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Round|Natural|GIA

2.51ct K SI2 Round Natural Diamond

EX • K/SI2 • GIA 5242069331

Certificate GIA 5242069331

Diamond specifications and retailer prices

From $10,926 USD
As of November 3, 2026
Save $5,506 USD (34%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $16,432 USD at Diamonds Direct · As of November 1, 2026
View at Diamonds Direct

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 5242069331. Listed at 13 retailers as of November 1, 2026, with prices from $10,926 to $16,432, a $5,506 spread on the same certified stone. Diamonds Direct lists it at $16,432. 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
Crown angle34.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 5242069331
Dimensions8.63 × 8.67 × 5.43 mm
L/W Ratio1.00
Culet sizeNone
Top View
8.63 mm8.67 mm2.51 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5242069331
Side View
Table 55.0%Crown 34.5°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 62.8%

Caratlytics Score

How it works →
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 3
Current: $16,432 USD|Low: $10,926 USD|High: $17,327 USD|Avg: $13,518 USD|-5.2%
Diamonds Direct
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 5, 2026
Retailer 6$10,926 USD
Retailer 8$11,795 USD
Retailer 7$11,914 USD
Retailer 10$12,035 USD
Retailer 11$12,099 USD
Retailer 2$12,134 USD
Retailer 13$12,323 USD
Retailer 12$12,450 USD
Retailer 3$14,118 USD
Retailer 9$14,196 USD
Retailer 4$14,211 USD
Retailer 5$14,683 USD
Diamonds Direct$16,432 USD

30 data points across 13 retailers

13 retailers$10,926 USD to $16,432 USD

A
Cheapest Retailer
-
$10,926 USD
A
Retailer 2
-
$11,795 USD
View
A
Retailer 3
-
$11,914 USD
View
A
Retailer 4
-
$12,035 USD
View
A
Retailer 5
-
$12,099 USD
View
A
Retailer 6
-
$12,134 USD
View
A
Retailer 7
-
$12,323 USD
View
A
Retailer 8
-
$12,450 USD
View
B+
Retailer 9
-
$14,118 USD
View
B+
Retailer 10
-
$14,196 USD
View
B+
Retailer 11
-
$14,211 USD
View
Retailer 12
-
$14,683 USD
View
Price last confirmed 11 days ago
Most Expensive
B+
Diamonds Direct
1120578 · Nov 1
$16,432 USD
View
12 more retailers have this diamond
Prices start from $10,926 USDSave up to $5,506 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
$10,926 USD