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Oval|Natural|GIA

2.51ct M SI2 Oval Natural Diamond

EX • M/SI2 • GIA 2235718826

Certificate GIA 2235718826

Diamond specifications and retailer prices

From $12,730 NZD
As of November 4, 2026
Save $14,464 NZD (53%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $27,194 NZD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 2.51ct natural oval diamond

This 2.51ct natural oval sits in the two to three carat band, graded M 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 2235718826. Listed at 8 retailers as of November 4, 2026, with prices from $12,730 to $27,194, a $14,464 spread on the same certified stone. NZ Jewellers lists it at $27,194. 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
M
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle38.93°
Pavilion angle39.2°
OriginNatural
Grading LabGIA
CertificateGIA 2235718826
Dimensions10.79 × 7.58 × 4.71 mm
L/W Ratio1.42
Culet sizeNone
Top View
10.79 mm7.58 mm2.51 ctM / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 2235718826
Side View
Table 58.0%Crown 38.93°Girdle: STK-THKPavilion 39.2°Culet: NoneDepth 62.2%

Caratlytics Score

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

Price History

Last verified: Nov 4
Current: $17,666 NZD|Low: $10,506 NZD|High: $18,761 NZD|Avg: $15,110 NZD|+2.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 3$10,506 NZD
Retailer 7$12,730 NZD
Retailer 5$13,598 NZD
Retailer 9$13,883 NZD
Retailer 11$14,725 NZD
Retailer 6$14,731 NZD
Retailer 4$14,956 NZD
Retailer 2$15,593 NZD
Retailer 8$16,996 NZD
Retailer 1$17,666 NZD
Retailer 10$18,241 NZD

21 data points across 11 retailers

8 retailers$12,730 NZD to $27,194 NZD

B+
Cheapest Retailer
-
$12,730 NZD
Retailer 2
-
$13,598 NZD
View
Price last confirmed 8 days ago
B+
Retailer 3
-
$14,725 NZD
View
B+
Retailer 4
-
$14,731 NZD
View
B+
Retailer 5
-
$14,956 NZD
View
B
Retailer 6
-
$16,996 NZD
View
B
Retailer 7
-
$17,666 NZD
View
Most Expensive
C
NZ Jewellers
b00eedae-f838-4c6e-9876-41119c406dd2 · Nov 5
$27,194 NZD
$15,075 USD
View
7 more retailers have this diamond
Prices start from $12,730 NZDSave up to $14,464 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.

B+
2.51ct Oval
$12,730 NZD