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Oval|Natural|GIA

1.51ct F SI1 Oval Natural Diamond

EX • F/SI1 • GIA 1545696258

Certificate GIA 1545696258

Diamond specifications and retailer prices

From $10,358 NZD
₹555,060 INR
As of November 2, 2026
Save $2,827 NZD (21%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $13,186 NZD at Blue Nile · As of October 29, 2026
View at Blue Nile

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 1545696258. Listed at 8 retailers as of October 29, 2026, with prices from $10,358 to $13,186, a $2,827 spread on the same certified stone. Blue Nile lists it at $13,186. 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
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1545696258
Dimensions8.55 × 6.50 × 4.22 mm
L/W Ratio1.32
Culet sizeNone
Key to symbols
Crystal, Feather, Cloud, Needle, Natural
Top View
8.55 mm6.50 mm1.51 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1545696258
Side View
Table 61.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 64.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $13,186 NZD|Low: $10,159 NZD|High: $13,836 NZD|Avg: $11,749 NZD|-4.7%
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 2, 2026
Retailer 2$10,358 NZD
Retailer 4$10,836 NZD
Retailer 5$11,297 NZD
Retailer 6$11,659 NZD
Retailer 3$11,823 NZD
Retailer 7$11,898 NZD
Blue Nile$13,186 NZD

46 data points across 7 retailers

8 retailers$10,358 NZD to $13,186 NZD

A
Cheapest Retailer
-
$10,358 NZD
₹555,060 INR
A
Retailer 2
-
$10,836 NZD
SGD 8,239 SGD
View
A
Retailer 3
-
$11,297 NZD
$6,356 USD
View
B+
Retailer 4
-
$11,659 NZD
$6,560 USD
View
Final sale: no returns
A
Retailer 5
-
$11,823 NZD
£5,238 GBP
View
B+
Retailer 6
-
$11,898 NZD
MYR 27,268 MYR
View
B+
Retailer 7
-
$13,064 NZD
A$11,308 AUD
View
Most Expensive
B+
Blue Nile
28840668 · Oct 29
$13,186 NZD
$7,419 USD
View
7 more retailers have this diamond
Prices start from $10,358 NZDSave up to $2,827 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
$10,358 NZD