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Oval|Natural|GIA

1.51ct I SI2 Oval Natural Diamond

ID • I/SI2 • GIA 1555553685

Certificate GIA 1555553685

Diamond specifications and retailer prices

From $4,353 USD
Save $5,039 USD (54%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $9,392 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 1555553685. Listed at 16 retailers, with prices from $4,353 to $9,392 at NZ Jewellers, a $5,039 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
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Crown angle37.83°
OriginNatural
Grading LabGIA
CertificateGIA 1555553685
Dimensions9.39 × 6.15 × 3.91 mm
L/W Ratio1.53
Girdle conditionVery Thick
Key to symbols
Twinning Wisp, Crystal, Feather, Indented Natural, Needle, Natural
Top View
9.39 mm6.15 mm1.51 ctI / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1555553685
Side View
Table 63.0%Crown 37.83°Girdle: MED-VTKPavilionCulet: NoneDepth 63.6%

Caratlytics Score

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

Price History

Last verified: Sep 30
Current: $9,392 USD|Low: $4,290 USD|High: $10,061 USD|Avg: $5,702 USD|-3.8%
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
October 1, 2026
Retailer 11$4,353 USD
Retailer 6$4,510 USD
Retailer 8$4,880 USD
Retailer 13$5,038 USD
Retailer 5$5,087 USD
Retailer 14$5,087 USD
Retailer 15$5,087 USD
Retailer 16$5,347 USD
Retailer 4$5,470 USD
Retailer 2$5,700 USD
Retailer 12$5,700 USD
Retailer 3$5,870 USD
Retailer 7$6,110 USD
Retailer 9$6,235 USD
Retailer 10$9,051 USD
NZ Jewellers$9,392 USD

27 data points across 16 retailers

16 retailers$4,353 USD to $9,392 USD

A
Cheapest Retailer
-
$4,353 USD
B+
Retailer 2
-
$4,510 USD
View
B+
Retailer 3
-
$4,880 USD
View
Price last confirmed 31 days ago
B+
Retailer 4
-
$5,038 USD
View
B+
Retailer 5
-
$5,087 USD
View
B+
Retailer 6
-
$5,087 USD
View
B+
Retailer 7
-
$5,087 USD
View
B+
Retailer 8
-
$5,347 USD
View
B+
Retailer 9
-
$5,477 USD
£4,312 GBP
View
B+
Retailer 10
-
$5,700 USD
View
B+
Retailer 11
-
$5,700 USD
View
B+
Retailer 12
-
$5,870 USD
View
B+
Retailer 13
-
$6,110 USD
View
Price last confirmed 14 days ago
B+
Retailer 14
-
$6,235 USD
€5,938 EUR
View
B
Retailer 15
-
$9,051 USD
£7,127 GBP
View
Most Expensive
B
NZ Jewellers
0053aa63-0ec4-47af-838b-8ec66f6357bd · Sep 29
$9,392 USD
View
15 more retailers have this diamond
Prices start from $4,353 USDSave up to $5,039 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.

A
1.51ct Oval
$4,353 USD