Round|Natural|GIA

2.50ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 2556687185

Certificate GIA 2556687185

Diamond specifications and retailer prices

From $15,621 AUD
$10,973 USD
As of October 30, 2026
Save $7,927 AUD (34%) vs most expensive(unlock to see where)
28 retailers carry this diamond
Most expensive: $29,007 AUD at NZ Jewellers · As of October 9, 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 2556687185. Listed at 28 retailers as of October 30, 2026, with a 51% 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
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 2556687185
Dimensions8.63 × 8.68 × 5.40 mm
L/W Ratio1.01
Culet sizeNone
Top View
8.63 mm8.68 mm2.50 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2556687185
Side View
Table 57.0%Crown 34.5°Girdle: THN-STKPavilion 41.4°Culet: NoneDepth 62.4%

Caratlytics Score

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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: Oct 30
Current: $29,007 AUD|Low: $13,901 AUD|High: $29,007 AUD|Avg: $18,689 AUD
NZ Jewellers
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
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Retailer 22
Retailer 23
Retailer 24
Retailer 25
Retailer 26
Retailer 27
Retailer 28
Retailer 29
October 30, 2026
Retailer 22$15,116 AUD
Retailer 16$15,297 AUD
Retailer 11$15,621 AUD
Retailer 5$15,883 AUD
Retailer 29$16,148 AUD
Retailer 21$16,263 AUD
Retailer 14$16,640 AUD
Retailer 2$16,655 AUD
Retailer 26$16,677 AUD
Retailer 23$16,682 AUD
Retailer 4$16,775 AUD
Retailer 9$17,404 AUD
Retailer 25$18,433 AUD
Retailer 17$18,575 AUD
Retailer 28$18,767 AUD
Retailer 19$18,854 AUD
Retailer 7$19,170 AUD
Retailer 15$19,283 AUD
Retailer 12$19,368 AUD
Retailer 18$19,512 AUD
Retailer 20$19,580 AUD
Retailer 6$20,073 AUD
Retailer 13$20,073 AUD
Retailer 3$20,742 AUD
Retailer 10$21,255 AUD
Retailer 27$21,749 AUD
Retailer 24$23,548 AUD
Retailer 8$27,436 AUD
NZ Jewellers$29,007 AUD

33 data points across 29 retailers

28 retailers$15,621 AUD to $23,548 AUD

Retailer 1
-
$15,297 AUD
$10,745 USD
Price last confirmed 23 days ago
A
Retailer 2
-
$15,621 AUD
$10,973 USD
View
A
Retailer 3
-
$15,883 AUD
$11,157 USD
View
A
Retailer 4
-
$16,148 AUD
$11,343 USD
View
Retailer 5
-
$16,640 AUD
$11,689 USD
View
Price last confirmed 23 days ago
A
Retailer 6
-
$16,655 AUD
₹1,114,204 INR
View
A
Retailer 7
-
$16,677 AUD
$11,715 USD
View
Final sale: no returns
A
Retailer 8
-
$16,682 AUD
$11,718 USD
View
A
Retailer 9
-
$16,775 AUD
CA$16,366 CAD
View
Retailer 10
-
$17,404 AUD
$12,225 USD
View
Price last confirmed 22 days ago
A
Retailer 11
-
$18,433 AUD
£10,195 GBP
View
B+
Retailer 12
-
$18,575 AUD
$13,048 USD
View
B+
Retailer 13
-
$18,767 AUD
$13,183 USD
View
Retailer 14
-
$18,854 AUD
$13,244 USD
View
Price last confirmed 23 days ago
B+
Retailer 15
-
$19,170 AUD
$13,466 USD
View
B+
Retailer 16
-
$19,283 AUD
$13,545 USD
View
B+
Retailer 17
-
$19,368 AUD
$13,605 USD
View
Retailer 18
-
$19,512 AUD
$13,706 USD
View
Price last confirmed 22 days ago
Retailer 19
-
$19,580 AUD
$13,754 USD
View
Price last confirmed 21 days ago
B+
Retailer 20
-
$19,683 AUD
$13,826 USD
View
B+
Retailer 21
-
$20,073 AUD
$14,100 USD
View
B+
Retailer 22
-
$20,073 AUD
$14,100 USD
View
B+
Retailer 23
-
$20,742 AUD
$14,570 USD
View
B+
Retailer 24
-
$21,255 AUD
$14,931 USD
View
B+
Retailer 25
-
$21,749 AUD
€14,550 EUR
View
B+
Retailer 26
-
$23,548 AUD
£13,025 GBP
View
Retailer 27
-
$27,436 AUD
£15,175 GBP
View
Price last confirmed 22 days ago
Most Expensive
NZ Jewellers
2cc54c46-9023-42d3-9e70-8a74e9fb4ff3 · Oct 9
$29,007 AUD
$20,376 USD
View
Price last confirmed 21 days ago
27 more retailers have this diamond
Prices start from $15,621 AUDSave up to $7,927 AUD

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
$15,621 AUD