CaratHunter
Plans
Round|Natural|IGI

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 $15,557 SGD
$12,169 USD
As of October 30, 2026
Save $9,762 SGD (39%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $25,319 SGD 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 $15,557 to $25,319, a $9,762 spread on the same certified stone. NZ Jewellers lists it at $25,319. 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
Colour
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: $16,556 SGD|Low: $13,974 SGD|High: $23,691 SGD|Avg: $17,915 SGD|-0.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 31, 2026
Retailer 3$15,361 SGD
Retailer 2$15,557 SGD
Retailer 7$16,069 SGD
Retailer 1$16,556 SGD
Retailer 9$16,769 SGD
Retailer 8$17,886 SGD
Retailer 11$18,166 SGD
Retailer 10$18,864 SGD
Retailer 4$19,143 SGD
Retailer 6$20,894 SGD
Retailer 5$23,534 SGD

41 data points across 11 retailers

13 retailers$15,557 SGD to $25,319 SGD

A
Cheapest Retailer
-
$15,557 SGD
$12,169 USD
B+
Retailer 2
-
$16,069 SGD
$12,570 USD
View
Final sale: no returns
B+
Retailer 3
-
$16,485 SGD
$12,895 USD
View
A
Retailer 4
-
$16,556 SGD
£10,197 GBP
View
B+
Retailer 5
-
$16,769 SGD
$13,117 USD
View
B+
Retailer 6
-
$17,886 SGD
$13,991 USD
View
B+
Retailer 7
-
$18,166 SGD
$14,210 USD
View
B+
Retailer 8
-
$18,614 SGD
$14,560 USD
View
B+
Retailer 9
-
$18,864 SGD
$14,756 USD
View
B+
Retailer 10
-
$19,143 SGD
€14,261 EUR
View
B+
Retailer 11
-
$20,894 SGD
ZAR 264,035 ZAR
View
B
Retailer 12
-
$23,534 SGD
£14,495 GBP
View
Most Expensive
B
NZ Jewellers
d4324a38-5c97-4e14-9532-3d9ceabba2dd · Oct 30
$25,319 SGD
$19,805 USD
View
12 more retailers have this diamond
Prices start from $15,557 SGDSave up to $9,762 SGD

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
$15,557 SGD