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Oval|Natural|GIA

1.51ct I SI1 Oval Natural Diamond

EX • I/SI1 • GIA 7541897480

Certificate GIA 7541897480

Diamond specifications and retailer prices

From $10,699 NZD
$6,020 USD
As of November 1, 2026
Save $8,173 NZD (43%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $18,872 NZD at MOH London · As of November 2, 2026
View at MOH London

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 7541897480. Listed at 20 retailers as of November 1, 2026, with prices from $10,699 to $18,872, a $8,173 spread on the same certified stone. MOH London lists it at $18,872. 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
FluorescenceFaint
Crown angle39.48°
Pavilion angle39.93°
OriginNatural
Grading LabGIA
CertificateGIA 7541897480
Dimensions8.94 × 6.30 × 4.01 mm
L/W Ratio1.42
Girdle conditionVery Thick
Key to symbols
Twinning Wisp, Crystal, Feather, Indented Natural
Top View
8.94 mm6.30 mm1.51 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 7541897480
Side View
Table 57.0%Crown 39.48°Girdle: MediumPavilion 39.93°Culet: 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 1
Current: $18,872 NZD|Low: $9,763 NZD|High: $18,974 NZD|Avg: $12,320 NZD|+15.2%
MOH London
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
November 2, 2026
Retailer 8$9,763 NZD
Retailer 15$10,699 NZD
Retailer 4$11,366 NZD
Retailer 5$11,419 NZD
Retailer 16$12,044 NZD
Retailer 13$12,065 NZD
Retailer 9$12,377 NZD
Retailer 7$12,425 NZD
Retailer 12$12,768 NZD
Retailer 10$12,850 NZD
Retailer 3$13,057 NZD
Retailer 6$13,787 NZD
Retailer 17$13,859 NZD
Retailer 2$14,156 NZD
Retailer 11$14,795 NZD
Retailer 14$16,639 NZD
MOH London$18,872 NZD

26 data points across 17 retailers

20 retailers$10,699 NZD to $18,872 NZD

B+
Cheapest Retailer
-
$10,699 NZD
$6,020 USD
Retailer 2
-
$11,105 NZD
$6,248 USD
View
Price last confirmed 41 days ago
Retailer 3
-
$11,105 NZD
$6,248 USD
View
Price last confirmed 26 days ago
Retailer 4
-
$11,105 NZD
$6,248 USD
View
Price last confirmed 34 days ago
B+
Retailer 5
-
$11,366 NZD
$6,395 USD
View
B+
Retailer 6
-
$11,419 NZD
$6,425 USD
View
B+
Retailer 7
-
$12,044 NZD
CA$9,412 CAD
View
B+
Retailer 8
-
$12,065 NZD
$6,789 USD
View
B+
Retailer 9
-
$12,425 NZD
$6,991 USD
View
B
Retailer 10
-
$12,768 NZD
£5,657 GBP
View
B
Retailer 11
-
$12,850 NZD
£5,693 GBP
View
Retailer 12
-
$13,057 NZD
A$11,302 AUD
View
Price last confirmed 11 days ago
B+
Retailer 13
-
$13,787 NZD
$7,758 USD
View
B
Retailer 14
-
$13,859 NZD
$7,798 USD
View
B
Retailer 15
-
$14,156 NZD
$7,965 USD
View
B
Retailer 16
-
$14,795 NZD
€7,928 EUR
View
B
Retailer 17
-
$16,639 NZD
ZAR 151,241 ZAR
View
Retailer 18
-
$18,573 NZD
$10,450 USD
View
Price last confirmed 43 days ago
Retailer 19
-
$18,573 NZD
$10,450 USD
View
Price last confirmed 27 days ago
Most Expensive
B
MOH London
D841CE379 · Nov 2
$18,872 NZD
£8,361 GBP
View
19 more retailers have this diamond
Prices start from $10,699 NZDSave up to $8,173 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
$10,699 NZD