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Oval|Natural|GIA

1.51ct I SI1 Oval Natural Diamond

EX • I/SI1 • GIA 5526668826

Certificate GIA 5526668826

Diamond specifications and retailer prices

From $9,693 AUD
$6,809 USD
As of November 1, 2026
Save $11,012 AUD (53%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $20,705 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 5526668826. Listed at 20 retailers as of October 30, 2026, with prices from $9,693 to $20,705, a $11,012 spread on the same certified stone. NZ Jewellers lists it at $20,705. 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 5526668826
Dimensions9.41 × 6.18 × 3.99 mm
L/W Ratio1.52
Top View
9.41 mm6.18 mm1.51 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 5526668826
Side View
Table 61.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 64.6%

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: $20,705 AUD|Low: $9,490 AUD|High: $20,705 AUD|Avg: $12,903 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$9,693 AUD
Retailer 14$10,342 AUD
Retailer 13$10,352 AUD
Retailer 3$10,533 AUD
Retailer 7$11,215 AUD
Retailer 4$11,387 AUD
Retailer 8$11,441 AUD
Retailer 5$11,457 AUD
Retailer 12$11,722 AUD
Retailer 11$12,513 AUD
Retailer 6$12,941 AUD
Retailer 2$13,525 AUD
Retailer 10$15,209 AUD
Retailer 9$17,253 AUD
NZ Jewellers$20,705 AUD

42 data points across 15 retailers

20 retailers$9,693 AUD to $20,705 AUD

B+
Cheapest Retailer
-
$9,693 AUD
$6,809 USD
B
Retailer 2
-
$10,342 AUD
$7,265 USD
View
B
Retailer 3
-
$10,352 AUD
$7,272 USD
View
B
Retailer 4
-
$10,352 AUD
$7,272 USD
View
Final sale: no returns
B
Retailer 5
-
$10,533 AUD
$7,399 USD
View
B
Retailer 6
-
$11,215 AUD
$7,878 USD
View
B
Retailer 7
-
$11,387 AUD
$7,999 USD
View
B+
Retailer 8
-
$11,441 AUD
£6,328 GBP
View
B
Retailer 9
-
$11,457 AUD
$8,048 USD
View
Retailer 10
-
$11,722 AUD
View
Price last confirmed 11 days ago
B
Retailer 11
-
$12,343 AUD
$8,670 USD
View
B
Retailer 12
-
$12,343 AUD
$8,670 USD
View
B
Retailer 13
-
$12,420 AUD
$8,724 USD
View
B
Retailer 14
-
$12,513 AUD
$8,790 USD
View
B
Retailer 15
-
$12,755 AUD
$8,960 USD
View
B
Retailer 16
-
$12,941 AUD
$9,090 USD
View
B
Retailer 17
-
$13,525 AUD
€9,048 EUR
View
B
Retailer 18
-
$15,209 AUD
ZAR 172,588 ZAR
View
B
Retailer 19
-
$17,253 AUD
£9,543 GBP
View
Most Expensive
B
NZ Jewellers
46340976-d7d4-470f-9b56-6b02ff4253f8 · Oct 30
$20,705 AUD
$14,544 USD
View
19 more retailers have this diamond
Prices start from $9,693 AUDSave up to $11,012 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
$9,693 AUD