Round|Natural|GIA

2.57ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 2537883539

Certificate GIA 2537883539

Diamond specifications and retailer prices

From $40,464 NZD
$22,767 USD
As of November 2, 2026
Save $29,120 NZD (42%) vs most expensive(unlock to see where)
28 retailers carry this diamond
Most expensive: $69,584 NZD 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 November 1, 2026, with prices from $40,464 to $69,584, a $29,120 spread on the same certified stone. MOH London lists it at $69,584. 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: Nov 2
Current: $69,584 NZD|Low: $40,464 NZD|High: $70,424 NZD|Avg: $50,468 NZD|-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$40,464 NZD
Retailer 9$42,696 NZD
Retailer 3$43,384 NZD
Retailer 11$44,555 NZD
Retailer 10$44,912 NZD
Retailer 2$44,947 NZD
Retailer 6$45,613 NZD
Retailer 4$53,822 NZD
Retailer 7$59,070 NZD
Retailer 5$61,609 NZD
MOH London$69,584 NZD

32 data points across 11 retailers

28 retailers$40,464 NZD to $69,584 NZD

B+
Cheapest Retailer
-
$40,464 NZD
$22,767 USD
B+
Retailer 2
-
$40,567 NZD
$22,825 USD
View
B+
Retailer 3
-
$42,696 NZD
$24,023 USD
View
Final sale: no returns
B+
Retailer 4
-
$43,384 NZD
$24,410 USD
View
B+
Retailer 5
-
$44,555 NZD
$25,069 USD
View
Retailer 6
-
$44,555 NZD
$25,069 USD
View
Price last confirmed 25 days ago
Retailer 7
-
$44,912 NZD
A$38,877 AUD
View
Price last confirmed 29 days ago
B+
Retailer 8
-
$44,947 NZD
£19,913 GBP
View
B
Retailer 9
-
$45,613 NZD
$25,664 USD
View
Retailer 10
-
$45,613 NZD
$25,664 USD
View
Price last confirmed 26 days ago
B
Retailer 11
-
$45,694 NZD
$25,710 USD
View
B
Retailer 12
-
$45,694 NZD
$25,710 USD
View
Retailer 13
-
$46,782 NZD
$26,322 USD
View
Price last confirmed 33 days ago
B+
Retailer 14
-
$47,205 NZD
$26,560 USD
View
B+
Retailer 15
-
$47,624 NZD
$26,796 USD
View
Retailer 16
-
$48,268 NZD
$27,158 USD
View
Price last confirmed 25 days ago
Retailer 17
-
$48,268 NZD
$27,158 USD
View
Price last confirmed 41 days ago
B
Retailer 18
-
$49,540 NZD
$27,874 USD
View
Retailer 19
-
$50,123 NZD
$28,202 USD
View
Price last confirmed 34 days ago
Retailer 20
-
$50,123 NZD
$28,202 USD
View
Price last confirmed 41 days ago
B
Retailer 21
-
$50,123 NZD
$28,202 USD
View
B
Retailer 22
-
$53,822 NZD
€28,841 EUR
View
B
Retailer 23
-
$59,070 NZD
£26,170 GBP
View
B
Retailer 24
-
$61,609 NZD
ZAR 560,007 ZAR
View
B
Retailer 25
-
$63,119 NZD
$35,514 USD
View
Retailer 26
-
$63,119 NZD
$35,514 USD
View
Price last confirmed 43 days ago
Retailer 27
-
$63,119 NZD
$35,514 USD
View
Price last confirmed 36 days ago
Most Expensive
B
MOH London
16EC813E8 · Nov 1
$69,584 NZD
£30,828 GBP
View
27 more retailers have this diamond
Prices start from $40,464 NZDSave up to $29,120 NZD

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
$40,464 NZD