Round|Natural|GIA

2.51ct K SI2 Round Natural Diamond

EX • K/SI2 • GIA 5546047512

Certificate GIA 5546047512

Diamond specifications and retailer prices

From $7,545 USD
As of November 4, 2026
Save $5,847 USD (44%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $14,250 USD at NZ Jewellers · As of September 28, 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 K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 5546047512. Listed at 14 retailers as of November 4, 2026, with a 77% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5546047512
Dimensions8.60 × 8.65 × 5.41 mm
L/W Ratio1.01
Top View
8.60 mm8.65 mm2.51 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5546047512
Side View
Table 59.0%CrownGirdlePavilionCulet: NDepth 62.7%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 4
Current: $8,847 USD|Low: $7,545 USD|High: $13,514 USD|Avg: $9,854 USD|-4.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 5$7,545 USD
Retailer 7$7,560 USD
Retailer 8$8,520 USD
Retailer 6$8,587 USD
Retailer 1$8,847 USD
Retailer 4$9,685 USD
Retailer 2$10,447 USD
Retailer 9$11,254 USD
Retailer 3$13,392 USD

37 data points across 9 retailers

14 retailers$7,545 USD to $13,392 USD

A
Cheapest Retailer
-
$7,545 USD
A
Retailer 2
-
$7,560 USD
View
A
Retailer 3
-
$8,520 USD
View
Retailer 4
-
$8,550 USD
View
Price last confirmed 29 days ago
A
Retailer 5
-
$8,587 USD
View
A
Retailer 6
-
$8,847 USD
View
Retailer 7
-
$9,262 USD
View
Price last confirmed 29 days ago
Retailer 8
-
$9,405 USD
View
Price last confirmed 38 days ago
A
Retailer 9
-
$9,685 USD
View
A
Retailer 10
-
$10,447 USD
View
Retailer 11
-
$10,687 USD
View
Price last confirmed 38 days ago
Retailer 12
-
$11,254 USD
View
Price last confirmed 14 days ago
B+
Retailer 13
-
$13,392 USD
View
Most Expensive
NZ Jewellers
29289aa4-f6d7-4c00-8cfe-0327b2998af7 · Sep 28
$14,250 USD
View
Price last confirmed 39 days ago
13 more retailers have this diamond
Prices start from $7,545 USDSave up to $5,847 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
$7,545 USD