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Oval|Natural|GIA

2.51ct K SI2 Oval Natural Diamond

EX • K/SI2 • GIA 6551518379

Certificate GIA 6551518379

Diamond specifications and retailer prices

From $11,096 NZD
As of November 5, 2026
Save $5,980 NZD (35%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $17,076 NZD at The Diamond Guys · As of November 6, 2026
View at The Diamond Guys

About this 2.51ct natural oval diamond

This 2.51ct natural oval sits in the two to three 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 6551518379. Listed at 10 retailers as of November 5, 2026, with prices from $11,096 to $17,076, a $5,980 spread on the same certified stone. The Diamond Guys lists it at $17,076. 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

2.51
Carat
K
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.54°
Pavilion angle39.08°
OriginNatural
Grading LabGIA
CertificateGIA 6551518379
Dimensions10.67 × 7.64 × 4.76 mm
L/W Ratio1.40
Culet sizeNone
Top View
10.67 mm7.64 mm2.51 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6551518379
Side View
Table 60.0%Crown 39.54°Girdle: MED-THKPavilion 39.08°Culet: NoneDepth 62.4%

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 5
Current: $15,272 NZD|Low: $11,034 NZD|High: $20,079 NZD|Avg: $15,171 NZD|-9.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 3$11,096 NZD
Retailer 8$12,018 NZD
Retailer 4$12,712 NZD
Retailer 10$13,150 NZD
Retailer 9$13,212 NZD
Retailer 6$14,976 NZD
Retailer 7$15,095 NZD
Retailer 1$15,272 NZD
Retailer 5$15,503 NZD
Retailer 2$20,079 NZD

31 data points across 10 retailers

10 retailers$11,096 NZD to $17,076 NZD

A
Cheapest Retailer
-
$11,096 NZD
A
Retailer 2
-
$12,018 NZD
View
A
Retailer 3
-
$12,712 NZD
View
A
Retailer 4
-
$13,150 NZD
View
A
Retailer 5
-
$13,212 NZD
View
A
Retailer 6
-
$14,976 NZD
View
A
Retailer 7
-
$15,095 NZD
View
A
Retailer 8
-
$15,272 NZD
View
A
Retailer 9
-
$15,503 NZD
View
Most Expensive
B+
The Diamond Guys
1963437036 · Nov 6
$17,076 NZD
$9,466 USD
View
9 more retailers have this diamond
Prices start from $11,096 NZDSave up to $5,980 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
2.51ct Oval
$11,096 NZD