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2.50ct J SI1 Round Natural Diamond

EX • J/SI1 • IGI 670478879

Shape and cutting style on the report: Round brilliant

Certificate IGI 670478879

Diamond specifications and retailer prices

From $12,169 USD
As of October 30, 2026
Save $7,636 USD (39%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $19,805 USD at NZ Jewellers · As of October 30, 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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI 670478879. Listed at 13 retailers as of October 30, 2026, with prices from $12,169 to $19,805, a $7,636 spread on the same certified stone. NZ Jewellers lists it at $19,805. 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
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.1°
Pavilion angle41.5°
OriginNatural
Grading LabIGI
CertificateIGI 670478879
Dimensions8.64 × 8.72 × 5.34 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
8.64 mm8.72 mm2.50 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 670478879
Side View
Table 60.0%Crown 34.1°Girdle: MED-STKPavilion 41.5°Culet: NoneDepth 61.5%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $12,950 USD|Low: $10,931 USD|High: $18,532 USD|Avg: $13,933 USD|-0.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 30, 2026
Retailer 7$12,016 USD
Retailer 6$12,169 USD
Retailer 5$12,570 USD
Retailer 8$12,895 USD
Retailer 1$12,950 USD
Retailer 9$14,560 USD
Retailer 3$14,950 USD
Retailer 4$16,344 USD
Retailer 2$18,409 USD

41 data points across 9 retailers

13 retailers$12,169 USD to $19,805 USD

A
Cheapest Retailer
-
$12,169 USD
B+
Retailer 2
-
$12,570 USD
View
Final sale: no returns
B+
Retailer 3
-
$12,895 USD
View
A
Retailer 4
-
$12,950 USD
£10,197 GBP
View
B+
Retailer 5
-
$13,117 USD
View
B+
Retailer 6
-
$13,991 USD
View
B+
Retailer 7
-
$14,210 USD
View
B+
Retailer 8
-
$14,560 USD
View
B+
Retailer 9
-
$14,756 USD
View
B+
Retailer 10
-
$14,950 USD
€14,238 EUR
View
B+
Retailer 11
-
$16,344 USD
ZAR 264,035 ZAR
View
B
Retailer 12
-
$18,409 USD
£14,495 GBP
View
Most Expensive
B
NZ Jewellers
d4324a38-5c97-4e14-9532-3d9ceabba2dd · Oct 30
$19,805 USD
View
12 more retailers have this diamond
Prices start from $12,169 USDSave up to $7,636 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
$12,169 USD