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Oval|Natural|GIA

1.51ct I SI1 Oval Natural Diamond

EX • I/SI1 • GIA 2316765230

Certificate GIA 2316765230

Diamond specifications and retailer prices

From $8,542 AUD
$6,000 USD
As of October 31, 2026
Save $10,686 AUD (56%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $19,227 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 I 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 2316765230. Listed at 22 retailers as of October 30, 2026, with prices from $8,542 to $19,227, a $10,686 spread on the same certified stone. NZ Jewellers lists it at $19,227. 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
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2316765230
Dimensions9.00 × 6.65 × 4.02 mm
L/W Ratio1.35
Top View
9.00 mm6.65 mm1.51 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2316765230
Side View
Table 59.0%CrownGirdle: VTN-MEDPavilionCulet: NoneDepth 60.4%

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: Oct 31
Current: $19,227 AUD|Low: $8,542 AUD|High: $19,227 AUD|Avg: $12,099 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
November 2, 2026
Retailer 11$8,542 AUD
Retailer 9$9,178 AUD
Retailer 4$9,614 AUD
Retailer 3$10,415 AUD
Retailer 10$10,575 AUD
Retailer 5$10,843 AUD
Retailer 8$11,015 AUD
Retailer 12$12,017 AUD
Retailer 2$12,556 AUD
Retailer 6$14,122 AUD
Retailer 7$16,107 AUD
NZ Jewellers$19,227 AUD

44 data points across 12 retailers

22 retailers$8,542 AUD to $19,227 AUD

B+
Cheapest Retailer
-
$8,542 AUD
$6,000 USD
B+
Retailer 2
-
$8,909 AUD
$6,258 USD
View
B+
Retailer 3
-
$9,083 AUD
$6,380 USD
View
B+
Retailer 4
-
$9,178 AUD
$6,447 USD
View
Final sale: no returns
B+
Retailer 5
-
$9,214 AUD
$6,473 USD
View
B+
Retailer 6
-
$9,556 AUD
CA$9,323 CAD
View
B+
Retailer 7
-
$9,614 AUD
$6,753 USD
View
B+
Retailer 8
-
$9,631 AUD
$6,765 USD
View
B+
Retailer 9
-
$9,693 AUD
$6,809 USD
View
B
Retailer 10
-
$10,236 AUD
$7,190 USD
View
B
Retailer 11
-
$10,415 AUD
$7,316 USD
View
B
Retailer 12
-
$10,575 AUD
$7,428 USD
View
B
Retailer 13
-
$10,617 AUD
$7,458 USD
View
B+
Retailer 14
-
$10,843 AUD
£5,997 GBP
View
B+
Retailer 15
-
$10,997 AUD
$7,725 USD
View
Retailer 16
-
$11,015 AUD
View
Price last confirmed 11 days ago
B
Retailer 17
-
$12,017 AUD
$8,441 USD
View
B
Retailer 18
-
$12,556 AUD
€8,400 EUR
View
B
Retailer 19
-
$12,666 AUD
$8,897 USD
View
B
Retailer 20
-
$14,122 AUD
ZAR 160,262 ZAR
View
B
Retailer 21
-
$16,107 AUD
£8,909 GBP
View
Most Expensive
B
NZ Jewellers
7b5bc6cf-00be-4a75-8a6e-4a63f09f1019 · Oct 30
$19,227 AUD
$13,506 USD
View
21 more retailers have this diamond
Prices start from $8,542 AUDSave up to $10,686 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
$8,542 AUD