Oval|Natural|GIA

1.51ct I SI2 Oval Natural Diamond

EX • I/SI2 • GIA 6555458202

Certificate GIA 6555458202

Diamond specifications and retailer prices

From $5,578 USD
Save $6,305 USD (53%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $11,883 USD at NZ Jewellers
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 SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6555458202. Listed at 17 retailers, with prices from $5,578 to $11,883 at NZ Jewellers, a $6,305 spread on the same certified stone. 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
Color
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.3°
Pavilion angle36.4°
OriginNatural
Grading LabGIA
CertificateGIA 6555458202
Dimensions9.12 × 6.38 × 3.97 mm
L/W Ratio1.43
Culet sizeNone
Key to symbols
Twinning Wisp, Feather, Crystal, Needle
Top View
9.12 mm6.38 mm1.51 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6555458202
Side View
Table 60.0%Crown 38.3°Girdle: STK-THKPavilion 36.4°Culet: NoneDepth 62.2%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0-100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 1
Current: $11,883 USD|Low: $5,578 USD|High: $11,883 USD|Avg: $6,902 USD
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
September 30, 2026
Retailer 4$5,578 USD
Retailer 13$5,905 USD
Retailer 8$6,011 USD
Retailer 5$6,137 USD
Retailer 9$6,171 USD
Retailer 7$6,196 USD
Retailer 16$6,558 USD
Retailer 11$6,842 USD
Retailer 3$7,010 USD
Retailer 2$7,014 USD
Retailer 17$7,105 USD
Retailer 10$7,214 USD
Retailer 6$7,266 USD
Retailer 14$7,392 USD
Retailer 15$8,198 USD
Retailer 12$10,593 USD
NZ Jewellers$11,883 USD

39 data points across 17 retailers

17 retailers$5,578 USD to $11,883 USD

B+
Cheapest Retailer
-
$5,578 USD
B+
Retailer 2
-
$5,905 USD
View
B+
Retailer 3
-
$5,922 USD
SGD 8,003 SGD
View
B+
Retailer 4
-
$6,011 USD
View
B+
Retailer 5
-
$6,137 USD
View
Price last confirmed 32 days ago
B+
Retailer 6
-
$6,196 USD
View
B+
Retailer 7
-
$6,558 USD
View
B
Retailer 8
-
$6,857 USD
£5,399 GBP
View
B
Retailer 9
-
$7,010 USD
View
B
Retailer 10
-
$7,014 USD
£5,523 GBP
View
B
Retailer 11
-
$7,105 USD
View
B
Retailer 12
-
$7,214 USD
View
B
Retailer 13
-
$7,266 USD
View
B
Retailer 14
-
$7,392 USD
View
B
Retailer 15
-
$8,198 USD
View
B
Retailer 16
-
$10,593 USD
£8,341 GBP
View
Most Expensive
C
NZ Jewellers
c5c50e83-530b-46ac-8e4a-559ec960663a · Sep 29
$11,883 USD
View
16 more retailers have this diamond
Prices start from $5,578 USDSave up to $6,305 USD

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.

B+
1.51ct Oval
$5,578 USD