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Oval|Natural|GIA

1.51ct G SI2 Oval Natural Diamond

EX • G/SI2 • GIA 5556995187

Certificate GIA 5556995187

Diamond specifications and retailer prices

From $5,157 AUD
HK$28,300 HKD
As of October 29, 2026
Save $6,959 AUD (57%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $12,116 AUD at NZ Jewellers · As of October 27, 2026
View at NZ Jewellers

About this 1.51ct natural oval diamond

This 1.51ct natural oval 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 stated by the retailer rather than the lab and certified by GIA 5556995187. Listed at 21 retailers as of October 27, 2026, with prices from $5,157 to $12,116, a $6,959 spread on the same certified stone. NZ Jewellers lists it at $12,116. 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 (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle37.8°
Pavilion angle38.6°
OriginNatural
Grading LabGIA
CertificateGIA 5556995187
Dimensions8.60 × 6.39 × 4.22 mm
L/W Ratio1.35
Girdle conditionPolished
Culet sizeNone
Top View
8.60 mm6.39 mm1.51 ctG / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 5556995187
Side View
Table 59.0%Crown 37.8°Girdle: MED-VTKPavilion 38.6°Culet: NoneDepth 65.9%

Caratlytics Score

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

Price History

Last verified: Oct 29
Current: $12,116 AUD|Low: $5,157 AUD|High: $12,478 AUD|Avg: $7,108 AUD|-2.9%
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
Retailer 19
Retailer 20
Retailer 21
October 29, 2026
Retailer 5$5,157 AUD
Retailer 19$5,336 AUD
Retailer 14$5,410 AUD
Retailer 10$5,543 AUD
Retailer 11$5,815 AUD
Retailer 7$6,301 AUD
Retailer 20$6,301 AUD
Retailer 21$6,301 AUD
Retailer 2$6,487 AUD
Retailer 9$6,667 AUD
Retailer 16$6,777 AUD
Retailer 13$6,915 AUD
Retailer 3$7,090 AUD
Retailer 8$7,090 AUD
Retailer 12$7,269 AUD
Retailer 4$7,317 AUD
Retailer 18$7,417 AUD
Retailer 15$7,679 AUD
Retailer 6$8,089 AUD
Retailer 17$11,135 AUD
NZ Jewellers$12,116 AUD

25 data points across 21 retailers

21 retailers$5,157 AUD to $12,116 AUD

A
Cheapest Retailer
-
$5,157 AUD
HK$28,300 HKD
A
Retailer 2
-
$5,336 AUD
$3,748 USD
View
A
Retailer 3
-
$5,410 AUD
$3,800 USD
View
A
Retailer 4
-
$5,543 AUD
$3,894 USD
View
A
Retailer 5
-
$5,815 AUD
$4,085 USD
View
Final sale: no returns
A
Retailer 6
-
$6,301 AUD
$4,426 USD
View
A
Retailer 7
-
$6,301 AUD
$4,426 USD
View
A
Retailer 8
-
$6,301 AUD
$4,426 USD
View
A
Retailer 9
-
$6,487 AUD
$4,557 USD
View
A
Retailer 10
-
$6,667 AUD
$4,683 USD
View
A
Retailer 11
-
$6,777 AUD
£3,748 GBP
View
A
Retailer 12
-
$6,915 AUD
£3,825 GBP
View
A
Retailer 13
-
$7,090 AUD
$4,980 USD
View
A
Retailer 14
-
$7,090 AUD
$4,980 USD
View
A
Retailer 15
-
$7,269 AUD
$5,106 USD
View
A
Retailer 16
-
$7,317 AUD
$5,140 USD
View
A
Retailer 17
-
$7,417 AUD
€4,962 EUR
View
A
Retailer 18
-
$7,679 AUD
$5,394 USD
View
A
Retailer 19
-
$8,089 AUD
$5,682 USD
View
B+
Retailer 20
-
$11,135 AUD
£6,159 GBP
View
Most Expensive
B
NZ Jewellers
72cea195-2876-4593-b6f0-6e66d96eb4c4 · Oct 27
$12,116 AUD
$8,511 USD
View
20 more retailers have this diamond
Prices start from $5,157 AUDSave up to $6,959 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 Oval
$5,157 AUD