Oval|Natural|GIA

1.51ct F SI1 Oval Natural Diamond

ID • F/SI1 • GIA 5231846819

Certificate GIA 5231846819

Diamond specifications and retailer prices

From $11,357 NZD
$6,390 USD
As of October 28, 2026
Save $8,953 NZD (44%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $20,310 NZD at MOH London · As of October 29, 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 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 5231846819. Listed at 22 retailers as of October 28, 2026, with prices from $11,357 to $20,310, a $8,953 spread on the same certified stone. MOH London lists it at $20,310. 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
SymmetryExcellent
FluorescenceFaint
Pavilion angle38.6°
OriginNatural
Grading LabGIA
CertificateGIA 5231846819
Dimensions8.93 × 6.37 × 4.02 mm
L/W Ratio1.40
Top View
8.93 mm6.37 mm1.51 ctF / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 5231846819
Side View
Table 56.0%CrownGirdle: MED-THKPavilion 38.6°Culet: NoneDepth 63.1%

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 28
Current: $20,310 NZD|Low: $10,442 NZD|High: $22,776 NZD|Avg: $13,521 NZD|+6.3%
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
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Retailer 22
Retailer 23
Retailer 24
Retailer 25
October 30, 2026
Retailer 11$10,442 NZD
Retailer 7$11,122 NZD
Retailer 12$11,265 NZD
Retailer 10$11,313 NZD
Retailer 22$11,357 NZD
Retailer 17$11,588 NZD
Retailer 6$11,673 NZD
Retailer 8$11,739 NZD
Retailer 3$11,901 NZD
Retailer 2$12,173 NZD
Retailer 14$12,281 NZD
Retailer 24$12,560 NZD
Retailer 9$12,629 NZD
Retailer 5$12,989 NZD
Retailer 19$13,525 NZD
Retailer 13$13,781 NZD
Retailer 20$14,009 NZD
Retailer 23$14,645 NZD
Retailer 25$14,645 NZD
Retailer 4$15,125 NZD
Retailer 21$15,125 NZD
Retailer 18$15,142 NZD
Retailer 16$16,443 NZD
MOH London$20,310 NZD
Retailer 15$22,533 NZD

21 data points across 25 retailers

22 retailers$11,357 NZD to $20,310 NZD

Retailer 1
-
$11,122 NZD
$6,258 USD
Price last confirmed 12 days ago
Retailer 2
-
$11,313 NZD
$6,365 USD
View
Price last confirmed 12 days ago
A
Retailer 3
-
$11,357 NZD
$6,390 USD
View
Retailer 4
-
$11,588 NZD
$6,520 USD
View
Price last confirmed 18 days ago
Retailer 5
-
$11,673 NZD
€6,255 EUR
View
Price last confirmed 12 days ago
Retailer 6
-
$11,739 NZD
$6,605 USD
View
Price last confirmed 12 days ago
A
Retailer 7
-
$11,901 NZD
$6,696 USD
View
B+
Retailer 8
-
$12,173 NZD
CA$9,513 CAD
View
Retailer 9
-
$12,281 NZD
$6,910 USD
View
Price last confirmed 12 days ago
B+
Retailer 10
-
$12,560 NZD
$7,067 USD
View
Retailer 11
-
$12,917 NZD
$7,268 USD
View
Price last confirmed 12 days ago
Retailer 12
-
$12,989 NZD
A$11,243 AUD
View
Price last confirmed 12 days ago
Retailer 13
-
$13,058 NZD
$7,347 USD
View
Price last confirmed 26 days ago
B+
Retailer 14
-
$13,525 NZD
$7,610 USD
View
B+
Retailer 15
-
$13,781 NZD
£6,105 GBP
View
B+
Retailer 16
-
$14,009 NZD
$7,882 USD
View
B+
Retailer 17
-
$14,645 NZD
$8,240 USD
View
B+
Retailer 18
-
$14,645 NZD
$8,240 USD
View
B+
Retailer 19
-
$15,125 NZD
$8,510 USD
View
B+
Retailer 20
-
$15,125 NZD
€8,105 EUR
View
Retailer 21
-
$15,142 NZD
$8,519 USD
View
Price last confirmed 17 days ago
Most Expensive
B
MOH London
456809E73 · Oct 29
$20,310 NZD
£8,998 GBP
View
21 more retailers have this diamond
Prices start from $11,357 NZDSave up to $8,953 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.

A
1.51ct Oval
$11,357 NZD