Direct lists it at $10,767. 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
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 6565171682
Dimensions7.30 × 4.58 × 4.58 mm
L/W Ratio1.59
Culet sizeNone
Top View
7.30 mm4.58 mm1.51 ctG / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6565171682
Side View
Table 57.0%Crown 36°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.6%

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 29
Current: $6,246 AUD|Low: $5,194 AUD|High: $12,654 AUD|Avg: $8,060 AUD|-13.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Wholesale Diamonds Direct
October 28, 2026
Retailer 3$5,194 AUD
Retailer 1$6,246 AUD
Retailer 5$6,440 AUD
Retailer 4$7,443 AUD
Retailer 2$7,584 AUD
Retailer 6$7,837 AUD
Wholesale Diamonds Direct$10,767 AUD

36 data points across 7 retailers

7 retailers$5,194 AUD to $10,767 AUD

A
Cheapest Retailer
-
$5,194 AUD
SGD 4,936 SGD
A
Retailer 2
-
$6,246 AUD
$4,393 USD
View
A
Retailer 3
-
$6,440 AUD
SGD 6,120 SGD
View
A
Retailer 4
-
$7,443 AUD
$5,235 USD
View
A
Retailer 5
-
$7,584 AUD
€5,080 EUR
View
A
Retailer 6
-
$7,837 AUD
£4,340 GBP
View
Most Expensive
B+
Wholesale Diamonds Direct
378293572 · Oct 26
$10,767 AUD
$7,572 USD
View
6 more retailers have this diamond
Prices start from $5,194 AUDSave up to $5,573 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
$5,194 AUD