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Round|Natural|GIA

2.51ct M VS1 Round Natural Diamond

EX • M/VS1 • GIA 1478171738

Certificate GIA 1478171738

Diamond specifications and retailer prices

From $9,868 USD
As of November 6, 2026
Save $6,987 USD (41%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $16,855 USD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 2.51ct natural round diamond

This 2.51ct natural round sits in the two to three carat band, graded M colour (faint-tinted) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by GIA 1478171738. Listed at 7 retailers as of November 5, 2026, with prices from $9,868 to $16,855, a $6,987 spread on the same certified stone. NZ Jewellers lists it at $16,855. At this carat range, natural pricing varies dramatically across retailers, so the cross-retailer spread on this exact stone is your single best indicator of fair price.

The 4Cs

2.51
Carat
M
Color
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle35.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 1478171738
Dimensions8.62 × 8.68 × 5.38 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Needle
Top View
8.62 mm8.68 mm2.51 ctM / VS1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1478171738
Side View
Table 59.0%Crown 35.5°Girdle: Slightly ThickPavilion 41°Culet: NoneDepth 62.2%

Caratlytics Score

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

Price History

Last verified: Nov 6
Current: $16,855 USD|Low: $9,867 USD|High: $16,855 USD|Avg: $12,224 USD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 5, 2026
Retailer 6$9,868 USD
Retailer 4$10,979 USD
Retailer 7$11,335 USD
Retailer 5$11,792 USD
Retailer 2$12,176 USD
Retailer 3$12,434 USD
NZ Jewellers$16,855 USD

20 data points across 7 retailers

7 retailers$9,868 USD to $16,855 USD

A
Cheapest Retailer
-
$9,868 USD
B+
Retailer 2
-
$10,979 USD
View
B+
Retailer 3
-
$11,335 USD
View
B+
Retailer 4
-
$11,792 USD
View
B+
Retailer 5
-
$12,176 USD
View
B+
Retailer 6
-
$12,434 USD
View
Most Expensive
B
NZ Jewellers
07a642f4-5d7c-4ff5-8bfc-90baf1ca771f · Nov 5
$16,855 USD
View
6 more retailers have this diamond
Prices start from $9,868 USDSave up to $6,987 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
2.51ct Round
$9,868 USD