Round|Natural|GIA

2.57ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 2537883539

Certificate GIA 2537883539

Diamond specifications and retailer prices

From $32,411 AUD
$22,767 USD
As of October 31, 2026
Save $23,325 AUD (42%) vs most expensive(unlock to see where)
28 retailers carry this diamond
Most expensive: $55,736 AUD at MOH London · As of November 1, 2026
View at MOH London

About this 2.57ct natural round diamond

This 2.57ct natural round sits in the two to three carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2537883539. Listed at 28 retailers as of October 31, 2026, with prices from $32,411 to $55,736, a $23,325 spread on the same certified stone. MOH London lists it at $55,736. 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

2.57
Carat
H
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 2537883539
Dimensions8.68 × 8.72 × 5.42 mm
L/W Ratio1.00
Top View
8.68 mm8.72 mm2.57 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2537883539
Side View
Table 59.0%Crown 36°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.3%

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 31
Current: $55,736 AUD|Low: $32,411 AUD|High: $56,409 AUD|Avg: $40,424 AUD|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 8$32,411 AUD
Retailer 9$34,199 AUD
Retailer 3$34,750 AUD
Retailer 11$35,688 AUD
Retailer 10$35,974 AUD
Retailer 2$36,002 AUD
Retailer 6$36,535 AUD
Retailer 4$43,111 AUD
Retailer 7$47,315 AUD
Retailer 5$49,348 AUD
MOH London$55,736 AUD

32 data points across 11 retailers

28 retailers$32,411 AUD to $55,736 AUD

B+
Cheapest Retailer
-
$32,411 AUD
$22,767 USD
B+
Retailer 2
-
$32,494 AUD
$22,825 USD
View
B+
Retailer 3
-
$34,199 AUD
$24,023 USD
View
Final sale: no returns
B+
Retailer 4
-
$34,750 AUD
$24,410 USD
View
B+
Retailer 5
-
$35,688 AUD
$25,069 USD
View
Retailer 6
-
$35,688 AUD
$25,069 USD
View
Price last confirmed 25 days ago
Retailer 7
-
$35,974 AUD
View
Price last confirmed 29 days ago
B+
Retailer 8
-
$36,002 AUD
£19,913 GBP
View
B
Retailer 9
-
$36,535 AUD
$25,664 USD
View
Retailer 10
-
$36,535 AUD
$25,664 USD
View
Price last confirmed 25 days ago
B
Retailer 11
-
$36,601 AUD
$25,710 USD
View
B
Retailer 12
-
$36,601 AUD
$25,710 USD
View
Retailer 13
-
$37,472 AUD
$26,322 USD
View
Price last confirmed 33 days ago
B+
Retailer 14
-
$37,811 AUD
$26,560 USD
View
B+
Retailer 15
-
$38,146 AUD
$26,796 USD
View
Retailer 16
-
$38,662 AUD
$27,158 USD
View
Price last confirmed 25 days ago
Retailer 17
-
$38,662 AUD
$27,158 USD
View
Price last confirmed 40 days ago
B
Retailer 18
-
$39,681 AUD
$27,874 USD
View
Retailer 19
-
$40,148 AUD
$28,202 USD
View
Price last confirmed 34 days ago
Retailer 20
-
$40,148 AUD
$28,202 USD
View
Price last confirmed 41 days ago
B
Retailer 21
-
$40,148 AUD
$28,202 USD
View
B
Retailer 22
-
$43,111 AUD
€28,841 EUR
View
B
Retailer 23
-
$47,315 AUD
£26,170 GBP
View
B
Retailer 24
-
$49,348 AUD
ZAR 560,007 ZAR
View
B
Retailer 25
-
$50,558 AUD
$35,514 USD
View
Retailer 26
-
$50,558 AUD
$35,514 USD
View
Price last confirmed 43 days ago
Retailer 27
-
$50,558 AUD
$35,514 USD
View
Price last confirmed 36 days ago
Most Expensive
B
MOH London
16EC813E8 · Nov 1
$55,736 AUD
£30,828 GBP
View
27 more retailers have this diamond
Prices start from $32,411 AUDSave up to $23,325 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.

B+
2.57ct Round
$32,411 AUD