Oval|Natural|GIA

1.51ct I SI1 Oval Natural Diamond

EX • I/SI1 • GIA 6552615943

Certificate GIA 6552615943

Diamond specifications and retailer prices

From $6,988 AUD
$4,909 USD
As of October 26, 2026
Save $2,086 AUD (23%) vs most expensive(unlock to see where)
29 retailers carry this diamond
Most expensive: $15,282 AUD at NZ Jewellers · As of October 20, 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 6552615943. Listed at 29 retailers as of October 26, 2026, with a 30% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
SymmetryExcellent
FluorescenceNone
Crown angle40.12°
Pavilion angle38.97°
OriginNatural
Grading LabGIA
CertificateGIA 6552615943
Dimensions8.90 × 6.39 × 3.98 mm
L/W Ratio1.39
Culet sizeNone
Top View
8.90 mm6.39 mm1.51 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6552615943
Side View
Table 58.0%Crown 40.12°Girdle: MED-THKPavilion 38.97°Culet: NoneDepth 62.2%

Caratlytics Score

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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 26
Current: $15,282 AUD|Low: $4,870 AUD|High: $15,282 AUD|Avg: $8,483 AUD
NZ Jewellers
Retailer 2
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Retailer 24
Retailer 25
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Retailer 28
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Retailer 30
Retailer 31
Retailer 32
Retailer 33
Retailer 34
Retailer 35
Retailer 36
October 26, 2026
Retailer 30$4,870 AUD
Retailer 27$6,341 AUD
Retailer 25$6,357 AUD
Retailer 26$6,854 AUD
Retailer 34$6,862 AUD
Retailer 24$6,988 AUD
Retailer 35$7,138 AUD
Retailer 17$7,219 AUD
Retailer 2$7,223 AUD
Retailer 6$7,313 AUD
Retailer 20$7,639 AUD
Retailer 14$7,730 AUD
Retailer 18$8,010 AUD
Retailer 21$8,134 AUD
Retailer 12$8,171 AUD
Retailer 3$8,278 AUD
Retailer 8$8,278 AUD
Retailer 15$8,278 AUD
Retailer 10$8,426 AUD
Retailer 7$8,646 AUD
Retailer 22$8,664 AUD
Retailer 31$8,687 AUD
Retailer 13$8,755 AUD
Retailer 23$9,074 AUD
Retailer 11$9,239 AUD
Retailer 32$9,239 AUD
Retailer 19$9,360 AUD
Retailer 36$9,368 AUD
Retailer 33$9,538 AUD
Retailer 16$9,551 AUD
Retailer 28$10,587 AUD
Retailer 29$11,057 AUD
Retailer 5$11,092 AUD
Retailer 9$13,242 AUD
Retailer 4$13,534 AUD
NZ Jewellers$15,282 AUD

23 data points across 36 retailers

29 retailers$6,988 AUD to $9,074 AUD

Retailer 1
-
$6,862 AUD
$4,820 USD
Price last confirmed 11 days ago
A
Retailer 2
-
$6,988 AUD
$4,909 USD
View
Retailer 3
-
$7,138 AUD
$5,014 USD
View
Price last confirmed 12 days ago
Retailer 4
-
$7,219 AUD
$5,071 USD
View
Price last confirmed 13 days ago
Retailer 5
-
$7,223 AUD
$5,074 USD
View
Price last confirmed 7 days ago
Retailer 6
-
$7,313 AUD
$5,137 USD
View
Price last confirmed 12 days ago
Retailer 7
-
$7,404 AUD
$5,201 USD
View
Price last confirmed 14 days ago
Retailer 8
-
$7,730 AUD
$5,430 USD
View
Price last confirmed 12 days ago
B+
Retailer 9
-
$7,855 AUD
$5,518 USD
View
B+
Retailer 10
-
$8,010 AUD
CA$7,815 CAD
View
B+
Retailer 11
-
$8,134 AUD
$5,714 USD
View
Retailer 12
-
$8,171 AUD
$5,739 USD
View
Price last confirmed 15 days ago
Retailer 13
-
$8,278 AUD
$5,815 USD
View
Price last confirmed 16 days ago
Retailer 14
-
$8,278 AUD
$5,815 USD
View
Price last confirmed 13 days ago
Retailer 15
-
$8,278 AUD
$5,815 USD
View
Price last confirmed 17 days ago
Retailer 16
-
$8,426 AUD
$5,919 USD
View
Price last confirmed 12 days ago
Retailer 17
-
$8,646 AUD
$6,073 USD
View
Price last confirmed 13 days ago
Retailer 18
-
$8,755 AUD
£4,842 GBP
View
Price last confirmed 11 days ago
B+
Retailer 19
-
$9,074 AUD
$6,374 USD
View
Retailer 20
-
$9,239 AUD
$6,490 USD
View
Price last confirmed 13 days ago
Retailer 21
-
$9,239 AUD
$6,490 USD
View
Price last confirmed 14 days ago
Retailer 22
-
$9,360 AUD
$6,575 USD
View
Price last confirmed 12 days ago
Retailer 23
-
$9,538 AUD
$6,700 USD
View
Price last confirmed 12 days ago
Retailer 24
-
$9,551 AUD
$6,709 USD
View
Price last confirmed 12 days ago
Retailer 25
-
$11,057 AUD
$7,767 USD
View
Price last confirmed 38 days ago
Retailer 26
-
$11,092 AUD
ZAR 125,871 ZAR
View
Price last confirmed 15 days ago
Retailer 27
-
$13,242 AUD
$9,302 USD
View
Price last confirmed 13 days ago
Retailer 28
-
$13,534 AUD
£7,486 GBP
View
Price last confirmed 12 days ago
Most Expensive
NZ Jewellers
4c5ebf8d-add2-4a1c-aa2d-7fa88683f094 · Oct 20
$15,282 AUD
$10,735 USD
View
Price last confirmed 12 days ago
28 more retailers have this diamond
Prices start from $6,988 AUDSave up to $2,086 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
$6,988 AUD