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Round|Natural|GIA

2.51ct K VS1 Round Natural Diamond

EX • K/VS1 • GIA 6502421991

Certificate GIA 6502421991

Diamond specifications and retailer prices

From $21,259 AUD
As of November 6, 2026
Save $14,824 AUD (41%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $36,083 AUD at MOH London · As of November 4, 2026
View at MOH London

About this 2.51ct natural round diamond

This 2.51ct natural round sits in the two to three carat band, graded K colour (faint-tinted) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by GIA 6502421991. Listed at 7 retailers as of November 4, 2026, with prices from $21,259 to $36,083, a $14,824 spread on the same certified stone. MOH London lists it at $36,083. 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
K
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 6502421991
Dimensions8.64 × 8.69 × 5.41 mm
L/W Ratio1.01
Top View
8.64 mm8.69 mm2.51 ctK / VS1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6502421991
Side View
Table 58.0%Crown 35°Girdle: Slightly ThickPavilion 41.2°Culet: NoneDepth 62.4%

Caratlytics Score

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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: $36,083 AUD|Low: $21,259 AUD|High: $36,616 AUD|Avg: $27,768 AUD|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 6$21,259 AUD
Retailer 3$23,677 AUD
Retailer 5$24,145 AUD
Retailer 4$28,013 AUD
Retailer 2$31,811 AUD
MOH London$36,083 AUD

42 data points across 6 retailers

7 retailers$21,259 AUD to $36,083 AUD

A
Cheapest Retailer
-
$21,259 AUD
A
Retailer 2
-
$23,677 AUD
View
B+
Retailer 3
-
$24,145 AUD
View
B+
Retailer 4
-
$28,013 AUD
View
B
Retailer 5
-
$31,811 AUD
View
B
Retailer 6
-
$32,818 AUD
View
Most Expensive
B
MOH London
13F37865C · Nov 4
$36,083 AUD
£19,889 GBP
View
6 more retailers have this diamond
Prices start from $21,259 AUDSave up to $14,824 AUD

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
$21,259 AUD