Oval|Natural|GIA

1.51ct K SI2 Oval Natural Diamond

EX • K/SI2 • GIA 2245085602

Certificate GIA 2245085602

Diamond specifications and retailer prices

From $1,907 USD
As of November 6, 2026
Save $3,684 USD (66%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $5,591 USD at NZ Jewellers · As of November 5, 2026
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 K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2245085602. Listed at 12 retailers as of November 5, 2026, with prices from $1,907 to $5,591, a $3,684 spread on the same certified stone. NZ Jewellers lists it at $5,591. 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
K
Color
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Pavilion angle38.75°
OriginNatural
Grading LabGIA
CertificateGIA 2245085602
Dimensions9.01 × 6.34 × 4.10 mm
L/W Ratio1.42
Key to symbols
Crystal, Cloud
Top View
9.01 mm6.34 mm1.51 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 2245085602
Side View
Table 63.0%CrownGirdle: STK-THKPavilion 38.75°Culet: NoneDepth 64.6%

Caratlytics Score

How it works →
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: Nov 6
Current: $5,591 USD|Low: $1,907 USD|High: $5,947 USD|Avg: $3,362 USD|-6.0%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 2$1,907 USD
Retailer 10$2,465 USD
Retailer 5$2,579 USD
Retailer 6$2,652 USD
Retailer 4$2,674 USD
Retailer 12$2,777 USD
Retailer 3$2,916 USD
Retailer 8$3,162 USD
Retailer 7$3,290 USD
Retailer 11$4,063 USD
Retailer 9$4,685 USD
NZ Jewellers$5,591 USD

24 data points across 12 retailers

12 retailers$1,907 USD to $5,591 USD

A
Cheapest Retailer
-
$1,907 USD
A
Retailer 2
-
$2,465 USD
View
A
Retailer 3
-
$2,579 USD
View
A
Retailer 4
-
$2,652 USD
View
A
Retailer 5
-
$2,674 USD
View
A
Retailer 6
-
$2,777 USD
View
A
Retailer 7
-
$2,916 USD
View
A
Retailer 8
-
$3,162 USD
View
A
Retailer 9
-
$3,290 USD
View
B+
Retailer 10
-
$4,063 USD
View
B+
Retailer 11
-
$4,685 USD
View
Most Expensive
B
NZ Jewellers
06407ec2-9e67-4908-8adb-4ab5f11a71bc · Nov 5
$5,591 USD
View
11 more retailers have this diamond
Prices start from $1,907 USDSave up to $3,684 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. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.51ct Oval
$1,907 USD