Oval|Natural|GIA

1.51ct I SI1 Oval Natural Diamond

EX • I/SI1 • GIA 6552615943

Certificate GIA 6552615943

Diamond specifications and retailer prices

From $9,791 NZD
$5,518 USD
As of November 2, 2026
Save $1,519 NZD (13%) vs most expensive(unlock to see where)
29 retailers carry this diamond
Most expensive: $19,047 NZD 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 27, 2026, with a relatively tight 16% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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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B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $19,047 NZD|Low: $6,069 NZD|High: $19,047 NZD|Avg: $10,573 NZD
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
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Retailer 22
Retailer 23
Retailer 24
Retailer 25
Retailer 26
Retailer 27
Retailer 28
Retailer 29
Retailer 30
Retailer 31
Retailer 32
Retailer 33
Retailer 34
Retailer 35
Retailer 36
October 26, 2026
Retailer 30$6,069 NZD
Retailer 27$7,903 NZD
Retailer 25$7,923 NZD
Retailer 26$8,542 NZD
Retailer 34$8,552 NZD
Retailer 24$8,710 NZD
Retailer 35$8,896 NZD
Retailer 17$8,997 NZD
Retailer 2$9,002 NZD
Retailer 6$9,115 NZD
Retailer 20$9,521 NZD
Retailer 14$9,634 NZD
Retailer 18$9,983 NZD
Retailer 21$10,138 NZD
Retailer 12$10,183 NZD
Retailer 3$10,318 NZD
Retailer 8$10,318 NZD
Retailer 15$10,318 NZD
Retailer 10$10,502 NZD
Retailer 7$10,775 NZD
Retailer 22$10,799 NZD
Retailer 31$10,827 NZD
Retailer 13$10,912 NZD
Retailer 23$11,309 NZD
Retailer 11$11,515 NZD
Retailer 32$11,515 NZD
Retailer 19$11,665 NZD
Retailer 36$11,676 NZD
Retailer 33$11,888 NZD
Retailer 16$11,904 NZD
Retailer 28$13,195 NZD
Retailer 29$13,781 NZD
Retailer 5$13,824 NZD
Retailer 9$16,504 NZD
Retailer 4$16,869 NZD
NZ Jewellers$19,047 NZD

23 data points across 36 retailers

29 retailers$9,791 NZD to $11,309 NZD

Retailer 1
-
$8,552 NZD
$4,820 USD
Price last confirmed 12 days ago
Retailer 2
-
$8,710 NZD
$4,909 USD
View
Price last confirmed 7 days ago
Retailer 3
-
$8,896 NZD
$5,014 USD
View
Price last confirmed 12 days ago
Retailer 4
-
$8,997 NZD
$5,071 USD
View
Price last confirmed 13 days ago
Retailer 5
-
$9,002 NZD
$5,074 USD
View
Price last confirmed 7 days ago
Retailer 6
-
$9,115 NZD
$5,137 USD
View
Price last confirmed 12 days ago
Retailer 7
-
$9,228 NZD
$5,201 USD
View
Price last confirmed 14 days ago
Retailer 8
-
$9,634 NZD
$5,430 USD
View
Price last confirmed 12 days ago
B+
Retailer 9
-
$9,791 NZD
$5,518 USD
View
B+
Retailer 10
-
$9,983 NZD
CA$7,815 CAD
View
Retailer 11
-
$10,138 NZD
$5,714 USD
View
Price last confirmed 7 days ago
Retailer 12
-
$10,183 NZD
$5,739 USD
View
Price last confirmed 15 days ago
Retailer 13
-
$10,318 NZD
$5,815 USD
View
Price last confirmed 16 days ago
Retailer 14
-
$10,318 NZD
$5,815 USD
View
Price last confirmed 13 days ago
Retailer 15
-
$10,318 NZD
$5,815 USD
View
Price last confirmed 17 days ago
Retailer 16
-
$10,502 NZD
$5,919 USD
View
Price last confirmed 12 days ago
Retailer 17
-
$10,775 NZD
$6,073 USD
View
Price last confirmed 13 days ago
Retailer 18
-
$10,912 NZD
£4,842 GBP
View
Price last confirmed 11 days ago
B+
Retailer 19
-
$11,309 NZD
$6,374 USD
View
Retailer 20
-
$11,515 NZD
$6,490 USD
View
Price last confirmed 13 days ago
Retailer 21
-
$11,515 NZD
$6,490 USD
View
Price last confirmed 14 days ago
Retailer 22
-
$11,665 NZD
$6,575 USD
View
Price last confirmed 12 days ago
Retailer 23
-
$11,888 NZD
$6,700 USD
View
Price last confirmed 12 days ago
Retailer 24
-
$11,904 NZD
$6,709 USD
View
Price last confirmed 12 days ago
Retailer 25
-
$13,781 NZD
$7,767 USD
View
Price last confirmed 38 days ago
Retailer 26
-
$13,824 NZD
ZAR 125,871 ZAR
View
Price last confirmed 16 days ago
Retailer 27
-
$16,504 NZD
$9,302 USD
View
Price last confirmed 13 days ago
Retailer 28
-
$16,869 NZD
£7,486 GBP
View
Price last confirmed 12 days ago
Most Expensive
NZ Jewellers
4c5ebf8d-add2-4a1c-aa2d-7fa88683f094 · Oct 20
$19,047 NZD
$10,735 USD
View
Price last confirmed 12 days ago
28 more retailers have this diamond
Prices start from $9,791 NZDSave up to $1,519 NZD

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
$9,791 NZD