Oval|Natural|GIA

2.51ct K SI2 Oval Natural Diamond

ID • K/SI2 • GIA 2554859851

Certificate GIA 2554859851

Diamond specifications and retailer prices

From $21,232 NZD

As of November 4, 2026

Save $14,413 NZD (40%) vs most expensive(unlock to see where)

19 retailers carry this diamond

Most expensive: $35,645 NZD at MOH London · As of November 4, 2026

View at MOH London

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 2554859851. Listed at 19 retailers as of November 4, 2026, with prices from $21,232 to $35,645, a $14,413 spread on the same certified stone. MOH London lists it at $35,645. 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

Colour

SI2

Clarity

Ideal

Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal

PolishExcellent

SymmetryExcellent

FluorescenceNone

OriginNatural

Grading LabGIA

CertificateGIA 2554859851

Dimensions10.66 × 7.43 × 4.67 mm

L/W Ratio1.43

Culet sizeNone

Key to symbols

Twinning Wisp, Feather, Cloud, Crystal, Needle, Indented Natural

View GIA Report →View Loupe360 Video →

Top View

OriginNatural

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateGIA 2554859851

Side View

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: $35,645 NZD|Low: $16,313 NZD|High: $36,170 NZD|Avg: $24,170 NZD|-1.3%

MOH London

Retailer 2

Retailer 3

Retailer 4

Retailer 5

Retailer 6

Retailer 7

Retailer 8

Retailer 9

Retailer 10

Retailer 11

Retailer 12

Retailer 13

November 6, 2026

Retailer 5$16,313 NZD

Retailer 3$16,578 NZD

Retailer 4$18,182 NZD

Retailer 12$21,232 NZD

Retailer 11$23,075 NZD

Retailer 6$24,183 NZD

Retailer 13$24,427 NZD

Retailer 9$26,436 NZD

Retailer 2$26,909 NZD

Retailer 8$27,636 NZD

Retailer 10$28,393 NZD

Retailer 7$28,825 NZD

MOH London$35,645 NZD

33 data points across 13 retailers

19 retailers$21,232 NZD to $35,645 NZD

Retailer 1

$16,578 NZD

Price last confirmed 56 days ago

B+

Retailer 2

$21,232 NZD

View

Retailer 3

$22,884 NZD

View

Price last confirmed 29 days ago

B+

Retailer 4

$23,075 NZD

View

B+

Retailer 5

$24,183 NZD

View

Retailer 6

$24,410 NZD

View

Price last confirmed 38 days ago

B+

Retailer 7

$24,427 NZD

View

Retailer 8

$24,791 NZD

View

Price last confirmed 29 days ago

Retailer 9

$24,791 NZD

View

Price last confirmed 43 days ago

Retailer 10

$25,745 NZD

View

Price last confirmed 38 days ago

Retailer 11

$25,745 NZD

View

Price last confirmed 43 days ago

B+

Retailer 12

$26,436 NZD

View

B+

Retailer 13

$26,909 NZD

View

Retailer 14

$27,636 NZD

View

Retailer 15

$28,393 NZD

View

Retailer 16

$28,825 NZD

View

Retailer 17

$32,420 NZD

View

Price last confirmed 42 days ago

Retailer 18

$32,420 NZD

View

Price last confirmed 38 days ago

Most Expensive

MOH London

DB46F1EEE · Nov 4

$35,645 NZD

£15,559 GBP

View

18 more retailers have this diamond

Prices start from $21,232 NZDSave up to $14,413 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.

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B+

2.51ct Oval

$21,232 NZD