Round|Natural|GIA

2.50ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 2556771555

Certificate GIA 2556771555

Diamond specifications and retailer prices

From $15,107 USD
As of October 30, 2026
Save $4,685 USD (24%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $23,373 USD at NZ Jewellers · As of September 28, 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 J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2556771555. Listed at 13 retailers as of October 26, 2026, with a 31% 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
J
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 2556771555
Dimensions8.59 × 8.65 × 5.38 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Top View
8.59 mm8.65 mm2.50 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2556771555
Side View
Table 57.0%Crown 36.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.4%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $19,314 USD|Low: $14,553 USD|High: $26,077 USD|Avg: $17,999 USD|+4.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
October 30, 2026
Retailer 2$15,107 USD
Retailer 12$15,167 USD
Retailer 4$15,470 USD
Retailer 7$15,479 USD
Retailer 10$16,008 USD
Retailer 3$17,199 USD
Retailer 6$17,622 USD
Retailer 14$18,410 USD
Retailer 15$18,410 USD
Retailer 9$18,418 USD
Retailer 16$19,020 USD
Retailer 8$19,184 USD
Retailer 1$19,314 USD
Retailer 5$19,448 USD
Retailer 13$19,792 USD
Retailer 11$26,077 USD

41 data points across 16 retailers

13 retailers$15,107 USD to $19,792 USD

B+
Cheapest Retailer
-
$15,107 USD
B+
Retailer 2
-
$15,470 USD
CA$21,486 CAD
View
B+
Retailer 3
-
$15,479 USD
View
B+
Retailer 4
-
$16,008 USD
View
Final sale: no returns
B
Retailer 5
-
$17,199 USD
View
Retailer 6
-
$17,873 USD
View
Price last confirmed 31 days ago
B
Retailer 7
-
$18,418 USD
£14,502 GBP
View
Retailer 8
-
$18,561 USD
View
Price last confirmed 32 days ago
B
Retailer 9
-
$19,184 USD
View
B
Retailer 10
-
$19,314 USD
€18,394 EUR
View
B
Retailer 11
-
$19,448 USD
View
B
Retailer 12
-
$19,792 USD
View
Most Expensive
NZ Jewellers
afae2bce-18e8-4498-9f36-c5b35f3e6e57 · Sep 28
$23,373 USD
View
Price last confirmed 32 days ago
12 more retailers have this diamond
Prices start from $15,107 USDSave up to $4,685 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.

B+
2.50ct Round
$15,107 USD