Oval|Natural|GIA

1.51ct F SI1 Oval Natural Diamond

ID • F/SI1 • GIA 6531369634

Certificate GIA 6531369634

Diamond specifications and retailer prices

From $12,353 AUD
$8,657 USD
As of November 2, 2026
Save $9,955 AUD (45%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $22,308 AUD at NZ Jewellers · As of November 2, 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 F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6531369634. Listed at 16 retailers as of November 2, 2026, with prices from $12,353 to $22,308, a $9,955 spread on the same certified stone. NZ Jewellers lists it at $22,308. 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
F
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6531369634
Dimensions9.60 × 6.16 × 3.93 mm
L/W Ratio1.56
Top View
9.60 mm6.16 mm1.51 ctF / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6531369634
Side View
Table 61.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 63.7%

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 2
Current: $22,308 AUD|Low: $12,207 AUD|High: $22,308 AUD|Avg: $16,072 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 3, 2026
Retailer 3$12,353 AUD
Retailer 12$13,263 AUD
Retailer 7$13,386 AUD
Retailer 14$13,497 AUD
Retailer 5$14,500 AUD
Retailer 2$14,506 AUD
Retailer 15$14,568 AUD
Retailer 8$14,724 AUD
Retailer 10$14,975 AUD
Retailer 9$15,348 AUD
Retailer 6$16,732 AUD
Retailer 11$16,861 AUD
Retailer 13$19,664 AUD
Retailer 4$20,905 AUD
NZ Jewellers$22,308 AUD

40 data points across 15 retailers

16 retailers$12,353 AUD to $22,308 AUD

B+
Cheapest Retailer
-
$12,353 AUD
$8,657 USD
B+
Retailer 2
-
$12,532 AUD
$8,783 USD
View
B+
Retailer 3
-
$13,263 AUD
$9,295 USD
View
B+
Retailer 4
-
$13,497 AUD
$9,459 USD
View
B
Retailer 5
-
$14,274 AUD
$10,003 USD
View
B
Retailer 6
-
$14,500 AUD
$10,162 USD
View
B+
Retailer 7
-
$14,506 AUD
£8,005 GBP
View
Retailer 8
-
$14,568 AUD
View
Our latest check could not confirm this price
B
Retailer 9
-
$14,724 AUD
$10,319 USD
View
B
Retailer 10
-
$14,975 AUD
£8,264 GBP
View
B
Retailer 11
-
$15,348 AUD
$10,756 USD
View
B
Retailer 12
-
$16,732 AUD
$11,726 USD
View
B
Retailer 13
-
$16,861 AUD
€11,254 EUR
View
B
Retailer 14
-
$19,664 AUD
ZAR 222,636 ZAR
View
B
Retailer 15
-
$20,905 AUD
£11,536 GBP
View
Most Expensive
B
NZ Jewellers
ef70bf24-57fa-4a5e-9bde-f717cf668600 · Nov 2
$22,308 AUD
$15,634 USD
View
15 more retailers have this diamond
Prices start from $12,353 AUDSave up to $9,955 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
$12,353 AUD