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Oval|Natural|GIA

1.51ct G SI1 Oval Natural Diamond

EX • G/SI1 • GIA 6555496656

Certificate GIA 6555496656

Diamond specifications and retailer prices

From $10,930 AUD
$7,678 USD
As of November 1, 2026
Save $11,793 AUD (52%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $22,724 AUD at NZ Jewellers · As of October 30, 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 SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6555496656. Listed at 21 retailers as of October 30, 2026, with prices from $10,930 to $22,724, a $11,793 spread on the same certified stone. NZ Jewellers lists it at $22,724. 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 (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle37.5°
Pavilion angle37.7°
OriginNatural
Grading LabGIA
CertificateGIA 6555496656
Dimensions9.18 × 6.40 × 4.01 mm
L/W Ratio1.43
Culet sizeNone
Key to symbols
Crystal, Cloud, Feather, Needle
Top View
9.18 mm6.40 mm1.51 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6555496656
Side View
Table 62.0%Crown 37.5°Girdle: THN-THKPavilion 37.7°Culet: NoneDepth 62.5%

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 1
Current: $22,724 AUD|Low: $11,061 AUD|High: $22,724 AUD|Avg: $14,133 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
November 2, 2026
Retailer 15$11,061 AUD
Retailer 3$11,468 AUD
Retailer 7$12,214 AUD
Retailer 4$12,540 AUD
Retailer 11$12,540 AUD
Retailer 14$12,547 AUD
Retailer 2$12,578 AUD
Retailer 5$12,957 AUD
Retailer 13$13,585 AUD
Retailer 12$13,795 AUD
Retailer 6$14,034 AUD
Retailer 10$15,677 AUD
Retailer 9$16,691 AUD
Retailer 8$18,935 AUD
NZ Jewellers$22,724 AUD

46 data points across 15 retailers

21 retailers$10,930 AUD to $22,724 AUD

B+
Cheapest Retailer
-
$10,930 AUD
$7,678 USD
B+
Retailer 2
-
$11,061 AUD
$7,770 USD
View
B+
Retailer 3
-
$11,468 AUD
SGD 10,886 SGD
View
B+
Retailer 4
-
$11,742 AUD
$8,248 USD
View
B
Retailer 5
-
$12,214 AUD
$8,580 USD
View
B
Retailer 6
-
$12,449 AUD
$8,745 USD
View
B
Retailer 7
-
$12,540 AUD
$8,809 USD
View
Final sale: no returns
B
Retailer 8
-
$12,540 AUD
$8,809 USD
View
Retailer 9
-
$12,547 AUD
View
Price last confirmed 9 days ago
B+
Retailer 10
-
$12,578 AUD
£6,957 GBP
View
B
Retailer 11
-
$13,400 AUD
$9,412 USD
View
B
Retailer 12
-
$13,585 AUD
$9,543 USD
View
Retailer 13
-
$13,585 AUD
$9,543 USD
View
Price last confirmed 7 days ago
B
Retailer 14
-
$13,795 AUD
$9,690 USD
View
B
Retailer 15
-
$13,890 AUD
$9,757 USD
View
B
Retailer 16
-
$14,034 AUD
$9,858 USD
View
Retailer 17
-
$15,677 AUD
$11,012 USD
View
Price last confirmed 62 days ago
B
Retailer 18
-
$15,677 AUD
$11,012 USD
View
B
Retailer 19
-
$16,691 AUD
ZAR 189,411 ZAR
View
B
Retailer 20
-
$18,935 AUD
£10,473 GBP
View
Most Expensive
B
NZ Jewellers
5d7088cb-e287-4cbf-91e0-5155794ec581 · Oct 30
$22,724 AUD
$15,962 USD
View
20 more retailers have this diamond
Prices start from $10,930 AUDSave up to $11,793 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 Oval
$10,930 AUD