Round|Natural|GIA

2.57ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 2537883539

Certificate GIA 2537883539

Diamond specifications and retailer prices

From £16,992 GBP
$22,767 USD
As of October 31, 2026
Save £12,228 GBP (42%) vs most expensive(unlock to see where)
28 retailers carry this diamond
Most expensive: £29,220 GBP 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 £16,992 to £29,220, a £12,228 spread on the same certified stone. MOH London lists it at £29,220. 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: £29,220 GBP|Low: £16,992 GBP|High: £29,573 GBP|Avg: £21,199 GBP|-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 1, 2026
Retailer 8£16,992 GBP
Retailer 9£17,929 GBP
Retailer 3£18,218 GBP
Retailer 11£18,710 GBP
Retailer 2£18,717 GBP
Retailer 10£18,860 GBP
Retailer 6£19,154 GBP
Retailer 4£22,601 GBP
Retailer 7£24,805 GBP
Retailer 5£25,871 GBP
MOH London£29,220 GBP

31 data points across 11 retailers

28 retailers£16,992 GBP to £29,220 GBP

B+
Cheapest Retailer
-
£16,992 GBP
$22,767 USD
B+
Retailer 2
-
£17,035 GBP
$22,825 USD
View
B+
Retailer 3
-
£17,929 GBP
$24,023 USD
View
Final sale: no returns
B+
Retailer 4
-
£18,218 GBP
$24,410 USD
View
B+
Retailer 5
-
£18,710 GBP
$25,069 USD
View
Retailer 6
-
£18,710 GBP
$25,069 USD
View
Price last confirmed 25 days ago
B+
Retailer 7
-
£18,717 GBP
View
Retailer 8
-
£18,860 GBP
A$38,877 AUD
View
Price last confirmed 28 days ago
B
Retailer 9
-
£19,154 GBP
$25,664 USD
View
Retailer 10
-
£19,154 GBP
$25,664 USD
View
Price last confirmed 25 days ago
B
Retailer 11
-
£19,188 GBP
$25,710 USD
View
B
Retailer 12
-
£19,188 GBP
$25,710 USD
View
Retailer 13
-
£19,645 GBP
$26,322 USD
View
Price last confirmed 33 days ago
B+
Retailer 14
-
£19,823 GBP
$26,560 USD
View
B+
Retailer 15
-
£19,998 GBP
$26,796 USD
View
Retailer 16
-
£20,269 GBP
$27,158 USD
View
Price last confirmed 25 days ago
Retailer 17
-
£20,269 GBP
$27,158 USD
View
Price last confirmed 40 days ago
B
Retailer 18
-
£20,803 GBP
$27,874 USD
View
Retailer 19
-
£21,048 GBP
$28,202 USD
View
Price last confirmed 34 days ago
Retailer 20
-
£21,048 GBP
$28,202 USD
View
Price last confirmed 41 days ago
B
Retailer 21
-
£21,048 GBP
$28,202 USD
View
B
Retailer 22
-
£22,601 GBP
€28,841 EUR
View
B
Retailer 23
-
£24,805 GBP
View
B
Retailer 24
-
£25,871 GBP
ZAR 560,007 ZAR
View
B
Retailer 25
-
£26,505 GBP
$35,514 USD
View
Retailer 26
-
£26,505 GBP
$35,514 USD
View
Price last confirmed 43 days ago
Retailer 27
-
£26,505 GBP
$35,514 USD
View
Price last confirmed 36 days ago
Most Expensive
B
MOH London
16EC813E8 · Nov 1
£29,220 GBP
View
27 more retailers have this diamond
Prices start from £16,992 GBPSave up to £12,228 GBP

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
£16,992 GBP