Round|Natural|GIA

2.50ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 5516808668

Certificate GIA 5516808668

Diamond specifications and retailer prices

From $10,787 USD
As of November 4, 2026
Save $5,949 USD (36%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $17,734 USD at NZ Jewellers · As of October 6, 2026
View at NZ Jewellers

About this 2.5ct natural round diamond

This 2.5ct natural round sits in the two to three carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 5516808668. Listed at 10 retailers as of November 4, 2026, with a 55% 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

2.50
Carat
K
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 5516808668
Dimensions8.60 × 8.53 × 5.39 mm
L/W Ratio1.01
Star length50%
Top View
8.60 mm8.53 mm2.50 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5516808668
Side View
Table 58.0%Crown 36°GirdlePavilion 40.8°Culet: NoneDepth 62.9%

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 4
Current: $12,295 USD|Low: $9,703 USD|High: $16,870 USD|Avg: $12,313 USD|-0.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 8$9,703 USD
Retailer 7$10,787 USD
Retailer 10$10,798 USD
Retailer 9$10,905 USD
Retailer 6$11,527 USD
Retailer 1$12,295 USD
Retailer 4$13,433 USD
Retailer 2$14,581 USD
Retailer 3$14,753 USD
Retailer 5$16,736 USD

23 data points across 10 retailers

10 retailers$10,787 USD to $16,736 USD

Retailer 1
-
$9,703 USD
Price last confirmed 9 days ago
A
Retailer 2
-
$10,787 USD
View
Retailer 3
-
$11,527 USD
View
Price last confirmed 29 days ago
Retailer 4
-
$11,704 USD
View
Price last confirmed 38 days ago
A
Retailer 5
-
$12,295 USD
View
Retailer 6
-
$13,300 USD
View
Price last confirmed 33 days ago
B+
Retailer 7
-
$13,433 USD
View
B+
Retailer 8
-
$14,753 USD
View
B
Retailer 9
-
$16,736 USD
View
Most Expensive
NZ Jewellers
054bfbd2-230a-4ad5-b6b0-bc8dae8d540a · Oct 6
$17,734 USD
View
Price last confirmed 31 days ago
9 more retailers have this diamond
Prices start from $10,787 USDSave up to $5,949 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
2.50ct Round
$10,787 USD